Injector Miss - Oil spout Oddity

I've been chasing down a miss for quite a while. Several months back, I noticed that the passenger side wiring harness was burnt, so I replaced all of the stuff on that side. Still a miss.

Today, I had some time to tear into the truck, and ran it without the valve covers. Passenger side looks good -- all of the oil spouts going the same amount, basically.

Drivers side a different story, though. The front-most injector doesn't spit ANY oil...the third one spits only a small amount. I tried switching the harnesses front to back, and it gave the same results...leading me to believe it's a problem with those two injectors (and the miss likely from the front).

Now for my questions: Is it likely that the solenoid on the front one is bad? Can I replace the solenoid without pulling the injectors? What about the third one...I'm assuming that the solenoid is OK (could be weak, I guess)?

Thanks for the help...I know one of you guys knows exactly what's wrong here....can't wait to get her fixed.

swap solenoids with a good injector and see what happens. if the deadness follows the solenoid, thats your problem. if it stays with the cylinder, you may have a bad harness or other issue.

If you have the solenoid off, check the poppet screw underneath the solenoid to make sure it is not loose. Loose poppet screws will cause a miss (been there done that on #7 injector on my truck more than once ... and may be loose again). A ground-down 4mm socket can sort of work to tighten it in a pinch, but the #8 linehead socket (I think it's #8) works better after tapping it down on the screw for a better fit. Cheers!

Patrick wins this one...that's sure enough what my problem was. very loose. I tightened it as best I could with the 4MM socket, couldn't really get a good hold on it. I've done some reading, I'll be calling Mylex Intl tomorrow to see about ordering replacement screws with TORX heads on them. I wasn't really pleased with how tight I was able to get them...I feel like I'll be doing it again in a short time.

It only took me about an hour to fix it...sure wish I'd have done this sooner. She purrs like a kitten again, thanks, fellas.

Mylex??? Wow....what's their warranty? 90 days?

Are you saying you've got some...I know you might, please tell me you do? (Or got the tool to work on the stockers?)

i need to get one of those nintendo tools for myself. i keep borrowing james when i need it!