Can anyone tell me how to determine which injector is bad? Seems like its running on seven, happened suddenly in my driveway, but i don't know how to determine which injector. My best diagnostic tool is a Mac ET99 which doesn't seem to support diesels, and there are no OBD codes. Ideas? Its a 2003 7.3.
Thanks

 

Where are you? You may be close to one of us that has AutoEnginuity and we could scan your truck.

 

Im in Alta Ca in the boonies, not near anyone. Also need to know if its ok to drive it with a bad injector.

 

there is a guy from lake tahoe area I think he just got AE as well hes on here often but if you take valve covers off engine running pop plug off injectors one at a time whatever on doesn't make engine run worse is the one or ones not contributing.

 

There are those that have run on 7 cylinders, but I won't personally endorse it as a good practice. I had one that was a dud and when the engine warmed up, I felt a "kick" and discovered the injector wasn't completely dead... it was just weak. I suspect the kick was the cylinder igniting at the wrong time with enough fuel in there under just-right conditions... but my head was not in the cylinder to see what really happened.

Like jps47 said, you can pull one connector at a time, or get a laser thermometer (at least a 600 degree F limit, they're pretty inexpensive nowadays), aim it at each cylinder outlet on the exhaust manifold, and find the one cylinder that's colder than its equal on the other side.

There are about 3 copies of AE in the Reno/Tahoe area that I know about, and two of them should be back from the holiday weekend by now.