"I have a 91 Silverado 5.7 EFI that wouldn't start , cranked but wasn't squirting gas into TB. This was intermittent at first. Is there any part of the fuel system that would keep the injectors from firing intermittently. I have 15 psi on the fuel line and I just rebuilt the press regulator. If I keep trying it will eventually start but I tested it and it's definitely not squirting fuel when it won't start. Now it's more frequent and sometimes dies when put into gear( not a trans issue I'm pretty sure). I've replaced the coolant sensor and the ign module , also as I said rebuilt the press regulator. Can't figure why when it dies , it won't start back up because no fuel squirting from injectors . Then it will . Any help appreciated ! I am a mech and I'm trying to not throw parts at it!"

Asked by Mar 21, 2017 at 12:25 PM about the Chevrolet Silverado 1500

Question type: Maintenance & Repair

1 Answer

78,035

15 lbs fuel pressure might be too much. It should be 9 to 13, so not that far off. I know when an injector gets too much fuel pressure it will not work. Another thing to check is if your are getting an injection pulse to the connectors. Finally, you may have plugged or faulty injectors.

Your Answer

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    2,920
  • #2
    Rowefast
    Reputation
    2,140
  • #3
    Andrew Olsen
    Reputation
    1,870
View All

Related Models For Sale

Used GMC Sierra 1500
202 Great Deals out of 10,758 listings starting at $1,775
Used Ford F-150
611 Great Deals out of 8,959 listings starting at $1,995
Used Chevrolet Silverado 2500HD
18 Great Deals out of 1,272 listings starting at $3,998
Used Dodge Ram 1500
35 Great Deals out of 460 listings starting at $3,488
Used Toyota Tundra
37 Great Deals out of 1,430 listings starting at $5,871
Used Toyota Tacoma
37 Great Deals out of 1,236 listings starting at $4,444
Used Ram 1500
409 Great Deals out of 26,923 listings starting at $2,000
Used Chevrolet Tahoe
7 Great Deals out of 819 listings starting at $4,200
Used Chevrolet Colorado
35 Great Deals out of 2,189 listings starting at $1,999
Used Ford F-250 Super Duty
27 Great Deals out of 658 listings starting at $1,790
Used Chevrolet Camaro
916 listings starting at $12,498
Used GMC Sierra 2500HD
28 Great Deals out of 1,346 listings starting at $3,600
Used Chevrolet Silverado 1500HD
5 listings starting at $6,996
Used Nissan Titan
34 Great Deals out of 545 listings starting at $2,322

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.