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Discussion Starter · #1 ·
So I have built 4g64 long rod with gsc 2 cams
1400cc injectors and double pumper fuel system. I got my car tuned on haltech and after about 65 miles I noticed the sparks plugs are fouling out. There like black soot when I change them. I have changed them 3 times and get the same result after about 60 miles and the car starts running super rich when they foul. Any help and advice would be amazing.
 
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