miss fire on number 2 cyclinder
jonesrsrg
09-14-2013, 04:33 PM
2002 trailblazer Ls 4.2 I scanned the codes and it was p0302 and it was number 2 cylinder miss fire can anyone help me figure out this problem.
Schurkey
09-14-2013, 11:30 PM
Poor compression
Fouled or worn spark plug
Defective ignition coil or ignition coil wiring
Defective ECM failing to drive ignition coil
Defective fuel injector or fuel injector wiring
Defective ECM, failing to drive fuel injector
I'd yank out the spark plug(s) for inspection and compression testing.
Will the coil fire an HEI-style spark tester?
http://www.amazon.com/dp/B0002STSBC/ref=wl_it_dp_o_pd_nS_ttl?_encoding=UTF8&colid=2VLYZKC3HBBDO&coliid=I7V84Q7FKSUDV
http://ecx.images-amazon.com/images/I/41a1zzxq6wL._SX342_.jpg
Fouled or worn spark plug
Defective ignition coil or ignition coil wiring
Defective ECM failing to drive ignition coil
Defective fuel injector or fuel injector wiring
Defective ECM, failing to drive fuel injector
I'd yank out the spark plug(s) for inspection and compression testing.
Will the coil fire an HEI-style spark tester?
http://www.amazon.com/dp/B0002STSBC/ref=wl_it_dp_o_pd_nS_ttl?_encoding=UTF8&colid=2VLYZKC3HBBDO&coliid=I7V84Q7FKSUDV
http://ecx.images-amazon.com/images/I/41a1zzxq6wL._SX342_.jpg
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