My 93 GMC Sierra 4

Tiny
666CHUCK666
  • MEMBER
  • 1993 GMC SIERRA
  • 290,000 MILES
My 93 gmc sierra 4.3 ran out of gas and I put new gas into it and now it will not start, I checked the spark and it is getting fuel to the throttle body, it turns over about 10 times and then it wants to start but wont. Then try it agan about another 10 times and wants to start but wont. What could be the problem?
Thursday, December 20th, 2012 AT 11:06 PM

8 Replies

Tiny
FREEMBA
  • MECHANIC
  • 1,152 POSTS
Is the fuel spraying outof he throttle body injectors when you are cranking it over?

Check one of the spark plugs for fuel fouling.

Get back to me on the results.
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Thursday, December 20th, 2012 AT 11:14 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Running out of fuel destroys a fuel pump as fuel is the lube for the pump motor.

Most likely will need a new pump.

Roy
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Thursday, December 20th, 2012 AT 11:16 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Its sounds more like the fuel pump is fried due to lack of cooling, overheated and burned-up-I recommend don't wait for the low fuel level light to come on-fill it and keep going-
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Thursday, December 20th, 2012 AT 11:46 PM
Tiny
666CHUCK666
  • MEMBER
  • 7 POSTS
Its getting fuel up to the throttle body and the #1 plug is a little wet with fuel
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Friday, December 21st, 2012 AT 12:08 PM
Tiny
666CHUCK666
  • MEMBER
  • 7 POSTS
And the fuel pump works fine I here it kicking in
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Friday, December 21st, 2012 AT 12:12 PM
Tiny
666CHUCK666
  • MEMBER
  • 7 POSTS
Ileft it sit over night and tryed it agan today it sounds like it wants to start better then yesterday I took the plugs out and dryed them off and cleaned then gave it an oil change but still no luck I ! Anny more ideas annyone?
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Friday, December 21st, 2012 AT 6:48 PM
Tiny
666CHUCK666
  • MEMBER
  • 7 POSTS
Thanks everyone for the ideas it was the spark plugs
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Friday, December 21st, 2012 AT 10:33 PM
Tiny
FREEMBA
  • MECHANIC
  • 1,152 POSTS
Glad you got it fixed.

Just for the record;
Simply becase a vehicle runs out of gas does not mean that the fuel pump is fried. People have been saying that for years. I personally have had a few vehicles to run out of gas (over the years) and never had a fuel pump to fail because of it. (Not saying that it never happens. But not as often as some will say). I would wager that more often that not people who have ran out of gas still found their fuel pumps were working once they put gas in the tank.
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Monday, December 24th, 2012 AT 3:15 AM

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