With my 70hp my boat will top out at 30mph and now i put the throttle down and it goes 9mph wide open. I can get it to 2.8 to 3.5 mph trolling speed and it runs a little rough while trolling and if i go any slower it will stall and while trolling i have to hit the choke every 15min or it will sta...Turn off the main electrical cutoff switch. Remove the snaps on the outboard motor upper case and take off the cowl cover. Take the spark plug wire boot off the plug tip. Move this wire around from the opening by taping it to another part or wedging it between components. With your socket wrench, remove the plug.After playing with the throttle by feeding it slowly after time, the motor started to run fine. Fished a little then started the motor back up. Started and idled fine. Let it run a while easily feeding the throttle and after maybe 20 minutes or so I could get some speed out of it. Never went full throttle though.5. Apr 16, 2001. #1. We have a 98 25hp Evinrude that has an annoying habit of intermittently bogging down or losing power when we run at full throttle. One of the problems is that it is completely unpredictable as to when it is going to happen. When it happens we stop the motor take it out of the water for a minute or so, start it back up and ...I'm still receiving my education in outboard motor troubleshooting, maintenance, and repair. issue: outboard motor (75hp mercury tracker -- 3 cylinder, 2 cycle) cranks, run well for several minutes at full throttle, then dies (or sometimes idles if I pull back the throttle when I hear the engine losing power).I prime the bulb, the motor cranks …3. Sep 29, 2014. #1. Hello all, I have a 2003 Yamaha 50TLRB outboard that has never run correctly from the day we got it last year. It has always had dying, rough idle, low rpm issues and dying when accelerating/ taking throttle. The problems seem to be worse at times then slightly better others. All classic dirty carb symptoms.Messages. 4,087. Mar 27, 2012. #2. Re: Mercury (Classic) 40 hp loses power on full throttle. Typically when a motor starts, idles, and runs well at full throttle for a bit, and then performance dies down it is a failing ignition component. And LOL at "classic". There are some guys on here with motors from the 30's and 40's!!Hi GuysI have a problem with this outboard - it won't take full throttle. It runs fine i low rpm and in idle as you can see in the video.I have done this:cle...If your fuel pump is whining or squealing, it is typically one of two reasons. First, the pump might be starving for fuel. Fuel lubricates fuel pumps; if your fuel filter is blocked or clogged, it may be prohibiting gas from getting to the fuel pump. In this case, the problem is likely a blocked fuel filter, not necessarily a bad pump.Messages. 4,087. Mar 27, 2012. #2. Re: Mercury (Classic) 40 hp loses power on full throttle. Typically when a motor starts, idles, and runs well at full throttle for a bit, and then performance dies down it is a failing ignition component. And LOL at "classic". There are some guys on here with motors from the 30's and 40's!!4,292. May 12, 2008. #3. Re: Boat won't go over 4,000 RPM's. Check your prop. See what the factory recommended size and pitch are and compare it to the one on your boat. Since yours is a ski/wakeboard boat, the previous owner may have increased the pitch for more holeshot, which would decrease top end speed.Boat runs fine at slow speed, but wont speed up .... the motor still runs fine though ... doesnt rev, doesnt sputter, - Answered by a verified Marine Mechanic. ... HI, have a 1999 johnson 60hp motor. starts fine, runs fine full throttle until i slow down, then it won't go above 2400 rpms, tilt motor up out of water, rpms jump to 4800, tilt back down into water, ...Boat runs and moves slowly but won't accelerate? - posted in General Sport Boat Discussion: 1996 Sea-doo Challenger runs and moves slowly (walking speed) but will not accelerate. The RPMs increase with throttle increase but the boat does not go any faster. Any thoughts or common problems that would cause this? Thanks for your help!Nov 23, 2003. #1. 