Engine turns over but will not crank. Checked related parts on 2001 Chevrolet Express 1500

Fuel pump works, fuel filter new, checked fuel test port (getting fuel), new spark plugs spark, iginition coil works. Replaced dist cap and rotor. Equipped with SFI system but testing is limited. Cannot verify fuel presence in ports. No known fuel system fault at this time.

by in Sumter, SC on January 12, 2013
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1 answer 2 comments
ANSWER by , January 12, 2013
Check for ignition fire at the plugs and fuel pressure at the test port with a gauge!!
COMMENT by , January 12, 2013
Thanks. First fuel presure test seemed ok. Used different guage and verified pressure was only 50psi, needs 60-65psi. Replaced pump.
COMMENT by , January 12, 2013
Common problem with GM.