Testing fuel injectors? How?

True true.

cylinder/injector

Never do that. If anything remove the spark plug wire from the plug. Hold it with something with rubber grips (such as pliers), pointed at something like an exhaust manifold. To which it will arc, rather then to your hands.

It's basically a dead cylinder test. Driving on a dead cylinder is something to avoid. It can be anything from a hole in the piston, to a valve that is stuck closed. Some time's it's just a fouled out spark plug, a bad terminal on a DIS or distributor tower, or even a bad plug wire.

Knowing which cylinder is dead is a good starting point. Yet with fuel injectors, you may have one dead. Yet find out 2 or 3 are below the required readings. With injectors you should First check for pulse with a noid light (signal from ECM). Then check pulse voltage. After that test all the injectors.

Two injectors with issues will cause an engine to run bad, yet it may seam like it only has one injector down. Charles

How did you get *her* to drink it? Did she work any better? Hmmmmmmm, maybe ill try some on mine....

RK (sorry,lol......Not)

What's an injector pulser run?

Here's some nfo in GM's techlink:

About $50.00!

That's for a top of the line OTC, available at almost all auto parts stores, or Mac Tools. Snap On will try to sell you something they say is better, but as most technicians know. Snap On electronics are third in line, number one is OTC!

Refinish King

For more info on OTC stuff:

I cleaned injectors a couple times by using my mighty vac pump hooke dup to the rail end of the injector, create a vacuum.

Hook the injector up to a light 5v AC adaptor, and put the engine end of the injector in a bowl with carb cleaner.

The 5V ac makes the injector pulsate and the carb cleaner gets sucked through it. You will be amazed how much crap comes out of the injector. U can also check the spraypatern like that.