1981 evinrude 55 hp

[Honea]

I have a 1981 evinrude 55hp and it runs good until it gets 3 miles down the river and it just dies! Carburators are clean, fuel pump just got rebuilt and all fuel line have been changed! I thought it was fuel related or the coils but when it dies its still getting fire but won't crank! If it sits for about 20 or 30 minutes it will crank right up! I don't know what else to check and all the boat shops are backed up at least a month, my buddy said try this forum! Thanks

 

[Daviet]

Re: 1981 evinrude 55 hp

Are you using a 6 gallon tank or a built in tank? How is the vent system, open/clear?
Usually if it will start after cooling off, it tends to be an electrical problem, something overheating in the ignition system.

 

[Honea]

Re: 1981 evinrude 55 hp

Are you using a 6 gallon tank or a built in tank? How is the vent system, open/clear?
Usually if it will start after cooling off, it tends to be an electrical problem, something overheating in the ignition system.

I have a plastic 6 gallon tank! Vents seem to be free and clear!

 

[boobie]

Re: 1981 evinrude 55 hp

If you're checking your spark with the plugs, forget it. The spark should jump a 7/16 " open air gap on a spark tester.

 

[Honea]

Re: 1981 evinrude 55 hp

If you're checking your spark with the plugs, forget it. The spark should jump a 7/16 " open air gap on a spark tester.

Ok, I'll get a spark tester and try it! Thanks

 

[Honea]

Re: 1981 evinrude 55 hp

I bought a air gap spark tester and it shot the 7/16 gap! It still
Does the same thing!

 

[Daviet]

Re: 1981 evinrude 55 hp

Did you check the spark when it stalled, before it had time to cool off?
If you have spark when it stalls, it sounds like a fuel problem.

 

[Honea]

Re: 1981 evinrude 55 hp

Did you check the spark when it stalled, before it had time to cool off?
If you have spark when it stalls, it sounds like a fuel problem.

Right when it died I checked it! I guess I'll start taking carbs down next

 

[Rudemen]

Re: 1981 evinrude 55 hp

I would check the fuel pump to make sure it's pumping fuel with the fuel tank sitting on the ground before taking carbs off. Disconnect both fuel lines going to both carbs and spin the engine over to make sure fuel squirts out, if you don't get fuel check the fuel filter and also check the incomming screen with one screw thru the middle on the fuel pump.

 

[Honea]

Re: 1981 evinrude 55 hp

I would check the fuel pump to make sure it's pumping fuel with the fuel tank sitting on the ground before taking carbs off. Disconnect both fuel lines going to both carbs and spin the engine over to make sure fuel squirts out, if you don't get fuel check the fuel filter and also check the incomming screen with one screw thru the middle on the fuel pump.

I will try that this evening, thanks for all the help!

 

[swamp-fox]

Re: 1981 evinrude 55 hp

Maybe you should just give the motor to your buddy..