2000 Chevy Blazer 4.3 P0303 Cyl.3 misfire?

M

Mazda Guy

New member
Had code p0303 come up, replaced spark plugs, wires, cap & rotor.
Code still pops up. Any ideas?
Im gonna check the injector pulse this weekend, maybe try swapping injectors.
It does have a hesititation/stutter.
Only 1 coil for all plugs, so I doubt its that.
Gonna check compression as well, whats normal on this block?
Plugs were gapped at .060
 
my mercury cougar said cylinder 2 miss fire and it was the mass airflow censer and inproper gaping of the plugs
 
Back
Top