Hey all, great site with a ton of info!
I recently purchase a 1990 yj with a 2.5 that had really bad blow by. I almost wanted to hook a whistle up to the oil cap just to hear the tune it would play.
I found a 1995 2.5 out of a wrangler for dirt cheap, and always wanted to try my hand at a rebuild. All seemed to go well, it turned out this newer engine had already been rebuilt. I didn't touch the cam, crank or timing chain. Replaced the rod bearings and oil pump closed her up and swapped all my 90's parts onto it.
I read somewhere that the 90 flywheel and the 95 were not interchangeable so I bought a new 95 flywheel. It looked identical to the 90. Regardless I installed it, dropped the engine in. Everything hooked right up with no issues.
Problem is there is no fuel whatsoever entering the intake. 20 seconds bursts of trying to start it 4 times with a little rest in between and the intake is bone dry. I am thinking I may have made a mistake using the newer flywheel because the crank position sensor is also different between 90 and 95.