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1997 Chevy S-10

Tiny
BOBBING
  • MEMBER
  • 1997 CHEVROLET S-10
1997 Chevy S-10 6 cyl Four Wheel Drive Manual

I was driving my truck when it sputtered then stalled. Now it will no longer start

97 S10 4.3L Vortec W code

I can hear the relay click and the pump priming the system. The engine turns over but will not start. I am getting spark at the plug. I smell fuel on the spark plug. I have replaced the ignition module. Fuel injection system is 2 years old. Fuel filter is 2 years old also. Fuel pump is a Delphi that I replaced 15 months ago.
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Wednesday, November 3rd, 2010 AT 2:47 PM

9 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
If you have the spider fuel system, I'd use a gage and check fuel pressure. 60--66 psi, key on engine off. Check compression. Any applicable trouble codes? If you have fuel and spark in the right amounts and the timing is ok, it should hit a little? Just my opinion.
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Wednesday, November 3rd, 2010 AT 3:01 PM
Tiny
BOBBING
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I am going to go buy a Pressure gage and a fuel filter.
I have no codes stored. Compression was good last time I checked. Timing is computer controlled, by the crank and cam sensor.
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Wednesday, November 3rd, 2010 AT 3:59 PM
Tiny
JDL
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I was talking about valve timing in reference to compression, not spark. Make sure there is no fuel pressure before taking any lines loose.
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Wednesday, November 3rd, 2010 AT 4:08 PM
Tiny
BOBBING
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I tested the fuel pressure and I got a reading of 57 psi.
Is that high enough? Manual says I need 60-66 psi.
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Wednesday, November 3rd, 2010 AT 7:52 PM
Tiny
JDL
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Was that reading key on engine off? That pressure may cause an extended crank? You might cycle the key on and off two or three times before you crank, see if it helps? After it is running, it will run on less pressure than 60--66.
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Thursday, November 4th, 2010 AT 9:14 AM
Tiny
BOBBING
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That reading was with the key on engine off.

I am thinking the crank or cam sensor is the culprit.
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Thursday, November 4th, 2010 AT 10:46 AM
Tiny
JDL
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If they are not in sync, might cause an issue? Otherwise, I don't think so.
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Thursday, November 4th, 2010 AT 11:21 AM
Tiny
BOBBING
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  • 11 POSTS
Its fixed.

The coil was the culprit. It had a problem in the secondary winding and was not providing enough voltage for a good enough spark to ignite the fuel.
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Friday, November 5th, 2010 AT 12:01 AM
Tiny
JDL
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Glad you got it going your way.
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Friday, November 5th, 2010 AT 8:54 AM

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