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

lt1 fuel pressure bleeding down

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Old May 15, 2012 | 04:52 PM
  #21  
F0x Slaughter's Avatar
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I know you said the setup ran before but did you keep the same sized injectors that are in the tune?

Also do you have constant spark?
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Old Jun 12, 2012 | 10:47 AM
  #22  
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Did you ever figure out the problem?. I'm having the same issue with my 97 Z28
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Old Jul 11, 2012 | 10:13 PM
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Yes, the fuel pressure regulator would stick closed causing the fuel pressure to build to 85+ psi and it was blowing past the injectors. New FPR and plugs fixed it.
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