1985 3.0 liter mercruiser. The boat starts right up every time when cold. When I first leave the dock the boat runs smooth at idle speed. When I give the boat more throttle it will get up and go to wide open throttle. If I throttle down at all, the boat will start surging and running very rough.Save G · #3 · May 18, 2009 Yep. Sound like you have a spun prop. Not too costly. Depends now your prop is made. Might can just change out the inner hub. There is an inner hub made of rubber that seperates the inner spline collar from the rest of the prop. This works like a sheer pin and also helps dampen vibration comming off the prop.Remove lower unit.----Inspect waterpump.-----Look UP INTO EXHAUST housing and look for blockage in exhaust . Write your reply... i have a 2003 50hp mercury two stroke. motor runs great after leaving boat ramp, once i slow down to do some scouting for ducks i try get back on plane and motor has very little power. does not stall out. i have …A beeping sound could be coming from a boat for several different reasons, but the most common is because of a fuel restriction brought on from a clogged filter. A clogged filter will slow the flow of gas from feeding into the motor quickly enough. You might notice that while you are holding the throttle down, this is when you hear the beeping ...Oct 6, 2009 · 2,184. Oct 6, 2009. #11. Re: Motor shakes at full throttle. You need to run a straight edge from the anti ventilation plate on the engine to the transom of the boat. It should contact the boat at or 1 inch above the keel. As to a bent shaft, they will vibrate at all speeds. Don't ask how I know this. Spark Finally, inspect the spark plugs to make sure the gaps are correct and that they’re free of buildup. Check the plug wires to make sure they’re firmly attached to the spark plugs. How to Test Spark Plugs on an Outboard | Outboard Ignition System PT 2 | Boats.net Watch on Propulsion SystemJun 19, 2012. #1. I am having a problem with my 2002 Mercury 40 HP. I came out of a no wake zone, pressed down the throttle, boat took off as always, planed out....after about 30 seconds it shut down to about half power. Almost like I was pulling something really heavy behind me is the best way I can describe it.Neglecting maintenance can cause the engine to fail prematurely and lead to costly repairs. There are several things that you can do that may cause significant damage to your boat engine. Dry starts, excessive warm-up, slow shifting, slow planning, improper trim, aggressive driving in rough seas, and neglecting maintenance are just a few of the ...Prevention: Always abide by the “Rule of Thirds.” Plan to use one-third of your fuel supply to go out for the day; one third to get back; and have one-third in reserve in …347. May 2, 2006. #4. Re: Losing power at full throttle. I'd also go with fuel pump diaphrams and non-return valves in the pumps<br /><br />Verify this by pumping you hand primer bulb while at full throttle. If it picks up while you're pumping by hand, it's the diaphram pumps that are shot. B.Outboard manufacturers have recommended RPM ranges for their specific models. Top boat manufacturers prop their outboards with size and pitch that allows the boat to run inside the recommended limits. 7 Tips for Peak Performance. Today’s outboards are a big step forward from the units the major outboard makers produced just 10 years ago.Increase to about 3900 RPM's and all good and smooth for a mile or so. OK let's go for it. Throttle up to 4500 and very smooth and responsive, then up to 5000 and motor running well , no hesitation, no surge. 20 minutes later we are at shrimp area. We drop pots, pull pots and repeat process to many times.If you have a separate portable fuel tank, try connecting that and see if the motor will run. Use fresh gasoline if you can. 5. Carburetor. If none of this has gotten your motor to start, it’s time to consider a problem with the engine. Since you know that it’s a fuel problem, the carburetor is the number one culprit.Messages. 3. Mar 16, 2011. #1. I have a 2002 Mercury Outboard 115 EFI 4-stroke that sputters and stalls when I bring the throttle from high to low/idle rpms. To avoid it, I have to bring down the speed really slow. Or sometime when I'm at low idle speeds it will sputter and stall. New plugs, thermostat, and fuel/water seperator filter.1999 200 efi mercury outboard motor starts and runs great except at full throttle it will die after couple minutes but then restart right away go to full throttle and repete. changed … Mercury Tracker 40 hp 2 stroke 4 cylinder Changed out water pump now I have no reverse or neutral and it starts up in gear.23-Jun-2012 ... Cruising speed is often the engine rpm that provides