LT1-LT4 Modifications 1993-97 Gen II Small Block V8

No start problem: No fuel or spark

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Old 03-04-2009, 01:16 AM
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Default No start problem: No fuel or spark

Hey I need help getting my car running ASAP. I am not getting any fuel pressure or spark to the plugs. My fuel pump is priming when I turn my key though. It turns over just fine also. Could it be the ICM? The coil and opti are both new, along with the plugs and wires. The only part I did not buy was an ICM. I checked all of the fuses/relays. This problem occurred before I changed out these components.
Old 03-04-2009, 02:32 AM
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Originally Posted by DBurgLT1
Hey I need help getting my car running ASAP. I am not getting any fuel pressure or spark to the plugs. My fuel pump is priming when I turn my key though. It turns over just fine also. Could it be the ICM? The coil and opti are both new, along with the plugs and wires. The only part I did not buy was an ICM. I checked all of the fuses/relays. This problem occurred before I changed out these components.
Did you hook up a fuel pressure gauge to the rail?
How did you test for spark?
Old 03-04-2009, 02:44 PM
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I hooked the fuel pressure gauge up to the schrader valve and primed the pump. I got a reading of zero. I checked for spark at the plugs.
Old 03-04-2009, 03:35 PM
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could be the ICM but not sure about the fuel tho
Old 03-04-2009, 03:52 PM
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Originally Posted by DBurgLT1
I hooked the fuel pressure gauge up to the schrader valve and primed the pump. I got a reading of zero. I checked for spark at the plugs.
Your pump is dead.
You may have a bad ICM, I would get it tested.
Old 03-04-2009, 05:51 PM
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The pump primed when I turned the key. I disconnected the fuel line that goes to the fuel pressure regulator and primed the pump and fuel came flying out so I do not think it is the pump. I reconnected the fuel line and primed the pump again and check for fuel pressure and got zero.
Old 03-04-2009, 10:28 PM
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Originally Posted by DBurgLT1
The pump primed when I turned the key. I disconnected the fuel line that goes to the fuel pressure regulator and primed the pump and fuel came flying out so I do not think it is the pump. I reconnected the fuel line and primed the pump again and check for fuel pressure and got zero.
Your fpr may be bad.
Old 03-04-2009, 10:46 PM
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Ok. I didn't know the symptoms of a bad fpr but I guess I have them.



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