4.6 pinging

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May 31, 2004 | 12:53 PM

#1

rock&roll yogi

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4.6 pinging

I have a 97 F150 4X4 with a 4.6 it has 49000 miles a k&n filter a throttle spacer and dyna max exhaust. it pings under load i checked the maf sencer its clean. i ran premium gas it still pings but not quiet as bad other then the pinging it runs like a champ. help!

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May 31, 2004 | 03:33 PM

#2

Fordtech1

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Any codes? The 4.6L EGR passages are prone to collect carbon and restrict flow causing spark knock. DPFE, EGRVR OK?

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May 31, 2004 | 08:05 PM

#3

rock&roll yogi

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no codes. how do i check for carbon buildup

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Jun 1, 2004 | 04:53 PM

#4

JustinH

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change to a AWSF22C plug gapped at 0.054 and clean the motor up with some auto-rx treatment.

JH

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