Hello,

So I have been having a cold starting problem with my truck. We have since put a new fuel pump, fuel pressure regulator, spark plugs, and fuel filter. Now we had the injectors tested and they tested fine but they did tell us we had a decent misfire in cylinder 6 and a slight one in cylinder 1. I have no idea where to go with this anymore. We have just hit a dead end.

My truck is a 2003 s10 zr2 4.3L
The problem started about 2 months ago.

Thank for the help!!!!!