OBD2 CODE READING PO300

2002 Chevrolet Truck

Tiny

sunnylexus

January, 20, 2013 AT 5:01 PM

Obd2 code reading po300. Engine lope on #3& 4 cyclinders. Change spark pluges-coil-injecters and wires.

FOUND 181 RELATED QUESTIONS

P0300

13 ANSWERS

How To Fix Dtc P0101&p0300

2 ANSWERS
5 IMAGES

1 Answer

Tiny

hmac300

January, 20, 2013 AT 6:05 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

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