I was told that you can check the fuel injectors by pulling off the plug wires one at a time while the engine is running. If there is a change in the way the engine is running then the injector is fine. If there is no change to the engine then the injector that is lined with that plug number is bad.

Well I have done what was told to me and I get no change on plugs 2 & 3. Has anyone ever tired this method and if so was it effective. Kind of had to come by a mechanics scope. LOL

 

Pull the plugs, they will tell you what's going on...

 

1. Stop what you are doing before you get a pretty decent shock, if you haven't already. Even stock coils produce a large voltage.
2. Go to a hardware store and pick up a cheap digital volt-ohm meter, DVOM for short.
3. Get home from the store with your new tool, unplug both ends of the injector harness (not sure which actually connects to the ECM, which you do NOT want to fry), set the DVOM to read in ohms (resistance tests), probably on the 2000 ohms max setting, and probe the terminals on either end of the harness two at a time. If you don't get a reading on a pair, move one lead to a different terminal. You should read 4 ohms or close to it. If you read six or more on a bank, you have a problem. Remove the upper plenum, followed by the injector harness. Probe the terminals on each injector. Each injector should be within about .5 ohm of 12 ohms. If less, you have a problem there. If more (which is unlikely but possible) you have a problem.

Be warned, this test may not fix the problem. If an injector is stuck or clogged, it won't deliver fuel, or it may deliver too much, causing the computer to lean out the rest of the injectors. This cannot be detected other than with the injector at a special testing facility, so I would just go to a yard and pick up a set of injectors which you have resistance tested with your DVOM before paying (I hope).

 

Well I have resorted to the final truth. I will be pulling the engine and rebuilding it. I can't take the drama anymore. I can have it pulled and broken down by Monday. Get it to the shop and have it back by next friday, and up and running in a week. I have a guy here that does the work at home since he is retired. Get this he does it as a hobby and has a connection for parts at wholesale price. So I will be getting the engine done for about 3 to $400. Can't beat that with a stick.

So thanks for all your input and I will be killing all my worries and know that I have a good running engine that will last for the long haul. I plan on keeing my car for a while so this is my best bet.

I'll keep you all informed at how it goes.

 

Umm, if you have any bad injectors and/or wiring, you will end up with the same problem even if you get a brand new GM crate 2.8.

 

I have already brought new Accell fuel injectors for the car but I'm not putting them in till I get my engine back. Everything will be new when I put it back in weather I need it or not. Don't want any issues at all. So I will be fine. Thanks for the concern though.