Will crank - wont start

Tiny
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  • MEMBER
  • 2003 CHEVROLET SILVERADO
  • 140,000 MILES
2003 Chevy truck wont start. Have replaced the ignition coil, crankshaft position sensor and air mass sensor. Had the ignition module checked - it was ok. Poured gas down throttle body but still will not start. Cranks over and over.
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Wednesday, October 12th, 2011 AT 12:42 AM

13 Replies

Tiny
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  • EXPERT
Did you check the fuel pressure? It has to be 60 lbs. I would look at that before throwing any more parts at it.

Roy
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Wednesday, October 12th, 2011 AT 12:47 AM
Tiny
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I have not checked the fuel pressure. How would I do that?
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Wednesday, October 12th, 2011 AT 12:55 AM
Tiny
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You need a gauge and hook it up to the port. It must be 60 lbs or better.

Roy
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Wednesday, October 12th, 2011 AT 12:59 AM
Tiny
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Ok - have quit for the night. Letting battery recharge. Will check in the morning. Thanks so much!
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Wednesday, October 12th, 2011 AT 1:08 AM
Tiny
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Good luck
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Wednesday, October 12th, 2011 AT 1:13 AM
Tiny
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Ok - its driving me insane so I walked out and listened for the fuel pump. I heard it prime. Poured gas down the throttle body - still not turning on. Wouldnt it start with me pouring gas down the "carb"? Even tried starting fluid - still nothing.
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Wednesday, October 12th, 2011 AT 2:01 AM
Tiny
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Yes it would. Most likely you are missing spark. That will be more difficult to diag. A scan tool will be required to help for that. It could be a crank sensor.

Roy
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Wednesday, October 12th, 2011 AT 2:20 AM
Tiny
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Thats what I thought. Hence my problem. The crankshaft sensor was changed today along with the ignition coil and mass air sensor. Had the ignition module checked and it passed Checked for spark at the coil and the plug - both there.
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Wednesday, October 12th, 2011 AT 2:43 AM
Tiny
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If you have spark and fuel, it should run. Does the check engine light light up when you turn on the key?

Roy
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Wednesday, October 12th, 2011 AT 2:59 AM
Tiny
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Yes - I will be checking the codes tomorrow. Don't have an ODB-II tonight.
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Wednesday, October 12th, 2011 AT 3:00 AM
Tiny
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Ok
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Wednesday, October 12th, 2011 AT 3:04 AM
Tiny
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Ok - checked codes and had none. Decided to go ahead and change cap, rotor, cables and plugs. Reset computer and charged battery. Low and behold - it started. Ran rough for a little bit but settled out and now runs great. Want to thank you for your help! You guys are awesome!
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Wednesday, October 12th, 2011 AT 11:14 PM
Tiny
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Thanks, good luck
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Wednesday, October 12th, 2011 AT 11:20 PM

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