MISFIRE error codes
#1
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Rep Power: 0 MISFIRE error codes
My 99 civic ex is idling rough, and the check engine light is flashing. It is throwing error codes P0300, P0301, P0302, and P1399. This all happened extremely abruptly.
I pulled spark plug wires while the engine was running, and cylinder 3 gave no appreciable change in performance. The engine got bogged down when removing the other three.
Should I start with a compression test on cylinder 3?
Start with cap and rotor or the entire distributor?
Can this be caused by valves or a head gasket?
Thanks
I pulled spark plug wires while the engine was running, and cylinder 3 gave no appreciable change in performance. The engine got bogged down when removing the other three.
Should I start with a compression test on cylinder 3?
Start with cap and rotor or the entire distributor?
Can this be caused by valves or a head gasket?
Thanks
#2
If you think a good mechanic is expensive, try hiring a bad one
Re: MISFIRE error codes
Should I start with a compression test on cylinder 3?
IF you are going to do a compression test, perform the test on all 4 cylinders. Unless #3 comes up empty during its test LOL
(Dynamic compression test: I can usually tell just by the sound of the engine cranking if a real compression test is warranted or not.)
Start with cap and rotor or the entire distributor?
When you pulled the plug wire off #3, was it sparking? Test.
Note: aftermarket reman distributors are crap.
Can this be caused by valves
or a head gasket?
Pulled spark plugs out to inspect yet? (you gotta pull all of them out for the compression test anyway)
What does #3 look like? What do the others look like?
Did this sudden poor running occur while you were driving along?
Or did it just start out running badly one morning? (mouse chewed injector wires? LOL)