Working on a 92 Xj with 4.0 and 5 speed.
Like the title says, my old engine was experiencing a massive amount of blowby so I bit the bullet and bought a new one. Got everything reinstalled, timed it, and fired her up. It started right away and I hopped out to look over the engine bay. In total it idled for about ten seconds and then died. I let it sit a few minutes and started it again, gave it gas this time and kept it at 3000 rpm. Ran for about 30 seconds and started smoking out of the engine bay quite a bit. I shut it off, and haven't been able to get it to start again. I checked the distributor - there is spark. Checked the fuel rail - there is pressure. I did a WOT test to try and get it to start and it wouldn't. Any other ideas what it could be? Crank position sensor? I also did a voltmeter test on the #1 injector, and it was receiving 5.xx volts, I figured that would be plenty for injector pulse.
In hopes of eliminating some canditdates, here's all the new stuff that went in with the engine:
-coolant and oil pressure sensors (did cluster swap also)
-thermostat
-cap, rotor, plugs, wires
-fuel filter and fuel pump
Like the title says, my old engine was experiencing a massive amount of blowby so I bit the bullet and bought a new one. Got everything reinstalled, timed it, and fired her up. It started right away and I hopped out to look over the engine bay. In total it idled for about ten seconds and then died. I let it sit a few minutes and started it again, gave it gas this time and kept it at 3000 rpm. Ran for about 30 seconds and started smoking out of the engine bay quite a bit. I shut it off, and haven't been able to get it to start again. I checked the distributor - there is spark. Checked the fuel rail - there is pressure. I did a WOT test to try and get it to start and it wouldn't. Any other ideas what it could be? Crank position sensor? I also did a voltmeter test on the #1 injector, and it was receiving 5.xx volts, I figured that would be plenty for injector pulse.
In hopes of eliminating some canditdates, here's all the new stuff that went in with the engine:
-coolant and oil pressure sensors (did cluster swap also)
-thermostat
-cap, rotor, plugs, wires
-fuel filter and fuel pump
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