do you have a injector wiring code? I can't remember exactly if its a P0203 for cyl. 3. I had this problem on a venture van, I ended up running a new wire from the pcm straight to the injector that was having problems on that van and it fixed it. As I said though it had a code saying injector fault #2 or 3 I don't remember now.


My other thoughts that I hope are not the case is that cyl#3 is the popular to chip a piston, but alot of times the plug will be smashed with that.