Apple395

Please help!

My car is getting an occasional miss (PO301) it will "destroy" plugs it gets what looks like rust on the end of the threads (part in head), and the porcelain turns light brown (like oil color) and gas red specs on the porciline as well. It takes only 1000 miles to do this to the plug (only cylinder 1)

I replaced with NGK iridium but still happens...

I think it could be cylinder 1 gets the most blow by b/c it's closestet to the PCV...and the Evap purge?!

Any help/ advice REALLY appreciated.

Car is 2000 Civic EX (D16Y8) (80k on motor 250+ on body)


Pics uploaded. If any trouble would be glad to e-mail!

Former User

Have you also replaced the plug wires, cap, and rotor?

Jimster480

It happens on my daily civic also.. It ruins the plug in cylinder 2 after a couple K miles.. But it has 204k on it, and I haven't been able to figure out what causes it..

Apple395

Yeah Ron, had compete tune-up before changing plugs...(cap,rotor,wires)

All other cylinders are clean and perfectly white...not sure why cylinder 1 is so dirty...

Any ideas?!

Jimster480

yea i have literally the same thing..

Former User

Compression test the cylinders.