There is a high pitched noise coming from the fuel cap. The noise stops when I loosen the fuel cap, but if I remove the cap when the engine is on it quits.
on my 2004 F150 4x4 when I shift into 4wd or into 1st or 2nd the engine seems to be slower or build...
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on my 2004 F150 4x4 when I shift into 4wd or into 1st or 2nd the engine seems to be slower or build RPMs slower. Is this normal?