So I bought a 2001 XJ yesterday only 123k miles. It was nasty out yesterday and I’ve been painting in my house most of the day today so I’ve done zero diagnosing but it’s been on my mind all day so why not post about it?!
Here’s what I know about it:
-Cylinder 5 misfire
-Milky oil
-Plenty of crud in cooling system
-Good oil pressure
The guy said it has good compression and he’s replaced spark plugs. I’m gonna do a compression test and cooling system pressure test myself later. Also, I take this with a grain of salt but he said the oil is milky because someone put coolant in the valve cover.
Should I go beyond the compression and pressure test or should I accept what is most likely reality that this 0331 head is cracked?