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Thread: 454 backfire
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Old August 25th, 2011, 10:09 PM   #19
Hole tester
Join Date: 05-06-10
Location: muskegon,mi
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i really dont see it being springs i noticed today it seems to get worse that hotter it gets
i cant think of anything else it could be other that a burnt intake valve but i did a leak test and did find any leaking. maybe ill take the heads off for scrap it
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