help will not start

[One hyper xj]

ok I turn the key and it will just sit there and crank but will not start need feed back. could it be fuel or switch related I need feed back ASAP..
BTW this is in my 1987 4.0L jeep cherokee with the 4speed auto

 

[1989laredoxj]

take of the air intake hose spray starter fluid into the ait intake tube...dont get it on your air filter. Then go and try starting it

 

[logdog]

You first need to determine if you have spark. If you have spark, next would be fuel delivery.

 

[1989laredoxj]

if its cranking shouldnt it have spark?

 

[skipc]

Lots of post here on pre-91 XJs not starting, including some of my own, but will summarize below:

- Turn key on, do you hear the fuel pump? should be yes.

- go to schrader valve on fuel rail (MPI) or near the TB (TBI) and press it in and fuel should squirt out. If not, no fuel pressure.

- More likely electrical though. Check for spark while starting (pull HV coil wire). If not:

- run a jumper from the battery neg. term. to the frame of the coil. If it starts, it's a bad ground connection.

- Disconnect the crankshaft sensor (follow sensor wire from the transmission bell housing on the driver side). Reconnect. That's a common cure.

- Disconnect the distributor signal wire connector. Reconnect.

- After that, it gets more detailed, so try these and tell if it works or identifies the problem. Then go from there.

Skipc