After It Runs Awhile

[tmccowboy]

I HAVE A 82' 55 MERC. AND STARTS FINE RUNS FINE, UNTILL IS HOT OR WARM. THEN IT IS VERY HARD TO START AND WEILL NOT IDLE. TO ME IT HAS TO BE SOMTHING ELECTRIC BUT DO NOT NO WHERE TO START.

 

[bgbass.1]

Re: After It Runs Awhile

first thing is to make sure its not getting hot you should be able to hold hand on top of head for a few seconds

 

[tmccowboy]

Re: After It Runs Awhile

No its not geting to hot. Plenty of water runing through it. I think somthing elect. is geting hot. It gets very hard to start,and will not idle. But when it does start it runs fine untill you kill it. thanks tmccowboy

 

[hkeiner]

Re: After It Runs Awhile

There are lots of possibilities. If I had your symptoms, I would use a systematic approach to narrow it down

To test ignition, I would check to see if ignition voltage is dropping/missing during engine bog/stall. This can be done in a variety of ways. I prefer to check secondary voltage in the spark plug wires with a SmarTach meter. You can also use a timing light or dva meter to test for ignition failure during engine bog/stall. I find the SmarTach meter is more convenient and more conclusive in eliminating failed ignition as the problem. The following website can help in groubleshooting the ignition.
http://www.homestead.com/dolphinmarineservice/Ign5.html

If it is not an ignition problem, I would clean the carbs to make sure none of the passages that are part of the idle circuit are plugged up.

This is what I would do. Others on the forum may have additional or better suggestions for you.

Good luck

 

[tmccowboy]

Re: After It Runs Awhile

Thanks Guys For The Help. I Will See What I Can Do

 

[mercerfisherman]

Re: After It Runs Awhile

Check your stator. Same thing happened to me on my '84, 50 hp merc this past summer.