good fuel economy and and a boat attitude that provides a comfortable and efficient ride.Disconnect the fuel line from the engine side of the bulb. With the arrow pointing to the side where you pulled the hose off. Hold the primer bulb vertically with the arrow facing the sky and squeeze the primer bulb until it is completely collapsed. Then, stick your finger on the hose barb. Let go of the primer bulb.Engine Malfunction. This should be the first thing to check if you’re having RPM troubles. There are a few signs that your engine isn’t working as it should: Overheating. Engine timing out. Ignition not starting properly or bogging. Burnt out spark plugs and coils. Defective power pack or connections.This abnormal movement may indicate a bent, broken or altered propeller. Turn the motor off, pull the motor out of the water and visually inspect the propeller for damage. Suzuki outboards are produced by Suzuki Marine. They can range from 2.5 horsepower to 300 horsepower. Outboard motors are attached externally to the stern.The WOT test is done in three simple steps: 1. Find out your outboard or sterndrive's WOT rating. 2. Run your boat at WOT. 3. Replace the propeller with a higher or lower pitch prop. To get the most accurate result from the WOT RPM test, there are a few things you need to do to ensure the data from the wide open throttle test is as precise as ... An engine that requires the choking ( partial or full ) after initial engine warm up is an indication that the engine fuel air mixture system is out of adjustment. ... While there are a number of reasons why an engine may suddenly develop a "runs only while the fuel is manually enriched situation", the three most common reasons would be: 1) An air leak …This is one of the causes of engine stalling since the amount of fuel getting to the engine is only sufficient to run the engine on idle but cannot sustain a full throttle. Solution: Inspect the fuel filter for any obstruction. First, remove the filter and blow through it. In case of any blockage, you can clean out the filter or replace it with ...#1 Two new issues have developed with my 2003 Sportster LE (carb) boat. It did not run much in the last year. Just finished a driveline rebuild on it. It has new gas, and is pre-mixed, the oil pump was removed a few years ago. I cleaned and reinstalled the raves. Spark plugs look okay, maybe a little oily but the engine starts up very easy.Jun 11, 2012 · Run the boat at cruising speed, the do the slow down and go to full throttle, if it bogs down go back to idle, squeeze the primer bulb and make sure the carb is full of fuel. Now try the full throttle again. If it now goes, rebuild the fuel pump and you may have to adjust the float height, but the fuel pump is most likely. I’m missing a third of the speed. When motor is trimmed full down its extremely slow and sluggish and then I start trimming it up so it will pick up speed. I used to be able to get 33 to 35 mph out of it easy no problem. Full throttle it took off like a bat out of hell. Now it’s like an 80 year person trying to run.Besides being out of fuel, it's the FIRST thing you want to check. If one plug feels cooler than the other after some run time, that's your culprit. #2 is a stuck/shot water pump impeller. #3 is a bad coil (s). Joel. E10 is causing a lot of problems hence the carb suggestions.Jun 24, 2021 · Faulty Impeller. Bad Spark Plugs. Malfunctioning Fuel Pump. 1. Tangled Propeller. If your outboard motor will not throttle up, the issue may be as simple as a tangle. Debris such as fishing line, excessive seaweed, beer can rings, or nearly any other material can wrap around the propeller and its spindle. ledwell. New member. May 24, 2014. #1. I have a 2007 Tahoe Q6 with a carburated Mercruiser 4.3L V6. I just put the boat in the water a couple of days ago for the first time this year. The problem I am having is it is running slow. The boat will normally top out around 53MPH (Checked with a GPS). Now it will only run aprox 40MPH.Causes of Slow Speed at Full Throttle. Engine-Related Issues; Hull and Propeller Problems; Improper Weight Distribution; Solutions and Fixes for Slow Speed …Starts to surge at 1/2 to full throttle. Acts like it is dropping a cylinder. Will still run great at 1/2 throttle or less. Will idle and troll no problem for hours. 