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checking injectors

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Old Oct 2, 2008 | 11:17 PM
  #1  
Jesse's87Z28's Avatar
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checking injectors

what is the best way to find out if my injectors are working properly? How do i know if they are stuck wide open full time? And what are the ohm specs? I have an 87 305 tpi
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Old Oct 2, 2008 | 11:37 PM
  #2  
jermdm's Avatar
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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.
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Old Oct 3, 2008 | 12:02 AM
  #3  
chevy boi's Avatar
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From: califorina
Car: 1989 i roc-z28
Engine: 350 tpi l98
Transmission: 700r4
Re: checking injectors

a cheap way i did it was i put a screw driver on each injector and you should be able to feel it plusing.
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Old Oct 3, 2008 | 07:40 AM
  #4  
Jesse's87Z28's Avatar
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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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