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Raylo · 04-08-2008, 04:17 AM

Vince,

Did you ever determine the actual fuel pressure specs for your car? I had a problem with my 4.3 L S10 CPI where the fuel pump didn't fail outright but wouldn't put out full pressure. The FP specs on that motor are pretty high and if the pressure is 15 psi low, like what I had, you get a no start. That one was a bear to diagnose because I could hear the pump running and discounted it as the problem, until I actually looked at the specs. Getting a gas tank off a truck is a lot easier than a Camaro, though. I can't wait until my Z28 FP dies. <fingers crossed>

So, yes, get a noid light to check injector operation. But you really need to find the fuel pressure specs for your setup. Haynes manual or similar should have it.

04-08-2008, 04:17 AM	#47 (permalink)
Raylo Registered User Join Date: Feb 2006 Location: Maryland, USA Posts: 292 OS: XP Desktop, Vista HP Notebook, XP Notebook	Re: 1991 camaro rs v6 3.1 wont start Vince, Did you ever determine the actual fuel pressure specs for your car? I had a problem with my 4.3 L S10 CPI where the fuel pump didn't fail outright but wouldn't put out full pressure. The FP specs on that motor are pretty high and if the pressure is 15 psi low, like what I had, you get a no start. That one was a bear to diagnose because I could hear the pump running and discounted it as the problem, until I actually looked at the specs. Getting a gas tank off a truck is a lot easier than a Camaro, though. I can't wait until my Z28 FP dies. <fingers crossed> So, yes, get a noid light to check injector operation. But you really need to find the fuel pressure specs for your setup. Haynes manual or similar should have it.