Poping or Misfiring Under Hard Accelearation - Power Hungry Performance Forum

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Poping or Misfiring Under Hard Accelearation

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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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#12

Sat, April 18th, 2009, 10:47 AM

Jackpine Jackpine is offline

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Join Date: Nov 2008

Location: Among Elk, Deer and Javalinas on the Mogollon Rim in Aridzona

Posts: 3,243

Minor pinging shouldn't hurt, but I still don't like it. You COULD retard the spark by 0.25 degrees, which would probably get rid of it (and shouldn't cost you much in power). I wonder if you're running slightly lean? That can cause pinging too.

- Jack

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