91 z28 tpi starts and dies quickly

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Jan 3, 2024 | 07:22 PM
  #1  
I replaced, pump, sending unit and filter. Car starts but won’t stay running. I turn key and security light turns off so I don’t think it’s vats. Any ideas?
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Jan 3, 2024 | 07:29 PM
  #2  
Re: 91 z28 tpi starts and dies quickly
Fuel pressure tested ? Original multec injectors ?
does it continue to run off starting fluid ?
injector pulse tested with a noid light ?
hot spark ? Has the car sat for along time?
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Jan 3, 2024 | 08:38 PM
  #3  
Re: 91 z28 tpi starts and dies quickly
[QUOTE=Tuned Performance;6521138]Fuel pressure tested ? Original multec injectors ?
does it continue to run off starting fluid ?
injector pulse tested with a noid light ?
hot spark ? Has the car sat for along time?[/QU]
it runs off starting fluid, I haven’t tested with a noid light. I’ll need to buy one of those. Not sure if original injectors.
it clearly sat for a long time
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Jan 3, 2024 | 08:42 PM
  #4  
Re: 91 z28 tpi starts and dies quickly
Even though fuel pump is new it could be tbi low pressure. Might wrong not defective .double check it.
if fuel pressure and injector pulse with a noid light. Contact southbay fuel injectors for a set of injectors. Stock grey body injectors fail over time with coil shorting. If the car has sat for years injectors stick shut.
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Jan 3, 2024 | 08:53 PM
  #5  
Re: 91 z28 tpi starts and dies quickly
Quote: Even though fuel pump is new it could be tbi low pressure. Might wrong not defective .double check it.
if fuel pressure and injector pulse with a noid light. Contact southbay fuel injectors for a set of injectors. Stock grey body injectors fail over time with coil shorting. If the car has sat for years injectors stick shut.
thank you
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