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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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
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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