3.0L Cylinder #5 Misfire

[Sharky146]

I was unable to get a TPI Chevy to fire a few years back. I purchased a Noid Light kit from Autozone and tested each injector. After using it I returned it to the store and they gave me most of the purchase price back. Neat little outfit. The Noid light lets you know if the injector is actually firing.
Have you tried a bore scope to see if the intake valve is actually opening? You can rent that too.

I read about the Noid light. Using one was going to be my next step if swapping injectors didn’t work. Fortunately, the truck is running great now, but I will remember the Noid light trick the next time I suspect an injector problem.

I was able to visually verify that the intake valve was opening an closing when I had the lower intake manifold removed. I had a friend manually crank the engine while I shined a flashlight inside the #5 intake port of the head. It opens and closes nicely.

Fingers crossed that it keeps running well. It sat for up to a year before I bought it, so I need to get some miles on it before I know for sure that it’s a solid truck.

Thanks for the info.