I have a 95 jaguar xj6, motor turns over but wont start. checked spark plugs and 3 of the 6 had oil in them. took cam cover off. cleaned and replaced gaskets, cleaned spark plugs, it turns over better but still wont start. i was told that the engine does not have a PCV valve but it has something similar that might need boring out. help

Sounds like blown head gasket or cracked head and leaking cam cover gasket around spark plug seals

common problem for dodge 4 cylinders...
never lower the oil level unless its real high on the dipstick..
you have the replace the spark plug guide seal.... it seals it from oil in the valve cover going into the spark plug guide and killing the spark... yes oil goes past the threads on the plug....

just did the valve cover on my 94 jaguar... has the same setup valve cover design

hi there i would be checking the crank angle sensor this tells the computer when and where to fire the ignition and sets the timing

I have had the distributor rotor fail, leaving me stranded - twice. Not sure what can go wrong with them but replacing it was what it took to get it running again.

Thats funny. How does anyone sell you plug wires for a car that does not use wires? You need to keep out of the cheap auto parts stores. There are coils for each cylinder. The coils are under a cover at the valve covers. Be sure to use the correct spark plug. Denso 5304 or NGK 6962

Check the wires and firing order..??

Does check engine light or wrench light come on? If yes, get free computer scan from Autozone or other parts store that offers free scan. Sounds like a sensor is failing

During cranking @crk sensor u should see up to 1 ac volt. Also if cam position sensor is @ fault u may not get a code, internal fault. Cam sensors are not availible,but rebuild kit is availible. The engine has to be set to top dead center aligning mark on crank pulley & tab aswell as mark on cam sensor itself.

Make sure your getting spark to the plugs. It must be a good hot spark.
If that's okay then you might have a timing problem with the crank and cam. (Jumped time).
You'll need to check the timing marks on the crank and cam timing gears to make sure they didn't jump out of time.
Check for any vacuum leaks as well.

Had this problem before and found it to be the crankshaft sensor. This would be cheaper fix than the Lambda sensors.