Ok.. so Ive been having some issues with dieseling with my fairly new (7k miles) ZZ4 crate engine. _Its got a Barry Grant zz4 crate carb on it.
So after flogging the distributor back and forth trying to find a spot where it wouldn't ping so bad and not diesel and simply not finding it I figured I better do it the right way.
So with the engine at operating temp I set the timing to 12 degrees.. The engine runs good at that but still diesels. _So I figured maybe there's something wrong with the vacuum advance. _So I disconnected and plugged the vacuum line and set the base timing to 4 degrees. _As soon as I plugged the vacuum line back in it jumped to 23 degrees. _To me that just doesn't sound right. _
The vacuum advance is connected to straight vacuum not ported.
Any suggestions? _
DUH - I figured it out after thinking about it..
I set the base timing with the vacuum disconnected to 12 degrees. Total timing 36 degrees at 3500 rpm.
THEN connected the vacuum advance back in Sometimes I wonder about myself
So after flogging the distributor back and forth trying to find a spot where it wouldn't ping so bad and not diesel and simply not finding it I figured I better do it the right way.
So with the engine at operating temp I set the timing to 12 degrees.. The engine runs good at that but still diesels. _So I figured maybe there's something wrong with the vacuum advance. _So I disconnected and plugged the vacuum line and set the base timing to 4 degrees. _As soon as I plugged the vacuum line back in it jumped to 23 degrees. _To me that just doesn't sound right. _
The vacuum advance is connected to straight vacuum not ported.
Any suggestions? _
DUH - I figured it out after thinking about it..
I set the base timing with the vacuum disconnected to 12 degrees. Total timing 36 degrees at 3500 rpm.
THEN connected the vacuum advance back in Sometimes I wonder about myself