Re: Misfire and all around crappy performance
Hey Jared. Welcome to the forum!
How long have you had your XF?
First off the rev under no load limit is a built in limit so you don't do damage to the engine.
Do the misfires affect all cyls or just selected ones?
Check for vacuum leaks.
Last edited by tighed1; Aug 10, 2010 at 12:20 PM.