Hard Starting
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1st Gear
Joined: Dec 2004
Posts: 1
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Hard Starting
I recently replaced my starter on my 1995 LT1. The car used to start almost instanlty. Now it takes a lot of cranking. When the engine fires it misses for a few moments. I can't see the starter replacment as anything but a coincidence. Any thoughts? Any remidies?
Thanks
Thanks
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
The first place I would start is with fuel pressure. When the key is turned, the fuel pump should activate for about 2 seconds and pressurize the system to 35-40 psi. This is accomplished by the fuel pressure relay activating and turning the pump on. After start up there is a oil pressure operated switch which closes and keeps the pump going. If the relay does not operate, you would need to crank for a while to raise the oil pressure enough to activate the switch to bring the fuel pressure up so the injectors would have enough to start the engine.
So the first thing you want to do is turn the key to only on, and listen in the rear for the pump to run. Doing this test with a fuel pressure gauge is actually the best way to do it if you have one.
If it runs good, probably not a fuel filter, injector or loose wire.
This is just a good starting point, see how you make out up to this point.
So the first thing you want to do is turn the key to only on, and listen in the rear for the pump to run. Doing this test with a fuel pressure gauge is actually the best way to do it if you have one.
If it runs good, probably not a fuel filter, injector or loose wire.
This is just a good starting point, see how you make out up to this point.
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
This engine uses a opti-spark for a distributor. There is no timing to set. The PCM (power control module) is a computer actually which basically takes all the inputs from which it senses and make all timing adjustments for a wide range of operating conditions. If some input did some how affect timing, the engine would probably run bad and that does not seem to be the case.
There is many other things that could be checked like pulses to the injectors which the PCM drives. But you got to start at some logical correct place if the cause is going to be found.
There is many other things that could be checked like pulses to the injectors which the PCM drives. But you got to start at some logical correct place if the cause is going to be found.
