Racingjunk Forums - View Single Post - 383 backfires on passenger header at big end

10-21-2010, 09:05 PM

#4

kwkracing

Senior Member

RACING JUNKIE

Join Date: Dec 2004

Location: austin texas

Posts: 729

it could be many things a broke or weak valve spring is what i would check for first if it was running fine before. Also do a leak down on the cylinders to make sure the rings and valves are sealing. That will tell you real quick were the cause is

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