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2000 Chevy S-10 fuel injectors

Tiny
BALL79
  • MEMBER
  • 2000 CHEVROLET S-10
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
2000 chevy s10 4.3 vortec. Injectors are not spraying. Checked
Everything spark, pressure, fuses. What could cause them not to work.
Tuesday, August 31st, 2010 AT 6:51 PM

19 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Is it the power side or the pulsing ground side that's missing?
Do you have spark?
Does your check engine light come on for bulb check when you turn the key on?

If it's a Vortec, how did you conclude that they weren't spraying?
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Tuesday, August 31st, 2010 AT 6:58 PM
Tiny
MADMIKE1735
  • MECHANIC
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Did you recently work on this vehicle, if so what exactly did u do.
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Tuesday, August 31st, 2010 AT 7:12 PM
Tiny
BALL79
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  • 9 POSTS
Well the truck has been sitting for 3 yrs before I bought it. I replaced the gas tank fuel pump injectors and crank sensor. Just put it all back together now its spitting and shuddering
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Tuesday, August 31st, 2010 AT 8:34 PM
Tiny
BALL79
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  • 9 POSTS
I was told to pull it apart and turn key to check the injectors. Also it will run with starting fluid.
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Tuesday, August 31st, 2010 AT 8:43 PM
Tiny
WRENCHTECH
  • MECHANIC
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What's your fuel pressure?
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Tuesday, August 31st, 2010 AT 8:45 PM
Tiny
BALL79
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Its pushing in the 55 range.
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Tuesday, August 31st, 2010 AT 8:49 PM
Tiny
WRENCHTECH
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  • 20,761 POSTS
That's not enough fuel pressure. 55 is about the bare minimum to run and sometimes not enough. 60 to 66 is the spec and it needs every bit of it.
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Tuesday, August 31st, 2010 AT 8:52 PM
Tiny
MADMIKE1735
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If it runs on starting fluid, it sounds like a definate fuel problem. I agree, check fuel pressure. If its low, remove fuel filter. You should beable to blow through it freely. If not, then its clogged badly, and needs to be replaced. Recheck fuel pressure. It should be in the 55-60 range
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Tuesday, August 31st, 2010 AT 8:53 PM
Tiny
WRENCHTECH
  • MECHANIC
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I don't think your not going to see 100 pounds out of this pump even dead headed. Peak will probably be about 70 to 75 dead headed. I suspect yours isn't even hitting 60.
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Tuesday, August 31st, 2010 AT 8:57 PM
Tiny
MADMIKE1735
  • MECHANIC
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After some research I discovered that this engines fuel pressure should be 55-60psi.
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Tuesday, August 31st, 2010 AT 9:01 PM
Tiny
WRENCHTECH
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No, the spec is Key On Engine Off 60-66 psi

and it was posted already.
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Tuesday, August 31st, 2010 AT 9:04 PM
Tiny
BALL79
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I change all and completely forgot the filter. I'm going to go pull it right now and check it and prolly just replace it tomorrow. Hey I really want to thank you guys a lot. This is an amazing site. Thanks again guy. I'll let u know what I find.
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Tuesday, August 31st, 2010 AT 9:07 PM
Tiny
BALL79
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  • 9 POSTS
Just pulled the filter took everything I had to blow through it. Pick up one in the morn see what happens. Its at 60 on pressure.
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Tuesday, August 31st, 2010 AT 10:43 PM
Tiny
BALL79
  • MEMBER
  • 9 POSTS
Update. Its running but very choppy. I've put a fuel pump, injectors, filter, and plugs. Everything is set right as far as pressures and wires. Any ideas on why its running so rough. Anything else I've overlooked. Thanks
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Wednesday, September 8th, 2010 AT 6:52 PM
Tiny
WRENCHTECH
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Any check engine light now?
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Wednesday, September 8th, 2010 AT 6:55 PM
Tiny
BALL79
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Yes lights on. Not sure if I can get a scanner or get it to a scanner.
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Wednesday, September 8th, 2010 AT 7:08 PM
Tiny
WRENCHTECH
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That's where you have to start
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Wednesday, September 8th, 2010 AT 7:10 PM
Tiny
BALL79
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  • 9 POSTS
Evap control system pressure sensor low. Is the code I got.
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Wednesday, September 8th, 2010 AT 8:29 PM
Tiny
WRENCHTECH
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When did you read that code?
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Wednesday, September 8th, 2010 AT 8:30 PM

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