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Username Post: Fuel Pressure Specs        (Topic#364773)
Dedicated Member
Posts: 6515
Age: 59
Loc: Kansas
Reg: 02-16-03
03-30-21 09:43 PM - Post#2817162    

I have a 2009 Silverado 1500 5.3. Been looking everywhere and cant find solid information on what fuel pressure should be. I have 62 psi KOEO and 46 psi idling. Having a start then almost dying condition on first start of the day.

Regards, Jeff

1998 K1500 6.5 Coal burner
1965 C10 with 498 BBC AFR Heads
1964 C10 Ran 348W for 6 years, now SBC.

Corvettes owned: '74 '77 '78 L82 Silver Anniversary, 2002 LS1, 2007 C6 Love this one!

Don't have a nervous come together!

Frequent Contributor
Posts: 2233

Loc: Lake George, NY
Reg: 11-11-15
03-31-21 12:13 PM - Post#2817208    
    In response to fritz1990

46 is too low.

Posts: 32
Loc: Mt. Holly, NC
Reg: 07-25-03
04-07-21 10:04 AM - Post#2817655    
    In response to fritz1990

I have a 2004 S-10 blazer with 4.3 and a 2007 Silverado with the 5.3. Both have 55 psi. I hade to replace the 4.3 pump last year, and the new pump has 55 psi also. Hope this helps.

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