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When the gear is engaged the engine dies. If you believe a spun prop is to blame for your boats inability to produce speed at full throttle you should take it a.
Remove it and check for any of the above symptoms.
Outboard motor stalls at full throttle. Outboard stalls when advancing throttle past idle speed Hi JeffersonMost 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 idle to advance throttle.
Because outboard engines tend to sit over the winter time holes in the intake manifold gasket can occur. These increase the air intake causing a lean fuel mixture and vacuum pressure problems. The result is poor acceleration rough idle and stalling.
A manifold leak is easily detected by a hissing sound coming from the source of the leak. Hook up your gauge on the output side of the pump and see what the fuel pressure is reading when the engine stalls out. If its good 3 to 7 psi when the engine stalls out then problem is in the carb.
If fuel pressure is low or zero then there is still something going on with the plumbing. Some old mercs have a piece of metal below the engine housing in the exhaust channel that can break lose and wedge in the exhaust channel. If this is the problem the only fix is to take the head off and remove the metal.
You can run em without the metal. The sympton for this situation is the motor will idle ok but wont run at full throtle. My 2003 2 stroke 150 merc runs fine at 12 throttle but dies out at full throttle after about 3 mins.
It begins to sputter until I either ease off the throttle or it shits off. It it hard to start after shutting off and cranks similar to trying to crank it with the kill switch off. I have changed the fuel filters had carbs needes replaced new.
Why does my outboard stall. 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.
The engine stalls in neutral at idle only. When your outboard starts right up keeps running with throttle applied in neutral but shuts down the moment you come back to idle speed in neutral the issue is likely to be a sticky or broken AIS automatic idle speed valve. - Finding the sweet spot on Boat motor idle.
Spark plugs that are worn out broken melted corroded or covered in deposits can fail and cause the engine to stall at full throttle. Assess the state of the spark plug. Remove it and check for any of the above symptoms.
In case of any oily build-up clean the spark plug and check for defects. The boats motor will still operate and function as it should but the lack of a connection between the propshaft and propeller blades drastically reduces the boats top speed. If you believe a spun prop is to blame for your boats inability to produce speed at full throttle you should take it a.
30hp model AE loses power at 34 to full throttle. It seems to be a fuel issue. When it starts to lose power I can squeeze the bulb once to keep it running for another 30 seconds or so until it starts running weak again.
Squeeze bulb and it improves. If your outboard engine is sputtering at any speed idle or full throttle it could be the result of several common malfunctions. You may need to make a few timing adjustments or replace a spark plug or you may need serious mechanical inquiry.
Make sure the throttle position switch TPS is fully closed or activited when the throttle is returned to idle speedyou may need to adjust your throttle cable. Have a 1989 50 hp 3 cylinder yamaha outboard. It starts fine but stalls out after 10-15 seconds.
Will stay running if I throttle up while in neutral but stalls out when I. 2010 Tohatsu 98 4-stroke stalls at idle or low speed. Fine when underway of full throttle.
Checked out low speed jets in carb looked clear replaced needle and gaskets any way. Using prem gas with StaBil. Messed with idle and throttle adjustments no good.
When the gear is engaged the engine dies. When the gear is not engaged the engine stalls when opening the throttle and goes to normal again after the initial stall. When I open the Choke 13th everything is normal when opening throttle gear engaged or not.
This suggesting that there is someting wrong with the mixture. The temperature of the engine is ok. When the engine is in free run the.
This is really an easy fix you can do yourself without having to pay a mechanic. HERE IS PART 2 of this Mercury outboard fix. Finding the high pressure f.
When an outboard motor runs at speed but cannot hold an idle it usually indicates a problem with the carburetor. Outboard motor designs vary depending on make and model but all operate on similar principles. Consult your owners manual to check items that may be.
Yamaha 150HP 4 stroke outboard boat motor sound at full throttle - YouTube. BZ PHS ANGLE 5Fixed. If playback doesnt begin shortly.
About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features Press Copyright Contact us Creators. If it isnt it will cause your engine to become fuel starved run rough and eventually stall. Simply twist it open and monitor your engine for improvement.
If your outboard motor isnt running at its best check the fuel vent on your portable tank to make sure its open. Photo courtesy of Attwood. I have had the top and bottom redone carbs adjusted.
It runs at low rpms real good but when i throw it down it bogges down and want to stall and some times it bogges down then catches up and goes all out. It runs and idles fine. Goes into gear fine and runs good at 40 rpms but then bogges down at full throttle and i have to keep pulling the throttle back and throw it down againand after.