Mrdjflores
Proven Member
- 35
- 1
- Jul 10, 2016
-
Louisville,
Kentucky
Engine starting puzzle
First let me say that i'm new to Eclipses and the 420A engine. I'm not new to cars and fuel injection. My project car is a 95 Eclipse RS, A/T (going to be my daughter's first car) Car started and ran okay when i got it, had bad rings and low compression. so continued on to do a complete engine rebuild. Now the engine is back in it's happy home, but have come across a starting problem. At first, the engine ran good, then mysteriously quit running (long story short, out of fuel...DOH...) Put gas in it and it fired it up hence the following: 1)Started, ran rough, found #4 injector leaking - replaced all injector O-rings 2)Started, ran rough, found Fuel line inlet leaking - replaced O-Ring 3)started, ran rough, started checking plugs and connectors - engine died 4)Now won't start.... Here is what I know: *getting a little over 40psi at the fuel rail when cranking. *fuel getting into cylinders (fouling out the plugs) *getting spark at coil packs and spark plugs (seems a little weak for a spark) *Tested CAS (only get 9v at harness, others tests okay) *Tested TPS - good *Tested IAC - good, but going to retest off engine *Tested MAP - good *Tested Engine Coolant Sensor - good (have to wait for better weather to test CPS and Knock Sensor) *Double checked timing belt and alignment - good *Replaced spark plugs again, and gap accordingly I have a replacement ECU on the way. I'm also beginning to suspect fuel pump again, maybe it can build up the pressure but not deliver the volume?? I vaguely remember hearing the fuel pump prime when you just turn the key on, but now i don't, but does build pressure when cranking. Any thoughts?? Anything I obviously missed?? thanks, Dan
First let me say that i'm new to Eclipses and the 420A engine. I'm not new to cars and fuel injection. My project car is a 95 Eclipse RS, A/T (going to be my daughter's first car) Car started and ran okay when i got it, had bad rings and low compression. so continued on to do a complete engine rebuild. Now the engine is back in it's happy home, but have come across a starting problem. At first, the engine ran good, then mysteriously quit running (long story short, out of fuel...DOH...) Put gas in it and it fired it up hence the following: 1)Started, ran rough, found #4 injector leaking - replaced all injector O-rings 2)Started, ran rough, found Fuel line inlet leaking - replaced O-Ring 3)started, ran rough, started checking plugs and connectors - engine died 4)Now won't start.... Here is what I know: *getting a little over 40psi at the fuel rail when cranking. *fuel getting into cylinders (fouling out the plugs) *getting spark at coil packs and spark plugs (seems a little weak for a spark) *Tested CAS (only get 9v at harness, others tests okay) *Tested TPS - good *Tested IAC - good, but going to retest off engine *Tested MAP - good *Tested Engine Coolant Sensor - good (have to wait for better weather to test CPS and Knock Sensor) *Double checked timing belt and alignment - good *Replaced spark plugs again, and gap accordingly I have a replacement ECU on the way. I'm also beginning to suspect fuel pump again, maybe it can build up the pressure but not deliver the volume?? I vaguely remember hearing the fuel pump prime when you just turn the key on, but now i don't, but does build pressure when cranking. Any thoughts?? Anything I obviously missed?? thanks, Dan
