99_XJ_
NAXJA Forum User
- Location
- Howard, Ohio
Something I noticed today while washing my XJ(which rarely happens). The end of my tailpipe is charcoal black and when running water ( which is normal) comes out but it is filled with black stuff. I'm pretty sure its carbon but why so much? I changed my old spark plugs and they were black as well.
What causes this? Should I run a higher quality fuel? I use BP 87 octane.
Thanks in advance. (99 sport 4.0 115k miles
What causes this? Should I run a higher quality fuel? I use BP 87 octane.
Thanks in advance. (99 sport 4.0 115k miles