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Low Fuel Pressure

  

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Topic starter

Scotty,

I have a 1991 Pontiac Trans Am GTA with the L98 5.7L engine. It has approximately 49,000 miles all original. I recently had a problem with a cold start having to crank the engine at least 3 times to start it. When it did start it would give a low fuel pressure code (OBD I).  I have had the fuel pump and fuel filter replaced. The cold start is a little better but not like it used to be and I still get the low fuel pressure code on a cold start. What could be the issue?

Thank you

 


3 Answers
1

Since you changed the filter and pump, my next thought was fuel pressure regulator. Hope this helps.

https://www.doityourself.com/stry/7-symptoms-of-a-bad-fuel-pressure-regulator


Thank you.


1

Does it smoke at all when it starts? Somewhat less likely but if you have leaky fuel injectors it will bleed off pressure in the line otherwise I would definitely look into the fuel pressure regulator 


Thank you


0

Well you might have gotten a bad pump but the only other thing I can do would be the clogged fuel filter event fuel line or a bad fuel pressure regulator


Thank you for the help.


Watching your newest video now.


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