checking injectors
Senior Member

Joined: Nov 2001
Posts: 915
Likes: 2
From: Erlanger, KY
Car: 1989 Iroc-z
Engine: 350 TPI
Transmission: Auto 700R4
Axle/Gears: 9 bolt - 2.77
Re: checking injectors
I not sure the best way to test them besides taking them out and having them tested on an injector machine like jon has at fuelinjectionconnection.com. Ohming the injectors is a start to see if the coils are ok. They should be at 16 ohms, but anything under I think 14 is a bad coil. You should check them when there cold and when there hot to see if there is any change in ohms. I guess you can remove the fuel rail with the injectors attached and crank the engine to see there spray but not forsure if thats ok to do.
Re: checking injectors
I checked the ohms actually i got 17 but i think my tester is f'ed up cause sometimes it reads 12 volts across the batt and sometimes it reads 23-24. I Have my smog pump so it is hard to hear with a screw driver im supposed to do the ole ear to the screwdriver trick also my car runs ruff at this point. Also what am supposed to have for volts at each injector harness? Is this voltage supposed to be constant? Thanks Guys for all the help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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