1/2 to full throttle is like shutting off one cylinder then turning it back on and repeat the cycle... power, no power. This is an intermittent issue. Happens 85% of the time.Once the boat gets going and flats out from the tipping, and you knock it into full throttle it will still run fine. But every couple of seconds ...Spark Finally, inspect the spark plugs to make sure the gaps are correct and that they’re free of buildup. Check the plug wires to make sure they’re firmly attached to the spark plugs. How to Test Spark Plugs on an Outboard | Outboard Ignition System PT 2 | Boats.net Watch on Propulsion System 23-Jun-2012 ... Cruising speed is often the engine rpm that provides good fuel economy and and a boat attitude that provides a comfortable and efficient ride.Fuel System Issues. One of the most common ways your Yamaha outboard motor will break down is a fuel system failure. Whether you’re experiencing an intermittent bog down, poor performance, or complete engine failure, your fuel system is a common culprit. Ethanol gasoline: Only use premium low-ethanol gasoline for your Yamaha …Boat runs and moves slowly but won't accelerate? - posted in General Sport Boat Discussion: 1996 Sea-doo Challenger runs and moves slowly (walking speed) but will not accelerate. The RPMs increase with throttle increase but the boat does not go any faster. Any thoughts or common problems that would cause this? Thanks for your help!Jun 18, 2021 · Check out these 10 simple solutions for the most common engine breakdowns. Running out of gas. Boat engine is sputtering and losing power. Engine won’t start or turn over. Boat engine is overheating. Boat motor stopped suddenly. Vibration from the engine prop. Engine won’t shift into gear. Trim is stuck on the engine. Nov 23, 2017 Before getting too deep into troubleshooting, make sure that the throttle control at the helm advances the throttle lever on the engine from stop to stop. Wide open throttle (WOT) seems to strike fear into the heart of many boat owners.If you have low power or are not getting your RPM, AND you are 100% sure the exhaust color is NOT DARK, then most likely you are not getting enough fuel – this can be from clogged fuel filters, clogged fuel lines and pick-ups, suction air leaks in the fuel supply, out of adjustment throttle linkage, the run solenoid not pulling up the fuel ...It is also possible to have problems with the body or other major parts of the pontoon. 1. Hull Issues. The hull of a pontoon can become worn down over time, get cracks, or fractures. If your pontoon boat has had a collision or has experienced a lot of wear, you could start to see issues with the hull.1999 200 efi mercury outboard motor starts and runs great except at full throttle it will die after couple minutes but then restart right away go to full throttle and repete. changed … Mercury Tracker 40 hp 2 stroke 4 cylinder Changed out water pump now I have no reverse or neutral and it starts up in gear.11-Jul-2018 ... Full rpm's at partial throttle and then it bogs down at full? Are you getting your normal top speed when it's getting high rpm's? If yes it's ...Apr 6, 2016. #1. So last week, after running all day without any issues, my motor decides it will only run at full throttle. It was slow to start, but if I choked it and floored the throttle it would fire up and run just fine at higher rpm's. It may keep running at 3/4 throttle, but as soon as I back off closer to 1/2 it dies.With my 70hp my boat will top out at 30mph and now i put the throttle down and it goes 9mph wide open. I can get it to 2.8 to 3.5 mph trolling speed and it runs a little rough while trolling and if i go any slower it will stall and while trolling i have to hit the choke every 15min or it will sta...Trader Rating: 2 (100% +) Motor cuts out at full throttle. Just installed a Dynamite fuze Brushless ESC and an Orion stock brushless 17.5T motor. The motor is used but the ESC is new. Problem I have is that at full throttle the motor cuts out. If you pull back slow you can get to full throttle but if you pull back to fast the motor cuts out ...The manufacture WOT RPM rating serves as a benchmark of a healthy engine and if your vessel does not hit that number, it can be a sign of a number of potential issues. One of the most common reasons your boat may not achieve the RPM rating at WOT is the propeller. If your prop is not the correct size, pitch, or even number of blades, you may ...Feb 28, 2011 · 2. Feb 28, 2011. #1. I have a 2001, 70 hp, 2 stroke VRO