P-Rod

Hello all,
As the title states, I'm having a misfire in cylinder 8. My indie shop diagnosed it and told me it could be the plug, wire or the coil. So I came to the conclusion that I will replace the plugs with Bosch 7422's and wires with Magnecor wires myself. My question is, where is cylinder 8 located? So I can replace the coil. I don't want to replace all coils because they cost about 130 each. If anybody has a diagram or point me where I can find one, it's much appreciated
Thanks in advance!

Solo wing

-My advice is to stick with OE/Bosch wires, I had bad experience with Magnecor. The resistance is high, only worked for 6 months before starting to misfire like crazy and the mileage was all over the place.
-You can diagnose the problem it's fairly easy, just move the coil to another cylinder. If the misfire moves to the other cylinder you know it's defective.
-How are the valve covers? a leaking cover could let oil foul the spark plugs.
You can see cylinder numbers on the engine, 1-4 passenger side, 5-8 driver side. 4 & 8 are closest to firewall.

Good luck.

cm60k

That's wired Faiz,

i had & have Magnecor wires with all current & previous "C280/C43/E55/C43-with 5.4l",,

i don't have any issue with them, they works great..!

ZAYED,,

wasp01amg

I got the code for misfire on #8, cylinder closet to driver. Sometime when I came to a stop the car would idle rough. Yesterday I swapped the coil pack between 7 & 8, cleared the code and went a for an 80 mile spirited drive. So far no codes and is running great.

Try swapping coils and see what happens.

P-Rod

Solowing- I will check the plugs for any oil asap. And as far as the magnecors go, did they throw any codes eventually? What exactly was faulty?

Zayed- thanks for your input. It definitely helps a lot to know the magnecors hold up as well as oem.

Wasp- I'll swap out the coils as soon as I get a chance. Did that clear your check engine light?

One more question, what is the correct gap for the plugs? 7422's come pre-gapped, I just want to double check

wasp01amg

I cleared the CEL with my code reader. So far no codes have popped up. No guarantees, just a way to help troubleshoot the cause of the misfire.

Solo wing

It worked for the past few months, then out of nowhere started getting misfires, rough idle, sluggish acceleration, popping sound from the exhaust and fuel consumption was ****.
No codes, No CEL As soon as I installed Bosch wires all of that went away.
I think Bosch platinum comes pre-gapped? Check in the owners manual just in case.