My 1988 YJ with TBI has given me hell over the past few years. She's never failed on me but causes me headaches everyday trying to make it run perfectly. My issues include high idle (1100 rpm) for the past few years, recently have noticed a good amount of blow-by and oil leaks. It gets 120psi on all cylinders during a compression test. I will list all work I have done to it to try and fix these problems. Please let me know if im missing anything. I have followed the diagnostic tree on the FSM to the tee and nothing has really fixed it.
- Metal valve cover from newer jeep YJ
- New Head gasket, Head valves reseated, new rockers and push rods
-New valve cover, PCV and CCV cleaned,
-New exhaust/intake manifold gasket
-New Injector
-New ISA
-Full rebuild on intake manifold (all gaskets replaced, and all sensors are within what the FSM states they should be, Cleaned inside and out)
-New EGR valve
-Timing checked (was off by 2 degrees but made no difference when corrected)
-TPS and ISA readjusted
-New cat
-New Exhaust manifold
-New Cap, Plugs, and wires
Oil is now coming out of where the distributor meets the block - I just replaced the gasket and am still experiencing the leak. Please note I am a novice mechanic, I know I have fired the parts cannon a few times but it was all for good reasons. Please let me know what you think my issue may be or If I am missing a part of the diagnostic process.\
BTW - I love this thing, the diagnostic process is half the fun...
