Testing fuel injectors? How?

One is the Ohm test. Unplug a wire from the injector and touch the terminals with the ohm meter leads. I don't think it matters which leads touch which terminal

I think mine tested out around 14 to 16 Ohms last month. Take two readings, one with the engine Cold then Hot.

I'm not sure what a Bad ( Ohm ) reading would be. Maybe someone else can chime in here.

I don't know of any other test methods.

I replaced 2 tires & a crank sensor today.

Good Luck

========= Harryface =========

~_~_~_~_U.S.A._~_~_~_~_~_

~~~The Former Fleet ~~~

Harry Face said

I s'ppose you could also check for shorts to ground. Both leads should be opens when measured from lead to chassis.

hth

Not sure mortal man has the equipment to properly check an injector. I thought they should be around 12 ohms but that's only one check. They can have the right resistance buy still be partially clogged. How much do you trust your mechanic? If you want to DYI, I solved a misfire problem in a 98 Montana by installing a set of reconditioned injectors from

The problem is that I don't have the funds to replace all the injectors at once. For 6 @ 70.00 (for new) That's almost 500.00 :( I don't plan on having the car much longer.

Hmm ... seems really cheap for an injector at that place ... How long have you had those injectors?

Replaced them in Jan 04 & about 6000 miles ago.

but your going to pay 300 to have them looked at? then replaced if nessacery?

Your mechanic may be right but if you want to try a cheaper solution, here is one. Get a good fuel injector cleaner, I use Marvel Mystery Oil. Get on the interstate & run it out. Try to keep an average speed of 70-80 mph. Run at least 100 mi. That may take 1 hour 15-20 min but you should see some improvement if the injector is only clogged. If that is the problem all of the injectors should need cleaning.

A short (0 Ohm) is a guarantee the injector doesn't work. Resistance within spec is no guarantee the injector works. Since your injector does something I would expect all values to be within spec.

Most likely the faulty injector (if there really is one) is worn out, I recently tried to find a place to check my injector and didn't find anything useful.

Not to pick a nit but that's just over 400 dollars (420). I'm sure your point still stands on that anyway though.

Thanks Harry, I'll try it. It's a little hard on the 3100 to check hot, but I'll see if I can get into the harness and check there... after I put the fuel tank back in my van

Already paid 250 to have my 'miss' looked at ...

Been there .. done that :)

hehe .. 420.00 plus gaskets, bandaids, and money for the cuss jar = $500.00

Thanks Don. I'm gonna give em a whirl if they reply to my email.

Using that stuff as we speak. We'll see what the mystery stuff will do.

If someone charged you that:

Then told you it was an injector. With all due respect, you were "BUNGHOLED!"

Refinish King

PS What ever happened to customer, not servicing the customer?