random misfire '97 expy 290k

[FordandPolaris]

Yeah then I doubt it'll be compression too. Still doesn't hurt to do. Do you see any carbon tracking on the plug?

 

[mkc1962]

Ive seen plugs much more oil fouled than that and still not create a misfire problem. But I do see one problem AUTOLITE. I myself just went through similar irratic misfire problems on 2 of my vehicles, one a toyota with 180k and just last week my expedition with 110k. IN both Cases I had recently replaced the plugs using AUTOLITE Platinum. Both vehicles had eventual plug failures with less than 10k miles. I replaced the ones in my toyota with OEM. When I get the chance I will be replacing these in my expedition also with OEM. AUTOLITE can from this day fwd kiss my brown eye.

 

[IMINYOURCHAIR]

no carbon tracking on plug that I observed. Will go ahead and get some motorcraft plugs and update.. did you have any problem with aftermarket wires? I've used Aftermarket wires on several vehicles and never had a problem with them

 

[IMINYOURCHAIR]

I believe I have autolite wires, will go with motorcraft if I have to but they are like $60 a set

 

[IMINYOURCHAIR]

motorcraft double plat plugs and motorcraft plug wires are on there way, got them for $92 after shipping and 5% discount on rock auto.. should be in Wednesday and I will install that weekend..

 

[IMINYOURCHAIR]

also, I went ahead and grabbed a feeler gauge so I can check the gap before install, also, I got a wobble head extension for the pass side bank since the plug wells are angled to the back where the drivers side is angled to the front.

 

[IMINYOURCHAIR]

Well, the parts go in this Saturday

 

[Bedrck47]

use some dielectric grease on the ends of the wires Make sure the inside of the coils are clean

 

[IMINYOURCHAIR]

coils are sparkling inside, PO used dielect grease thankfully. I do need to pick up some on my way home tomorrow eve. what bran do you recommend? I'll need enough to do another car too, my lady's '04 cavalier is getting a tune up within the next couple months.

 

[Bedrck47]

I got a tube at advanced auto you will have enough to do more than you need