ZZ502 w 741 cam issues
#51
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I run those Ngk plugs but 1 size colder -8, no fouling problems. A vacuum leak that big would be instantly noticable. You wouldn't be able to idle below 1200 rpm's. It sounds like the engine runs well in the upper rpm's, just not at idle. Probably too much fuel at idle and then the opening power valve just making it worse.
#52
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Not sure on the head gaskets, I did not put them it. I am a 2 -stroke guy.
All I know is they are Cometic, the block I belive is a Gen 6. I have a Mallory 130 gph fuel pump at 4.5 psi.
The motor idles at 800 as solid as a rock, start easily. It just eats plugs.
Interestingly, the intake never fit right, and had to be machined to make it seal.........
RT
All I know is they are Cometic, the block I belive is a Gen 6. I have a Mallory 130 gph fuel pump at 4.5 psi.
The motor idles at 800 as solid as a rock, start easily. It just eats plugs.
Interestingly, the intake never fit right, and had to be machined to make it seal.........
RT
#53
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Join Date: Apr 2005
Location: my own messed up hell,OR
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and dang it listen to Mike 280 and panther.... they know yer problem.. stop bein ignorant about 4 strokes just cause ya play with a lapptop and 2 strokes... tunin a carb is highschool mechaniics class basics... even a retarded Special ed student can do it....