Originally Posted by 99 Navi

Hi .....

I recently purchased a 99 Navigator 4x4 with 74,000 miles from an original owner and love it. It has the 32 valve V8.

I have noticed it has a bit of and engine miss at idle. I ran some fuel injector cleaner through it with no benefit.

My guess is that the sparkplugs are original ...... so perhaps that is the first place to start? Should I use OEM plugs from Lincoln or is there a good after market brand?

Are there any other ignition or fuel delivery factors that I should look at while trying to eliminate the engine miss?

Thanks ...... Rob