Why won't it start!?! 96 sierra 5.7l vortec

Asked by Jaryd Oct 28, 2014 at 10:24 AM about the 1996 GMC Sierra 1500 K1500 SLT 4WD Extended Cab SB

Question type: Maintenance & Repair

I have a 96 Sierra 5.7l vortec, the
truck has 285k on it. I got it a year
ago an COMPLETELY. Re did all of
the rust new panels everywhere.
Paint ETc. It's beautiful. However it
sat for about a year I started driving
it and the intake gaskets went out.
Replaced them. Good to go. Drove
for another 400 miles had a slight
misfire in cyllinder 6. New plugs and
wires. And then while at a stop sign it
died. Started up died. Went a little
but no power at all. Died. Kept dying
then wouldn't start. Then it kept no
starting.
Put in a new fuel pump filter and
pressure reg. now it will start with
starting fluid but it's really rough then
dies. I have spark.. Any suggestions?

5 Answers
45,155

jamnblues answered 10 years ago

check the fuel system- injectors might be dirty, the gas tank might be dirty- when fuel sits, it starts gumming up- especially with added ethanol-

1 people found this helpful.
Mark helpful

Jaryd answered 10 years ago

Tank is clean, I put injector cleaner through it. It starts now, but dies. Have to turn the key on and off a few times and then it's golden. Fires up. Idle real rough then dies. I don't have a fuel pressure gauge. But when I pushed the nipple in on the line. It had nothing. No pressure at all? It fires up everytime if I turn the key on and off tho. And I tried "checking pressure" by pushing the nipple in again before starting. Still nothin. I'm at a complete loss. I though mate pump wasn't runnin after starting. Did a quick hard wire with some alligator clips and a jumper wire from the battery. Tried. Still no pressure and fires up the dies. Maybe reverse polarity on the pump? And it's running the fuel up the return line instead of the main line?

Mark helpful
980

saltcar answered 9 years ago

You really need to buy or borrow a gauge. Running or cranking should be 50-60 psi. If that leaks down soon after shutting it off, I'lll bet the injector spider regulator is leaking. Intake (just the top) needs to come off and install a new one. If you do this, make sure you use the re-designed one with solinoids at the tips

1 people found this helpful.
Mark helpful
120

jcesp answered 7 years ago

People Post a Problem, but Never the Final Solution ????? what is the Matter with people JAYD ???

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • Why won't it start!?! 96 sierra 5.7l vortec 5 Answers

    I have a 96 Sierra 5.7l vortec, the truck has 285k on it. I got it a year ago an COMPLETELY. Re did all of the rust new panels everywhere. Paint ETc. It's beautiful. However it sat for about a ye...

    1996 GMC Sierra 1500 K1500 SLT 4WD Extended Cab SB

    -

    Maintenance & Repair

  • 95 GMC Sierra 5.7L Won't Start/Dies? 1 Answer

    Hello everyone, I have a 1995 GMC Sierra V8 5.7L that won't start. Ocasionally it will fire up but it will die fast and even faster if you try to accelerate it. I'm pretty sure it's misfiring since ...

    1995 GMC Sierra 1500 C1500 SL Extended Cab LB

    -

    Maintenance & Repair

  • 96 GMC Sierra 5.7l crank no start 1 Answer

    I'm driving down the road in my 96 GMC Sierra 5.7 l and I lost all power very sporadic and it just died it started back up while coasting and I was just barely able to get it off the road into a pa...

    1996 GMC Sierra 1500 K1500 SL 4WD Extended Cab Stepside SB

    -

    Maintenance & Repair

  • Why GMC Sierra 1995 won't start? 1 Answer

    Turn key every thing works but starter won't turn not a sound. Battery good. Ground cable good.

    1995 GMC Sierra 1500 C1500 SL Standard Cab LB

    -

    Maintenance & Repair

  • My 96 gmc sierra does not idle right when I start it but levels out after and it smell like gas why? 2 Answers

    When I start it it takes around 5 to 10 seconds to idle right and it constantly smells like gas I wanna fix it but what's my problem?

    1996 GMC Sierra 1500

    -

    Maintenance & Repair

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 6,893 nationwide Sierra 1500 listings starting at $3,975.

Postal Code:

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,810
  • #2
    dragonflyoffshore
    Reputation
    11,740
  • #3
    John Saffrahn
    Reputation
    11,690
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
313 Great Deals out of 15,424 listings starting at $1,954
Used GMC Yukon
22 Great Deals out of 719 listings starting at $5,998
Used Dodge RAM 1500
7 Great Deals out of 73 listings starting at $4,000
Used Toyota Tacoma
51 Great Deals out of 1,040 listings starting at $8,708
Used Chevrolet Tahoe
16 Great Deals out of 717 listings starting at $5,995

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.