Hi all,
I have a '93 Wrangler YJ 4.0L (automatic transmission), and I'd like help diagnosing it. Here's what I've observed so far:
Thanks in advance!
I have a '93 Wrangler YJ 4.0L (automatic transmission), and I'd like help diagnosing it. Here's what I've observed so far:
- I started it recently and drove it a short distance. About an hour later, it would turn over but not start.
- It turns over just fine every time, so the starter system seems good. 12.5V at the battery
- I think it has good spark - I disconnected the spark plug wires from 2 of the spark plugs and confirmed spark on both of them (they were the easiest to get to), and I also disconnected the spark plug wire from the ignition coil at the distributor and confirmed good spark there.
- With a fuel pressure tester connected to the Schrader valve on the fuel rail, I measured about 40 psi while cranking. In my online research it seems like this is about right?
Thanks in advance!