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Replace plug and coil. Most likely the coil, we've had two do this. Builder told me the aluminum flywheel is rough on the coils, he replaces coil with every re-build.
 

Hellion25

New member
Replace plug and coil. Most likely the coil, we've had two do this. Builder told me the aluminum flywheel is rough on the coils, he replaces coil with every re-build.
Agree we've had the same problems and that's what's fixed it
 

JPR57

Member
Replace plug and coil. Most likely the coil, we've had two do this. Builder told me the aluminum flywheel is rough on the coils, he replaces coil with every re-build.
This is why we recommend NO LESS than .030 coil gap. Most find that there engines run and respond better at .040 to .050
 

Hellion25

New member
To be honest, I am not sure. Looking into that today. I think thats what it is. Last plug I pulled was nice and black. That means too much fuel and not enough air, correct?
Yea for gas our main jet is a .39 and lowside is a .24
 

DynoDon

Member
Replace plug and coil. Most likely the coil, we've had two do this. Builder told me the aluminum flywheel is rough on the coils, he replaces coil with every re-build.
Someone is making money on coils!!! I have never replaced a coil on any of my stock engines that have been rebuilt. Many rebuilds. Not saying that one won't go bad here and there but to replace a coil on every rebuild makes no sense. Shucks, that new coil could go bad before the old one did. Now keeping a spare coil is wise.
 

C&L_MOTORSPORTS

New member
Shift, what kind of springs are you running and what did you set the valve clearance at? You don't have the vent holes covered with the filter adapter gasket do you. seems Dyno Don had similar problem and the gasket solved it.
jmo
 
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