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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.


 
 
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Old Mon, December 13th, 2010, 10:07 AM
Toigs325 Toigs325 is offline
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Default Popping sound during acceleration

The popping sound has only happened twice, down the same stretch of road, 2 minutes apart. Both were right after I really whomped on it. Could it have just been bad gas (most of the fuel I use is 89 octane 10% ethanol) or am I most likely running lean? Can a local shop check to see if I am running lean?

I have the stock intake but it is 3 hours away and is a pain to reinstall...it would take me at least a month or two to get my Gryphon if I tried to order it now with the holiday.

Thanks for your help guys
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