outboard. While running 30kts for approx 20 min the engine loses power and will not push the boat more than 18 kts after this happens. The engine appears to be shaking a bit more but will stay running and re starts easily. I pulled the plugs and they were wet with oil. 5. Apr 16, 2001. #1. We have a 98 25hp Evinrude that has an annoying habit of intermittently bogging down or losing power when we run at full throttle. One of the problems is that it is completely unpredictable as to when it is going to happen. When it happens we stop the motor take it out of the water for a minute or so, start it back up and ...Boat runs and moves slowly but won't accelerate? - posted in General Sport Boat Discussion: 1996 Sea-doo Challenger runs and moves slowly (walking speed) but will not accelerate. The RPMs increase with throttle increase but the boat does not go any faster. Any thoughts or common problems that would cause this? Thanks for your help!The common causes of 2 stroke bogging at full throttle include using the wrong gas mix, dirty or clogged air filters, damaged spark plugs or barrel gaskets, and damaged intake manifold gaskets. Easy …1988 Mercruiser 4.4 alpha one I changed out the throttle and shift cables to mu control box... we took the boat out ran perfectly for about an hour opened it up to about 35 mph was running real good a ... my 1985 125hp force will not run well at full throttle. it will throttle up for a sort period then begin to stutter and i have to throttle back to …Here are a few ways to do it: Shift cargo or crew towards the side that is lifted. This way, you will redistribute the weight, compensating for the lean caused by wind. Adjust the angling of the trim tabs. As …Insert a 0.015 feeler gauge between the pump arm and the adjustment screw bottom. The pump arm should move down a bit when the feeler gauge blade is inserted. The proper adjustment prevents the diaphragm from getting stretched to its maximum limit at wide open throttle.Feb 4, 2022 · We hope this read offers you valuable insights into why an outboard motor may not be running at full power. The common culprits discussed below include: -A spun propeller -Boat propeller entangled with debris -Fuel line air leak -Corroded spark plug wiring Additionally, apart from the question of your engine operating at full power, we discuss what might be causing acceleration hesitation. Troubleshooting Tips. Please refer to your owner’s manual for details on all maintenance procedures and troubleshooting for your specific model. Find an owner’s manual here. Basic troubleshooting information for Honda small engines.I have a 2006 Mercury optimax 150 when you crank it it runs good then when you take off it will go up to full throttle then it will slow down to about 3000 rpm then if you slack of on the throttle and then go back to full throttle it will pick up speed and then drop back of and then at times it will stay running full throttle at times it will surf back …Insert a 0.015 feeler gauge between the pump arm and the adjustment screw bottom. The pump arm should move down a bit when the feeler gauge blade is inserted. The proper adjustment prevents the diaphragm from getting stretched to its maximum limit at wide open throttle.One possible reason why boats no longer achieve appropriate speeds at full throttle is a spun prop. This occurs when the bond between the propshaft and blades are broken, which subsequently causes the rubber insert to spin independently.Step 2: Remove the outer components to access the governor of your engine. Step 3: Measure the clearance between the choke arm and control lever. Adjust it to a prescribed value by loosening or tightening the throttle cable. Step 4: Adjust the governor arm by rotating its pin. Step 5: Reassemble everything and test the mower for performance.High idles are caused primarily by too much air entering the engine after the intake. This extra air leans out the air to fuel ratio but raises the idle anywhere from 100 to 500 RPM based on the amount of air. If you want to fix your boat’s high idle issue, then here are the steps you need to take and the direction you need to go!Aug 19, 2005 · 6,319. Aug 19, 2005. #5. Re: 40 HP will not run at full Throttle. One other thing: This is a used boat and used outboard. Check the fuel tank carefully for debris, and clean out or replace the fuel lines and bulb. <br /><br />Then, put a fuel filter in the fuel