35 hp Evinrude

[Deanrt]

Hi everyone I need some help figuring out what might be wrong with this thing. First off any help you can offer is greatly appreciated. Last week I took it out and it wasnt running very well at say 1/4 throttle. Made an adjustment on the rich/lean screw about a 1/4 turn rich and it seem to cure it. Enter today, take it out starts fine, about a min. or so later I open it up and it seems to be running fine when it has a hickup like it missed or something then ran ok for another min. or so when it just started running like crap. Shut it down turned the screw back 1/4 to lean but it didnt do any good in fact it kinda lost power. Got home pulled the plugs and the top one has a bit of carbon build up and is black, bottom one is more of a tan color both are dry. Also I just filled up with fresh gas today, 4 gal 11 oz of oil for what is about 50 to 1. Is this normal for the plugs to look different? I have a container I use to mix the gas and oil that I cant find and was told this was the correct mix, does that sound right? Thanks again, Dean

 

[tashasdaddy]

Re: 35 hp Evinrude

what year and model 35?

 

[Deanrt]

Re: 35 hp Evinrude

Its a '76 35653g. I just came in after cleaning the plugs hooking it up to the hose and messing with the rich/lean screw. Not really paying any attention to the water coming out I smelled something hot, felt the head and she was pretty darn hot so I shut it down again, pulled the plugs after maybe 2 min. running and the top one was black as can be, bottom one was just a little wet. Does it sound like it may have overheated on me today?

 

[F_R]

Re: 35 hp Evinrude

While we are waiting for the year, check the compression and spark, especially on that top one. Also, consider that it might merely be a bad spark plug.

 

[F_R]

Re: 35 hp Evinrude

We were typing at the same time. If it got stinking hot, that is not nice. Hopefully you didn't do any serious damage (we hope)

 

[Deanrt]

Re: 35 hp Evinrude

It was pretty hot, I couldnt hold my hand on it for more than a second or so. Before I shut it down this time it was spit n and sputtering pretty bad like it was way out of time or something

 

[Deanrt]

Re: 35 hp Evinrude

Update: Put new plugs in now it wont even start! Help!!!!!!!!!!!

 

[F_R]

Re: 35 hp Evinrude

Back to square one. Check the compression. Check the spark.

 

[Deanrt]

Re: 35 hp Evinrude

Update to the update: As it turns out I was given the wrong plugs, not only that they were a bit longer then what I took out. Now I dont know if the piston would/could have hit the longer plug but now the lower one, the plug, slides in and out as if its a different diameter (sp?). But the top one tightens up just fine. Any ideas?

 

[tashasdaddy]

Re: 35 hp Evinrude

pull the head, you now need a helicoil. then you can the pistons, and rings,

 

[Deanrt]

Re: 35 hp Evinrude

It seems I just went from bad to worse, story of my boating life. Thanks again, Dean

 

[slingshot87]

Re: 35 hp Evinrude

Good luck with it. Also check your igition coil pack to that spark plug a make sure everything is connected right. My 35 was doing the same thing and that was my problem.

 

[Deanrt]

Re: 35 hp Evinrude

Thanks slingshot im sure ill end up replacing both coils anyway among other things.