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Cylinder 4 misfire

977 views 2 replies 2 participants last post by  Caddy fast 
#1 ·
Yes I’ve search everywhere for this nothing too helpful.
So I clean out the injector
Switch out the injector
Switch out the coil pack
Switch the wiring harness for coil pack
New spark splug and wires
Clean out the maf
I did a compression test and number 4,2,7 are all same compression which is 165.
ive spray around manifold too find air leaking or see idle changed. Didn’t happen.
anyone could chime in please
 
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