Close
QUESTIONS

RepairPal is your advocate for car care advice and guidance

Q: Have code po306 cylinder 6 misfire detected. What should I look for bad plug
on 1998 Mercury Villager

Seems to be running on 5 cylinder when under lug but runs fine some of the other times. Starts and idles fine.
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
yes i changed knock sensor lower intake gasket upper intake gasket added antifreeze also changed injector rings still runs rough and doesn/t stay on steady shuts off
Didn't find what you were looking for?