SOURCE: misfiring spark plug coils (2)
your valve covers are leaking replace asap and do it again all boots and coils
SOURCE: Check Engine Light is on and the code is P0303
Hello I need a help.
I have 1999 lincoln town car 4.6L V8.They have check engine light on. P 0303 cylinder 3 missfire.
I was changed spark plugs,fuel filter. check compression test 150psi. fuel pressuer 50.
swiching cylinder 1 to 3 fuel injector and coil. but they still have engine code
SOURCE: 2004 Lincoln navigator misfire on cylinder 8 error code p318
Replace the coil pack once more. I went through 2 new ones on my f150 on one cylinder. One worked, the other didn't (both new off the shelf). Condensation build up in the boot caused mine to misfire. Anytime you replace a coil pack, squirt a little silicone grease inside. This will prevent condensation from hitting your plug. Fords are notorius for this problem, especially if you live in a humid area. Also, make sure and clear the codes after you make the repair.
SOURCE: changing spark plugs on lincoln town car
Remove the spark plug wires, remove the spark plugs,replace them. Do this one cylinder at a time if you never did it. On that year you may need to remove the upper intake to access the plugs on one side. In that case go to a shop. This would not be a novice job.
SOURCE: 02 navigator misfire #7 cyl still after i changed plugs and coil
You've tried everything but getting the timing checked out. You've done all the other parts of a tune-up but that.
When you changed the spark plugs did you notice #7 was especially dirty or greasy, this could point to a seal being broken or a piston ring that needs replacing.
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