I have a 1991 OMC Cobra. gm v6.
Awhile ago I was getting water in my oil. My head gaskets were leaking. So I pulled my heads off and changed them. May I mention I had gotten alot of water in the engine. After this I put everything back together as the repair manual said. Than I ran the engine on muffs and changed the oil quite a few time til there wasn't that much water left in there. Every since than I have not gotten my engine to run right at the lake under load.
Heres what happens at the lake.....I will take the boat up to around 2000 rpms and run it at that for maybe a minute or 2 and the engine will start to lose its power and eventually die on me. The more I do this I start to notice certain symptoms. 1.) Theres white smoke coming out of the breathers on the head covers. 2.) Theres quite a bit of back pressure coming out of the carb. after it dies. (Sounds just like a pop can opening) and there is white smoke. 3.) After it died one time. without doing anything else I went and took the #1 spark plug out and it did the same thing. It was like a pop can opened when I took the spark plug off.
I am thinking its got alot to do with the value adjustments. I can not get them adjusted right after I had the water incident and changing the head gaskets. I've done what the book said. (tighten the bolt til the push rod has zero lash than do a full turn) make sure top dead center and do certain ones etc. etc....Than I did what a mechanic told me to do. Do it with the engine running and losen til you hear ticking than tighten til you dont hear it anymore than a full turn.
Nothing is working...Is this my problem or what do I need to do? I have no clue what to do anymore..I hope I gave you enough information. Any help would work! Thanks!
Awhile ago I was getting water in my oil. My head gaskets were leaking. So I pulled my heads off and changed them. May I mention I had gotten alot of water in the engine. After this I put everything back together as the repair manual said. Than I ran the engine on muffs and changed the oil quite a few time til there wasn't that much water left in there. Every since than I have not gotten my engine to run right at the lake under load.
Heres what happens at the lake.....I will take the boat up to around 2000 rpms and run it at that for maybe a minute or 2 and the engine will start to lose its power and eventually die on me. The more I do this I start to notice certain symptoms. 1.) Theres white smoke coming out of the breathers on the head covers. 2.) Theres quite a bit of back pressure coming out of the carb. after it dies. (Sounds just like a pop can opening) and there is white smoke. 3.) After it died one time. without doing anything else I went and took the #1 spark plug out and it did the same thing. It was like a pop can opened when I took the spark plug off.
I am thinking its got alot to do with the value adjustments. I can not get them adjusted right after I had the water incident and changing the head gaskets. I've done what the book said. (tighten the bolt til the push rod has zero lash than do a full turn) make sure top dead center and do certain ones etc. etc....Than I did what a mechanic told me to do. Do it with the engine running and losen til you hear ticking than tighten til you dont hear it anymore than a full turn.
Nothing is working...Is this my problem or what do I need to do? I have no clue what to do anymore..I hope I gave you enough information. Any help would work! Thanks!
