fuel pressure


Asked by Feb 10, 2016 at 10:02 PM about the 1999 Chevrolet C/K 1500 LS 4WD

Question type: Maintenance & Repair

my 99 Chevy 5.7 is running rich when I turn my key on fuel press goes to
100psi and stays even when running then drops to 57psi when key is off

4 Answers


First thing to do is replace the fuel pressure regulator as this is a high fail item, then recheck the fuel system pressures. If they are still high then start looking for a restriction in the fuel return line.

Andrew Olsen

55-62 psi while running. That's way too high


thanks guys just got home going to dive in it ill let you know


got it all done ended up being more than just the pressure reg had a small crack at back of intake

Your Answer

Add photo

Related Questions

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 1,146 nationwide C/K 1500 listings starting at $2,400.


Search Chevrolet C/K 1500 Questions

Chevrolet C/K 1500 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,560
#2 John Saffrahn
John Saffrahn
Reputation 2,260
#3 Rowefast
Reputation 1,190
View All

Related Models For Sale

Used Chevrolet Silverado 1500"
2,380 Great Deals out of 143,345 listings starting at $1,195
Used GMC Sierra 1500"
1,028 Great Deals out of 55,963 listings starting at $2,400
Used Ford F-150"
3,177 Great Deals out of 215,801 listings starting at $1,000
Used Chevrolet C/K 2500"
279 listings starting at $1,995
Used Dodge Ram 1500"
540 Great Deals out of 13,899 listings starting at $995
Used Toyota Tacoma"
637 Great Deals out of 30,001 listings starting at $2,850
Used Chevrolet Tahoe"
1,043 Great Deals out of 36,533 listings starting at $1,695
Used Chevrolet S-10"
7 Great Deals out of 1,822 listings starting at $1,749
Used Chevrolet C/K 3500"
304 listings starting at $5,600
Used Chevrolet Camaro"
812 Great Deals out of 39,041 listings starting at $2,650

Used Cars For Sale