Originally Posted by
Merg
UPDATE!! It’s fixed! So it was a combination of a few things that was causing all of the intake backfire and no power issues. First, I removed all of the emissions parts. Vacuum lines, charcoal canister, EGR and capped everything. Which made the rich running condition stop. Then, I used my timing light to find that the ignition timing was firing before the intake valve could completely shut, causing the fuel mixture to detonate allowing the combustion to push back into the intake manifold. So I loosened the 12mm bolt holding the distributor and rotated to the highest rpm I could get and then adjusted the idle back down. She’s running like a champ now. No more popping and normal acceleration power.
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