Replaced HG now misfiring.
#1
Replaced HG now misfiring.
I recently replaced my head gasket on my 96 xj. Today i started it up and it has a misfire. No codes on the scan tool. I know my fuel rail had some rust in it, could this be my problem? The misfire also got worse after i did a WOT run on my street. I don't know what it is. I know my temp sensor at the back of the head isnt connected. I was also wondering which temp sensor turns on the aux fan. The one on the thermostat housing or the one on the head? Thank you.
#3
#6
CF Veteran
did you replace the head bolts? check compression, pull plugs and look for antifreeze
#7
Head bolts were replaced. Im starting to think its something deeper in the motor. It knocks on cylinder five after it leans out. Im done with this motor for awhile. I might put my neighbors 0630 head that he has on the jeep and see if that fixes anything.
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#8
CF Veteran
Hows the fuel pressure? Mine had a knock at idle and a bit of a misfire, sounded like lifters,... "lean misfire", bad thing for the top end. Fix was new fp.
#9
Either way im getting a spare motor
#10
CF Veteran
#12