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1966 GMC Sierra 6.5 turbo desiel

Tiny
GYOUNG
  • MEMBER
  • 1996 GMC SIERRA
  • V8
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
This truck ran out of gas. I replaced glow plugs. Eng. Turns over okay; but won't start. Is there a engine shut off switch or soleniod that works when truck runs completely out of fuel? I have bled fuel and pumps out clear. Turns oevr like crazy; but will not run. Can you please help me on this? I have worked on gas engines; but desiel's are new to me. Thanks.
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Thursday, May 12th, 2011 AT 8:19 PM

4 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Try loosening injector lines at injectors and see if fuel is present.
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Friday, August 12th, 2011 AT 2:50 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
The info I looked at was for 96, I saw two different model years? I'm not trying to argue, just want everybody to be safe. The high pressure from the injection pump is dangerous, could be a few thousand psi, nothing to fool with. If you want to check that high fuel pressure, do it properly.
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Saturday, August 13th, 2011 AT 7:18 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
I'm almost sure that kind of pressure is only available at low volume. A loosened injector has a lot of volume available so almost no pressure. If you were to break 1 loose while the engine is running you might get a high pressure jet for a micro sec. I will say I personally have not done this on this motor myself.
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Monday, August 15th, 2011 AT 4:15 AM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
You may be correct. I don't get a chance to work on diesel very much.
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Monday, August 15th, 2011 AT 6:37 PM

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