LS1TECH - Camaro and Firebird Forum Discussion

I need an LT1 guru

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Old 02-16-2007, 06:54 PM
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Default I need an LT1 guru
Is this supposed to happen?

When it turn the key off, my fuel pressure goes from 40PSI to 0PSI.

Is that supposed to happen?
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Old 02-16-2007, 06:58 PM
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No, it should bleed down slowly. Maybe you have a bad fuel pressure regulator or check valve in the fuel pump. Does it take a while to start ?
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Old 02-16-2007, 11:21 PM
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she starts right up, but you can tell one cylinder isnt firing at all period.
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Old 02-17-2007, 11:16 AM
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Could also be a clogged open or cracked injector. The pressure should hold for at least 10 minutes.
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