line between the tank and the bulb. 1999 200 efi mercury outboard motor starts and runs great except at full throttle it will die after couple minutes but then restart right away go to full throttle and repete. changed … Mercury Tracker 40 hp 2 stroke 4 cylinder Changed out water pump now I have no reverse or neutral and it starts up in gear.Your outboard may be stalling & running out of fuel due to three issues. Either the lift pump has failed, the boat is out of fuel or there is an air leak or blockage somewhere in the fuel lines running fuel from the tank to the engine. There are several methods to troubleshooting a stalling outboard engine. We explore the three big issues that ... Bad or damaged propellerMisfiring in cylinders. Fuel Pump May Turn Bad. Because of another component failure. Experiencing Operator Shifting Trouble. Lower unit turns bad. 1. Trouble In Getting The Outboard On A Plane: Some of the Yamaha VMAX SHO users has mentioned their struggle to get their outboard on a plane.Everything from fouled or corroded spark plug wires to debris in the gas can cause sputtering or loss of power. The first step is to identify what the cause of the problem is. The easiest way to do this is by eliminating the simplest explanation first and working your way outward until you locate the issue. The most obvious answer is fuel.Jul 4, 2010. #1. 2002 4 tec. Here is the problem. A few rides back it started doing this. I will give it throttle, and the boat revs but does not move very quick. If I feathered the throttle it would finally hook up and go. After i got it to hook up that one time, it would run fine the rest of the day. Then yesterday I was pulling a tube all ...No hidden fees. No cable box. No problems. Why is your outboard not reaching top speed?Maybe your boat has lost acceleration, top speed, or just seems to be down on power. In this video from...In the case of boats like this you want the propeller at the very bottom most part of the hull (at the bottom of the V in this case) so it can do 2 things: 1. Push the nose up out of the water which reduces reduce drag and 2. Reduce cavitation because that robs the propeller of forward thrust. In general high speed boat propellers will be sub ...Hi guys, I'm fairly new to outboard motors and Im having problems with my Mercury 200hp Black Max. It overheats running at idle and low speeds. Cools fine under power. I have replaced the impeller, housing etc. Checked the poppet valve (not blocked). The tattle stream is still weak. The motor has only 9hrs since a professional rebuild, however ...After around 10 minutes of operation, it shouldn’t run into the same issue again. Your main focus should be removing all the unit’s old fuel. Otherwise, the issue will persist, and you won’t be able to get the desired performance from your EFI unit. So, grab a maintenance kit and start fixing the machine. Acceleration ProblemsMay 1, 2006 · 347. May 2, 2006. #4. Re: Losing power at full throttle. I'd also go with fuel pump diaphrams and non-return valves in the pumps<br /><br />Verify this by pumping you hand primer bulb while at full throttle. If it picks up while you're pumping by hand, it's the diaphram pumps that are shot. B. Sea-Doo Won’t Accelerate. If your Sea-Doo doesn’t accelerate or reach its top speed it may be for the following reasons: – You are using the learning key. Solution: Use the regular key. – Your Sea-Doo is in ECO mode. Solution: Always select SPORT mode for the best acceleration. – Jet pump or the intake is clogged.There are several problems that can indicate that a car’s starter should be replaced including a clicking sound when trying to start the car, a slow starter speed and a grinding noise while the engine is running.A well designed and executed layout for the cooling system, and running the boat as designed (full throttle) will keep the temperature in check. Regards, Jan. ... When the boat runs slow(ish), the inlet is fully submerged and will pickup plenty of water, but when the speed goes up and the hull gets on step, what rushes past the inlet is an air ...Check the linkage foe throttle plates opening all the way at full throttle. You can do this with engine off advance the throttle to wide open throttle make sure the throttle [plates are full open and that the timing is advancing also. Ask Your Own Boat Question. It is definingly running different.Simply twist it open and monitor your engine for improvement. If your outboard motor isn’t running at its best, check the fuel vent on your portable tank to make sure it’s open. Photo courtesy of Attwood. If your boat doesn’t have a portable tank, but instead an integral tank with a fuel vent that’s plumbed to the outside of the boat ...Jul 21, 2012 · Yamaha 2 stroke. I idles fine and cranks with ease. On the hose I can run it up to full RPM, but in the water (under a load) it will " bog down". For while it would bog a little and then pick up an run normal. Over time it has progressed to the point now that it will not pick up at all. I can still manually run up the RPM on the throttle in ...
