lapisxj
NAXJA Forum User
- Location
- Huntsville, AL
On our 99 XJ (stock 4.0) we have an issue with it not starting. After a short drive and the vehicle has had time to warm up (like to work or store or something) let it sit for a bit (time it takes to get groceries, grab lunch, etc), come back out and it won't start. It will crank, has spark, and has fuel pressure (mid 40's psi). When it gets in this condition I can mash the pedal to the floor and crank on it for 5-10 seconds and eventually get it to fire up. It's worth noting that we do smell fuel while troubleshooting this condition. If you shut it down and crank it right back up it doesn't seem to have any issues doing so.
We had originally suspected a fuel pump problem but after hooking a gauge up and monitoring it for the past few days I don't think that's the case. How long should it hold fuel pressure in the rail and how would I test for a bad injector?
Throttle body is clean and most of the sensors on the TB are new/been replaced.
We had originally suspected a fuel pump problem but after hooking a gauge up and monitoring it for the past few days I don't think that's the case. How long should it hold fuel pressure in the rail and how would I test for a bad injector?
Throttle body is clean and most of the sensors on the TB are new/been replaced.