Hello everyone. Glad I found this forum. Got a problem and need some help PLEASE. Have a 90 xj, manual transmission. Bought it from a guy who couldn't get it running....figured I was smarter than him...LOL. Nope. This is what it does......turns over and fires up. then quits. Every once in awhile it may run for about 4 seconds then just like someone turns the key it shuts right down. Heres what I did/checked.
Has 39psi at rail
Has spark
replaced crank pos sensor
jumped ballast res.
cap and rotor
coil
cleaned contacts on icm
checked voltage on MAP
think i checked TPS too.
pulled fuel rail back with injectors attached and cranked motor to verify gas squirting out of injectors.
When I pull plugs after cranking, they are carboned up and dry....??
Any ideas???
Has 39psi at rail
Has spark
replaced crank pos sensor
jumped ballast res.
cap and rotor
coil
cleaned contacts on icm
checked voltage on MAP
think i checked TPS too.
pulled fuel rail back with injectors attached and cranked motor to verify gas squirting out of injectors.
When I pull plugs after cranking, they are carboned up and dry....??
Any ideas???