Verbalkint99

Been having oil pressure issues so I swapped oil pump drives from my parts jeep, both are 2000 XJs with 4.0

Did the swap....now the engine turns over but wont start....

put the original drive back in.....no start...

I know I screwed up the timing, how do i fix it?!?!?

CCKen

If you follow these FSM procedures you should be able to reinstall your OPD properly.

Finding TDC compression #1 Cylinder is required. You'll need to remove #1 spark plug, have a helper turn the vibration damper with a 3/4" socket and ratchet while you hold your finger over the spark plug hole until you feel the #1 cylinder come up on compression (push your finger away with compressed air), then you will need a mirror to see the index mark on the damper while you turn the damper to match the index mark with the zero "0" mark on the timing chain cover timing marks.







After you've installed the OPD and cam sensor you'll need to take your Jeep to the dealer to have them use their DRB III tool to adjust the timing dead nuts, as described in the procedure.

Verbalkint99

Ken, I have been searching and reading indexing instructions all evening....this is the best explanation yet! Thank you!

CCKen

Got to take care of my Michigan buddies.

Verbalkint99

Back on the road, thanks again!

CCKen

Thanks for the follow-up.

Cheers