It’s not missfiring cause it’s lean, it’s missfiring because it’s rich.
Number 6 plug indicates too much fuel every time I pull it out.
I’ve tried different ignition boxes thinking that was the issue.
I was running a crane cams hi-6 cd box and I thought maybe there was an issue with it.
So I get this msd box and it’s still missing.
So obviously the crane box wasn’t the issue, so now I have two cd ignition boxes which isn't a bad thing anyways in case something happens to one or the other.
The plugs are not oil fouled, so I can rule out valve seals and valve guides.
Every time my plugs foul out it’s fuel not oil.
No vacuum leaks, no egr set up.
This is your basic set up with an intake and carb and distributor.
No emission stuff at all.
I’m going to try leaning everything out next, I’ll drop the idle feed restrictors a little and drop the main jet a little and see what happens.
At this point i don’t know where else to look besides the carburetor tune.
Every last piece to the ignition is brand new, timing is dialed inn perfectly.
Compression is 155psi across the board.
Rocker arms and push rods are all tight and everything seems to be functioning properly when I pulled the valve cover on passenger side and let the engine idle while I watched everything.
I was just wondering if anybody here has seen a rich condition cause a missfire at a certain rpm.
Any missfires resulting in a poor carburetor tune have always been lean with the ones I’ve seen, I’ve never seen a rich condition cause a missfire like this.
So for now I’m thinking carburetor tune, cause I’m just not seeing any signs to point towards ignition or mechanical failure in the valve train.