Stalling out

Asked by GuruTZ12 Apr 02, 2017 at 11:46 AM about the 2002 GMC Sierra 3500

Question type: Maintenance & Repair

My gmc 3500 will start up in the morning just fine. As I start
to drive after a few miles it loses all fuel and dies. Then I try
to start it and it just cranks and cranks and finally will start  
but it is very hard to keep it running while driving. I've
cleaned the throttle body and replaced the front gas tank
fuel pump. Also put on new plugs an d wires

1 Answer
223,965

Rowefast answered 7 years ago

You should do a fuel pressure bleed down test. Hook up a fuel pressure gauge to the Schrader Valve, build up fuel pressure on the gauge, should be 56 to 63 lbs, then turn the key off. Watch the fuel pressure gauge to see if it drops in pressure, It should not drop down more than 5 lbs. in three minutes. If it does then there is a problem with leaky fuel injectors. Check the fuel pressure regulator, pull the vacuum line off to make sure it is not leaking.

Mark helpful

Your Answer:

Related Questions

Shortcuts

Search GMC Sierra 3500 Questions

CarGurus Experts

  • #1
    Jaime Moreno
    Reputation
    130
  • #2
    Courier_608
    Reputation
    70
  • #2
    outalne94z71
    Reputation
    70
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 2500HD
16 Great Deals out of 1,611 listings starting at $8,999
Used Ford F-350 Super Duty
41 Great Deals out of 2,652 listings starting at $8,995
Used Dodge RAM 3500
27 listings starting at $11,500
Used GMC Sierra 2500
2 listings
Used Chevrolet Silverado 2500HD
18 Great Deals out of 1,296 listings starting at $9,990
Used Chevrolet Silverado 3500
3 listings
Used Ford F-450 Super Duty
156 listings starting at $32,499

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. Content will be removed if CarGurus becomes aware that it violates our policies.