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Old 03-31-2008, 06:53 AM   #1
70' GMC
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Join Date: Oct 2006
Location: Birmingham AL
Posts: 2,488
Question Backfire? The motor is not even a year old

The motor made a pop like sound and there was a grayish black smoke that came into the cab. I have not rawhided it none. I gave it HE77 going toward wilmington, I was passing everything on the road except near lake waccamaw, when I got towards a Citgo, an ABC store(Alcohol) I saw Blue lights and slowed Ol' Blue down. I was running 70 to 90 MPH, but mostly 75 to 80. So did this might have caused it to backfire I guess. What is Backfire, really never had any vehicle to backfire and my autotech class never covered it or mentioned. Is it over for my motor or do I need another motor?
Is my motor O.K.?

Please don't bash me cause I never had this to happen to me til now.
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Was: 1970 with a 350 4barrel and 288 horses

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Last edited by 70' GMC; 03-31-2008 at 07:02 AM.
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