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P Codes (powertrain)
P0301 - P0399
OBD2 CODE READING PO300
2002 Chevrolet Truck
Obd2 code reading po300. Engine lope on #3& 4 cyclinders. Change spark pluges-coil-injecters and wires.
Sunday, January 20th, 2013 AT 5:01 PM
Check your fuel pressure it should be 60-66 psi at rail with key on if a small block. If big block 54-62 psi if pressure ok check for vacuum leak with choke spray
Sunday, January 20th, 2013 AT 6:05 PM
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