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(Starting a separate thread for this to focus on the flooding).
When I pull the plugs and jumper the main pump, I can hear the gas gurgling into the cylinders. When I then turn the motor over I might get a cup squirting out of the 4 cylinders. Trying to start it with the spark plugs in, it hydrolocks.
What I don't get is how that much gas can be forced through the injectors. I assume the ECU is sending a cold-start signal - perhaps reading a failed ECT - to the injectors. Or the pump is in hyper-molto-pressure mode.
Tomorrow I'll pull an FPR from a working car and install on this one. I'll also try reading pin 2 on the ECU. I have a spare ECT but given that it could be a short in the wiring somewhere, the car will just go into the barn for parts.
What I've done so far (used parts excapt as noted) & notes:
- 3 FPRs; return line to tank is open
- plugs, wires, dist cap, rotor (new)
- timing belt - old one was off 1-2 teeth, tensioner was weak
- Power Stage
- AMM & hose to TB
- Main fuel pump, relay, filter
- injectors - whith them out and pressured up, no leaks
- Ign control module
- Car has the 951 ICU already
- O2 sensor (new)
- Removed the cold start valve (before I saw it had a 951)
- compression is ~ 160 psi on each cyl
- cleaned battery cables & grounds.
- no vacuum leaks found
After I changed the O2 sensor, the flooding stopped. I could then get it to run for spurts firing on cyl #4 only. Turned out I'd used up the gas I'd put in. I added 2-gal more and the flooding was back.
(It had been parked for 3-5 years after it quit running - bad fuel pump suspected)
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240 drivers / parts cars - JH, Ohio
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