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I searched and read a handful of threads but still need a little help. Please read all details.
1994 Corvette LT1, manual, OBD1, owned it for six years/ 62k miles, catback installed before I got it, otherwise stock. About 112k miles on the chassis, 30k miles on the engine. Original engine, just rebuilt. New AC Delco opti at time of rebuild from a Chevy dealer. ICM and coil are original (but appear to be working per below).
I started it tonight after it sat for about 30 hrs (daily driver), made it to the top of my driveway, it stalled fairly abruptly, cranks but will not start. It will pop a bit here and there; it’ll fire a couple of times, but won’t start.
Fuel pressure is 40 psi key on, within +/-2psi of that during cranking, holds with zero bleed down at 1min, and 2psi bleed down at 5 min.
Pulled the plug wire on cylinder 3 and connected a spark tester. Good blue spark at a regular rhythm.
Checked all fuses and found an interior lighting fuse and the air pump fuse were blown. Still no start.
Will not start on ether.
Opti appears to be dry from what little of it I can see.
No harnesses or vacuum hoses appear damaged or disconnected.
No codes (checked by jumpering pins 4 and 12).
I have neither an FSM nor scan tool.
For full disclosure it has been developing an exhaust leak over the last few weeks, not 100% where, but sounds and looks (soot) to be one of the joints by the X pipe (after all O2 sensors). I have been waiting until I get my welder back from repair (it’s always something) to address that. An inspection of the exhaust system does not reveal any holes, thru rust, or damage. I do not believe that anything has changed on the exhaust in the 100’ I drove it, and do not believe that it is causing the no start condition.
Thank you for any help you may be able to provide, I appreciate it.
1994 Corvette LT1, manual, OBD1, owned it for six years/ 62k miles, catback installed before I got it, otherwise stock. About 112k miles on the chassis, 30k miles on the engine. Original engine, just rebuilt. New AC Delco opti at time of rebuild from a Chevy dealer. ICM and coil are original (but appear to be working per below).
I started it tonight after it sat for about 30 hrs (daily driver), made it to the top of my driveway, it stalled fairly abruptly, cranks but will not start. It will pop a bit here and there; it’ll fire a couple of times, but won’t start.
Fuel pressure is 40 psi key on, within +/-2psi of that during cranking, holds with zero bleed down at 1min, and 2psi bleed down at 5 min.
Pulled the plug wire on cylinder 3 and connected a spark tester. Good blue spark at a regular rhythm.
Checked all fuses and found an interior lighting fuse and the air pump fuse were blown. Still no start.
Will not start on ether.
Opti appears to be dry from what little of it I can see.
No harnesses or vacuum hoses appear damaged or disconnected.
No codes (checked by jumpering pins 4 and 12).
I have neither an FSM nor scan tool.
For full disclosure it has been developing an exhaust leak over the last few weeks, not 100% where, but sounds and looks (soot) to be one of the joints by the X pipe (after all O2 sensors). I have been waiting until I get my welder back from repair (it’s always something) to address that. An inspection of the exhaust system does not reveal any holes, thru rust, or damage. I do not believe that anything has changed on the exhaust in the 100’ I drove it, and do not believe that it is causing the no start condition.
Thank you for any help you may be able to provide, I appreciate it.