Pinging
04-06-2012, 04:11 PM
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Pinging
Hi I have 08 F150 with a 5.4 engine and put new ford plugs in two weeks ago. With the new plugs in, it has started pinging when accelerating and under load, which it didn't do with the old plugs. The plugs that came out were HJFS24FP and the same plugs went in. Any thoughts?? Could it be timing chain, phasers. Thanks for any help.
