Okay, this weekend I took a few seconds to test the resistance of all of my injectors. On the drivers side bank of injectors they all tested at 12.3 Ohms on the Pass. side bank they all tested at 12.5 Ohm with one at 12.6. Do these numbers seem okay? Is it weird to have the numbers the same on one bank and then the numbers all the same on the other, but different .2 side to side, or is this just by chance.

Lastly I've read a few posts on here and it seems like some people trust the resistance test and others don't.... I understand that the test won't tell me if the injector is leaking... but it will tell me if the injector coil is okay, right?

Thanks for the help.

 

Mr. Bearing,

That is precisely what that test will indicate - Whether the solenoid coil insulation is intact or not. It appears that all of your's are well within acceptable specifications.

The problem that most people have with this test is when it is interpreted as an overall indication of injector performance, such as flow rate, possible leakage, and whether the solenoid is actually operating the valve pintle. As you know, nothing could be further from reality.

At least electrically, your set is like new.

EDIT: Further, the injectors used on an '87 TPI should have been the early Rochester /Bosch design. Those seem to be less prone to coil failures than some of the later Multec injectors.

 

Thanks for the reply. The injectors I have in my car should be from a 93-96 lt1 Z-28. I bought them on E-bay about five years ago when I built my motor. I was still in Drexel finishing my degree are the time so everything was on a tight buget. The reason I'm checking them now is I might pull them out this winter and have them cleaned and flow checked since I have the money now. What type of injectors would they be, to my knowledge they should be 22 lbs per hour. They have run without a problem for the last 5 years 30,000 miles on the new motor so the other side of me thinks I should just leave them be.