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Author Topic: help- won't crank  (Read 2744 times)

Offline lawdog49

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help- won't crank
« on: October 30, 2009, 06:21:38 pm »
well, the Burb has been parked nose downward on an incline for about 3 weeks.  just went out to fire it up, and it won't crank- turns over but no fire or fuel.  i"m thinking no fire- but it has about 1/4 tank, could the pump somehow have lost it's prime if it wasn't submerged?  any other ideas??
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1991 GMC Suburban 1500   -   5.7/AT/4x4/TBI

Offline joesgarage71

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Re: help- won't crank
« Reply #1 on: October 30, 2009, 08:12:20 pm »
Prime the carb and try it
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Offline VileZambonie

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Re: help- won't crank
« Reply #2 on: October 30, 2009, 08:14:15 pm »
So it DOES crank then right?  ???

Do you hear the fuel pump? Try a shot of starting fluid and see if it fires.
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Offline lawdog49

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Re: help- won't crank
« Reply #3 on: October 30, 2009, 09:13:09 pm »
it does turn over- can't say that i've ever really noticed the pump make a noise like some do.  i wasn't sure if starting fluid could be used with the injectors.
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1991 GMC Suburban 1500   -   5.7/AT/4x4/TBI

Offline Lt.Del

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Re: help- won't crank
« Reply #4 on: October 31, 2009, 08:45:54 am »
Quote
crank- turns over but no fire or fuel.  i"m thinking no fire- but it has about 1/4 tank,

no fire, but you're thinking no fire?  

That's an easy check.  Ground a spark plug against the head and see if spark.  Can you look into the throttle body and see any fuel when cranking?
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Offline VileZambonie

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Re: help- won't crank
« Reply #5 on: October 31, 2009, 08:52:30 am »
Just to clarify some terminology:

If the engine cranks it means the starter motor cranks the engine.

So this should be described as the engine cranks (meaning it turns over) but won't run.

If you give it a shot of starting fluid and it starts you know your problem is fuel delivery. If it doesn't check for spark like sgtdel said.
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              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10
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