2001 Chevy Blazer fuel pump, regulator, or possibly spark p

2001 CHEVROLET BLAZER
80,000 MILES • 6 CYL • 2WD • AUTOMATIC
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BURGKEV2000
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  • 1 POST
My 2001 Chevy Blazer turns over but will not start. It is a V6 4.3L and:
-battery tested and is fine
-Fuses are good
-no audible sounds from fuel pump
My question is, could bad spark plugs be the culprit? (did not run rough, although every now and then would have to turn key twice to start it) OR could it be a bad regulator? Or fuel pump?
I cannot do a fuel pressure test since it will not start, only starts for a second with starting fluid
I would like to rule out at least one of these possible culprits so any help is greatly appreciated.
Jul 23, 2010 at 1:45 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
You can check fuel pressure, engine cranking. Check ecm B fuse. Not only check the fuse, check the circuit for voltage. You can also take the fuel pump connector loose, check for voltage on the gray wire, engine cranking. Black is ground, if you have good voltage and ground, with no pump action, I suspect the pump.
Jul 23, 2010 at 2:41 PM
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