Fuel System Issues. One of the most common ways your Yamaha outboard motor will break down is a fuel system failure. Whether you’re experiencing an intermittent bog down, poor performance, or complete engine failure, your fuel system is a common culprit. Ethanol gasoline: Only use premium low-ethanol gasoline for your Yamaha outboard motor.. 10nbc news of rochester ny
One circuit is for idle. Another is enrichment, which gives extra fuel when you twist the throttle. Another circuit gives it fuel while at a steady state above idle. The enrichment and/or the steady state circuits are not providing fuel to the engine. An internal combustion engine needs three basic things to run: air; fuel; ignition.Another important difference between boats and cars is that boats don’t coast. The motor is always pushing the boat forward. There’s no backing up and a boat can’t use the engine for braking. If an inexperienced driver is running full throttle and suddenly lets off on the throttle, a small boat can nose dive and may even flip over!Thus you need only let the engine idle long enough to fully circulate the oil 30 seconds is plenty. But don’t immediately put the pedal to the metal. A few minutes of idle speed will warm the oil so it flows better. When shutting down, it’s a good idea to goose the throttle once or twice before turning off the engine.Chances are the answer to your boat engine problem is somewhere on the list. Or, at the least, the list will help you identify the actual boat engine problem you’re experiencing. 1. Empty gas tank 2. Gas tank air vent not open 3. Fuel lines kinked or severely pinched 4. Water or dirt in fuel system 5. Clogged fuel filter or screens 6.At first boat would run full throttle then after about 10 minutes boat would bog down and not get above … 2005 Yamaha 70 tlr 2 stroke Always ran well. 300 hours. Put it in the water, started fine but under load, no power maybe 2400 rpm’s.Sep 10, 2002. #4. Re: outboard stalls when advancing throttle past idle speed. Hi Jefferson,<br />Most outboard carbs have intermediat fuel openings that are located just in front of the throttle plates. The purpose of these is to act similar to the accelerator pump found on 4 stroke carbs. They are supposed to help eliminate the dead spot from ...05-Aug-2012 ... The boat motor revs out to its max when the boat is on the stand and will run at full throttle for as long as I want, however when it is under ...47 minutes ago. Southern CA Fishing Trip Planning. So I had my motor serviced a few weeks ago its a 1990 Johnson vro 200hp oil injected 2 stroke. motor has new spark plugs,impeller, water pump. the gear oil was changed, spark,compression, and carbs all checked out good. . I took the boat out 2...Increase to about 3900 RPM's and all good and smooth for a mile or so. OK let's go for it. Throttle up to 4500 and very smooth and responsive, then up to 5000 and motor running well , no hesitation, no surge. 20 minutes later we are at shrimp area. We drop pots, pull pots and repeat process to many times.Boat Trailer Winches; Boat Motor Supports & Transom Savers ... OMC 2.5L runs slow at full throttle. Thread starter my jenny; Start date Jul 20, 2015; M. my jennyBoat Trailer Winches; Boat Motor Supports & Transom Savers ... OMC 2.5L runs slow at full throttle. Thread starter my jenny; Start date Jul 20, 2015; M. my jennyAug 15, 2006 · When I try to run the boat full throttle it will bog right down after a few mintues of running. I tach out at around 4200 rpm and about 12mph. If I keep the throttle backed off a little from full it will run fine but I would like to get as much speed as I can out of her. My owners manual says I can run this motor full at 5400 rpm max. .
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