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96 chevy truck whith 5.7 vortec wont start fuel pump has pressure and spark plugs have power

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Have you performed a compression test ?

Posted on Aug 11, 2017

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Back to the basics, fuel, air, ignition, compression, timing. If one of those Things is off, it won't fire. Any recent modification or repairs?

Posted on Aug 11, 2017

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Posted on Jan 02, 2017

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SOURCE: 1999 chevy blazer wont start

THE FUEL PUMP IS BAD.

if your losing fuel pressure after the pump runs the drain back valve in the pump has failed.

and i doubt that you are seeing enough fuel pressure to run a vortec engine.

low fuel pressure equals a non running vortec

Posted on Apr 11, 2009

  • 102 Answers

SOURCE: Isuzu Hombre pickup, 2.2L Vortec, Won't Start.

You need four things for an engine to run. 1. fuel 2. spark 3. compression 4. timing (spark at the right time. By your post it seems you have fuel and spark and you probably have compression unless you blew a head gasket. That leaves the timing. Check the timing and/or the timing belt or chain whichever you have.

Posted on Aug 07, 2009

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SOURCE: fuel pump pressure specs

The fuel pump specs are 14 psi. and 20 gallons an hour.

Posted on Sep 08, 2009

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SOURCE: 96 gmc vortec will not start

I AM LOOKING AT TIMING ISSUES OR INTAKE MANIFOLD LEAK.OR EGR VALVE STUCK OPEN.

Posted on Dec 30, 2009

B-Roosky
  • 59 Answers

SOURCE: i am not getting power to my fuel pump

on a lot of ford products there is a switch that goes from the fuel pump to the inside of one of the bedsides.
what this is, is a shock switch that turns the fuel pump off if it absorbs a hit.
its a really dumb safety feature but its effective.
there is a red button on it that u have to press to make it active again.
sometimes they just trip for no reason.

Posted on Jan 11, 2010

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1 Answer

HaVE A 96 1500 PICK UP WITH V6 VORTEC, GETTING ONTO FWY TRUCK DIED. NOW IT WILL CRANK OVER, HAVE SPARK AND FUEL TO CARB. WONT START. IF I POUR FUEL INTO CARB IT WILL RUN. ANYIDEAS IAM SITTING ON FWY NOW


Sounds like you lost a fuel pump, although they usually don't quit while being driven. Have it towed and get a fuel pressure check. That vehicle has to have very close to 60 psi fuel pressure to run. Have a new fuel filter installed also. Plugged fuel filters are the most common cause of fuel pump failure.

Aug 17, 2011 | 2002 Chevrolet Silverado 1500

2 Answers

My jimmy wont start have 58 psi of fuel pressure good spark but the spider injection wont open to spary the fuel brand new 280 bucks for it have checked grounds two broken one fixed those still no start...


check your ecm-ign fuse.if it is ok check to see if you have power to your spider injector.if you have power, you either have a bad computer or a bad connection between the computer and the inj.do you have spark??.if you have no spark check your ign module or bad connection at the ign module.i have seen that before.

Feb 01, 2011 | 1993 GMC Jimmy

1 Answer

I have a 2001 chevy silverado 1500 with a 4800 vortec engine. it starts and idels fine but when ever i give it gas, the engine starts to sputter and dies. ive already changed the fuel filter and spark plug...


This sounds llike weak feul pressure, the fuelpump may need replacing, the first thing to do is have the fuel pressure tested and if the pressure is low then have the pump replaced. the pump is located inside the fuel tank and the tank will need to be dropped to replace the pump, good luck ,

Jan 01, 2011 | 2001 Chevrolet Silverado 1500

1 Answer

I have a 96 chevy blazer with a 4.3 vortec rough


Do a compression test on all of your cylinders when it is cold. Backfiring is a sign of a worn valve seat allowing mixed fuel and air (lit by spark) to be forced back into the intake. You will probably see compression loss on one or more cylinders.

Also... there is a chance that the EGR valve is not totally seated when the engine is cold with just a small blow by. The EGR valve seats coke up over time with black gunk.

Jan 28, 2010 | 1996 Chevrolet Blazer

1 Answer

Exprees van just cranks over


I would chech the ingition module inside the distributor. It's a little black box on the bottom(inside). I'm assuming you have the correct fuel presssure coming from the fuel pump.

Jan 17, 2010 | 1996 Chevrolet Express

1 Answer

I have a 98 k1500 with 5.7 350 and it wont start, has spark and fuel at the tbi but the injectors wont fire, will run on ether if sprayed down the tbi any ideas


have the fuel pressure checked ,im assuming it is a vortec,
you need about 55 psi continusly to keep it running, i have a 96 2500 sierra. the fuel pumps were known to be terrable in these trucks. i put a new one in, then had to remove it to replace it again amonth later, they are flawed by manufacturing design.

Dec 16, 2009 | 1998 Chevrolet K1500

1 Answer

1999 chevy blazer wont start


THE FUEL PUMP IS BAD.

if your losing fuel pressure after the pump runs the drain back valve in the pump has failed.

and i doubt that you are seeing enough fuel pressure to run a vortec engine.

low fuel pressure equals a non running vortec

Apr 11, 2009 | 1999 Chevrolet Blazer

3 Answers

1998 Chevy tahoe Hard to start when cold


replace your MAP sensor(manifold absolute pressure) the map sensor is the computer for your fuel pressure regulator telling how much pressure. Unless your tahoe runs like **** going up hill than it inevitably your fuel pump

Feb 17, 2009 | 1999 Chevrolet C/K 2500

1 Answer

96 chevy 1500 suburban wont start


check the catalytic converter i had the same problem with my suburban and mine was a clogged converter.

Jan 19, 2009 | 1996 GMC Suburban

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