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> Sudden strange starting issue, The plot thickens
emerygt350
post Aug 20 2025, 02:45 PM
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The past two days, cold start took longer than normal. Cranked maybe 8 times before starting. This morning it took twice that, and now all of a sudden at the grocery store after starting just fine at my office (3 block drive, engine never even got warm). It will sounds like it's going to catch but doesn't. Definitely smell gas, but not gassy. More like spark issue. I checked the wires to the coil, all seemed fine. Have not done any work on the engine for weeks. Since it happened in a busy parking lot I couldn't tell if the pump was running. Got it started, drove home 3 blocks. Starts right up again no problem.

This isn't going to be cool at Watkins glen in two weeks. I need to figure this out.

I'm thinking it's wiring to the coil. God I hope it's not the fuel pump. Next time I will have to juice it with some fluid to see if it's fueling. I don't want to put my fuel pressure gauge back in there if I don't have to.
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emerygt350
post Aug 21 2025, 08:26 AM
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Fuel pump is working.
Put on the fuel pressure gauge and I have 30lbs like normal with the pump jumpered.
Checked spark, a little weak but not awful.
Checked it at the coil and pulled a plug and verified spark at the plug.
Tps causes injectors to fire.
Disconnected TPS same crank but no start
Replaced ecu with my other known good and no change
Cleaned all grounds at the back.
Cleaned all relay and sockets on the relay board
Verified voltage at the coil (drops to 9.5 when cranking)
Replaced coil with known good original Bosch, no change
Cleaned rotor and dizzy
Only once did it fire at all during all my cranking this morning.

I really think this has all the feels of a loose wire.
Something that might make the injectors not fire?
I checked the wires to the 123 dizzy but all looks good.
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