2001 Corvette LS1 with long crank
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2001 Corvette LS1 with long crank car is bone stock except for cat back.
Long crank ONLY occurs when the gas tank is quarter or less and the car is cold. If the car is warm it starts fine. If the tank is more than quarter and cold or warm it starts fine.
No codes. Easy stuff replaced ie plugs, wires, fuel pump, fuel filter/regulator, MAF, no vacuum leaks, etc. same issue
any thoughts would be greatly appreciated.
Long crank ONLY occurs when the gas tank is quarter or less and the car is cold. If the car is warm it starts fine. If the tank is more than quarter and cold or warm it starts fine.
No codes. Easy stuff replaced ie plugs, wires, fuel pump, fuel filter/regulator, MAF, no vacuum leaks, etc. same issue
any thoughts would be greatly appreciated.
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I doubt its bleeding off as you crank it, long as the pump is staying on. Might look at the ground and power connections. Make sure the pump is working as you crank it and the injectors are firing.
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how would I test If an injector is bad? (But again I don’t see how an injector would fail just overnight and be fine the rest of the time)
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I was thinking more along the lines of high current draw and potentially corroded electrical connections dropping voltage at the injectors and/or pump and preventing enough fuel from getting in when its needed. Injectors need a lot of power during a cold start and if voltage drops because of a poor ground or 12v connection as the fuel line is being filled by the pump, they might not open enough. Can't say I have a magic solution, but that's what immediately comes to mind.
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I was thinking more along the lines of high current draw and potentially corroded electrical connections dropping voltage at the injectors and/or pump and preventing enough fuel from getting in when its needed. Injectors need a lot of power during a cold start and if voltage drops because of a poor ground or 12v connection as the fuel line is being filled by the pump, they might not open enough. Can't say I have a magic solution, but that's what immediately comes to mind.
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Well If you installed it correctly and didn't tear the o ring upon installation, I would look at the pump. If the supply line has even a pin hole in it, it will bleed of the pressure and cause a long crank.
I had this issue on one of my vehicles below 1/2 tank. When I Finally pulled the pump the corrugated supply line had a pin hole and was wizzing fuel out.
I had this issue on one of my vehicles below 1/2 tank. When I Finally pulled the pump the corrugated supply line had a pin hole and was wizzing fuel out.