4.0L swap starting problem
Bucks86Renegade
Jeeper
- Posts
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- Location
- Middle TN
- Vehicle(s)
- Restoration in process:
4.0L I6, Aw4 tranny, D300 transfer case, Dana 44 rear axle, Dana 30 front axle, 4.09 gears;
Original color black with (soon to be) '86 blue decals (3 shades).
Using tub from an '89 Wrangler
Hello, I've been trying to get my Jeep started for a while now and was hoping someone who has done the 4.0L swap can help me diagnose why it isn't starting. Here's what I've got:
'93 Cherokee 4.0L engine, ECM and AW4 auto tranny with '93 engine harness and under-dash harness, E2000 fuel pump using the fuel lines (main and return) from a '93 Cherokee- all installed in a '86 CJ7 .
The engine turns over and will sometimes start and run for 1-2 seconds.
Fuel pressure at rail is at 40 psi, timing verified with a timing light.
I've checked my grounds with a tester light.
Here's my compression readings from cyls 1-6:
89, 155, 142, 170, 125, 123
I don't think that they're too low for it not to start, but tell me if I'm wrong.
Any ideas why it might not be starting would be appreciated. I'm out of ideas.
'93 Cherokee 4.0L engine, ECM and AW4 auto tranny with '93 engine harness and under-dash harness, E2000 fuel pump using the fuel lines (main and return) from a '93 Cherokee- all installed in a '86 CJ7 .
The engine turns over and will sometimes start and run for 1-2 seconds.
Fuel pressure at rail is at 40 psi, timing verified with a timing light.
I've checked my grounds with a tester light.
Here's my compression readings from cyls 1-6:
89, 155, 142, 170, 125, 123
I don't think that they're too low for it not to start, but tell me if I'm wrong.
Any ideas why it might not be starting would be appreciated. I'm out of ideas.