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> Way too much gas, 73 1.7 with FI
EJP914
post Jun 24 2026, 09:10 AM
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hello!
Looking for some ideas on why the spark plug electrodes are wet with gas after running the car for only about 20-30 seconds. Something is causing way too much fuel into the engine. Car starts at the turn of the key, but stumbles and runs rough. Exhaust smells like gasoline.

I have checked, replaced, or installed known good parts.
New plugs, points, condenser.
Cleaned trigger contacts. Distributer other wise works as it should.
Swapped in known good relay board and relays
Swapped in known good ECU.
Installed new fuel injectors, Standard Mfg type.
Fuel line pressure at 25 lbs.
Swapped in “adjusted” MPS. (Maybe still too rich?)
Timing is good but not spot on.

I have not yet checked CHT sensor or cold start valve (may be stuck open?). Not sure what else to check? I have never seen this much gas get pumped into an engine.
I would very much appreciate any advice and/or guidance. Thanks.

EJP914
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brant
post Jun 24 2026, 09:43 AM
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CHT and mps failure both cause excessive rich conditions
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