my evinrude is having problems running at full speed?

Question

my 6 h.p. fisher evinrude runs very good exept when i reach full speeds it will run for a while and then it will just die randomly. any ideas what could be wrong?

Answer 1

Could be float in carburetor problems, blocked fuel filter, vacuum leak in fuel line, bad reed valve and leaking crankcase gaskets.

Of course, don't overlook possible plugs breaking down under load.

The carb floats will sometimes stick causing either too much gas or not enough, but either way, it will kill the engine.



Thumbs down, again? and yet the stupid ba***rd didn't give any ideas of his own as to the probable cause or solution. Yahoo should get rid of this damn feature.



Now,back to the problem. After reading again, if you're using a remote fuel tank, there might be an obstruction in the fuel line, or air leak, or the vent n the tank might be either closed or plugged.

This would explain the fact it runs for a while then quits when under load.

If it smokes a lot before stopping, then look for sticking float, if not, and it starts again after a short wait, then look for the fuel supply, and tank vent.

Some times the magneto will fail when hot, but his is rare and only gets worse, fast.

Answer 2

hi, This challenge does sound like an air leak. the main possibly criminal stands out as the carb gasket. you are able to examine for air leaks by potential of using WD-40. connect the straw to the WD-40 nozzle and spray around the gaskets and hoses with the engine idling. If the cost adjustments dramatically then you definately've got here upon the leak. to help isolate a challenge to a minimum of one cylinder you ought to use a pair of spark plug pliers or a nicely insulated glove to get rid of the plug wires separately. Pull one plug cord and pay attention for adjustments. If the engine maintains to run at an speeded up velocity, replace that cord and bypass to the subsequent. once you pull the offending plug cord the engine will idle at below general velocity. you are able to then greater troubleshoot that cylinder to discover the challenge. If each and all the wires reason an identical result then your timing advance ingredient of the throttle could be caught in a complicated place. you will decide on a timing gentle to examine timing yet a minimum of those exams provides you with the documents mandatory in the previous you run out and drop $one hundred.00 on greater techniques. reliable success and happy boating.

Answer 3

Is this an outboard boat engine ? Anyhow, you're in the wrong YA site. Suggest that you go to YA "Cars & Transportation."