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10-25-2014, 02:41 PM
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#1 |
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Registered User
Join Date: Sep 2014
Location: Tallahassee, Fl
Posts: 10
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One injector working
How do I repair an injector that's not spraying, is it a electrical problem or just need to replace it?
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10-25-2014, 03:58 PM
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#2 | |
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Registered User
Join Date: Jun 2014
Location: Orlando Florida
Posts: 1,598
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Re: One injector working
Swap injector plugs. That's how I checked mine. The wires are long enough to plug into either. It was clogged so I got another one.
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10-25-2014, 06:47 PM
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#3 |
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Registered User
Join Date: Sep 2014
Location: Tallahassee, Fl
Posts: 10
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Re: One injector working
I will try that
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10-26-2014, 10:43 AM
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#4 |
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Just here to tinker
 
Join Date: Jun 2008
Location: Holland, MI
Posts: 3,689
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Re: One injector working
Get an ohm meter and ohm out the pins on that injector and compare it to the other injectors. Injectors can usually be overhauled at an injection shop for around $40-60 each, depending on the shop.
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78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(winter unit)https://67-72chevytrucks.com/vboard/...25#post8900725 |
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10-26-2014, 11:19 AM
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#5 | ||
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Registered User
Join Date: Jun 2014
Location: Orlando Florida
Posts: 1,598
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Re: One injector working
Quote:
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10-26-2014, 01:09 PM
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#6 |
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Registered User
Join Date: Dec 2007
Location: Kimberley, BC, Canada
Posts: 799
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Re: One injector working
I think, from memory, that a low impedance TBI injector will measure around 4 ohms. Also, with the ignition key on, one of the two wires that goes to each injector will be 12V hot. The ecu grounds the other wire to open the injector. And, if you point a timing light at the injector with the engine running and the air cleaner off, you can visually see the spray pattern.
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Greg 64 GMC Suburban - 283, NV3500, 14 bolt 77 C10 swb - 292, SM465, 12 bolt |
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10-26-2014, 04:12 PM
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#7 |
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Registered User
Join Date: Sep 2014
Location: Tallahassee, Fl
Posts: 10
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Re: One injector working
I swap plugs on the injectors and it's still not working
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10-26-2014, 04:55 PM
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#8 | |
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Registered User
Join Date: Jun 2014
Location: Orlando Florida
Posts: 1,598
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Re: One injector working
It's clogged. I got a whole throttle body at the junkyard for $25 and used an injector from it, but new ones I priced at about $60 each at AutoZone.
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10-26-2014, 06:45 PM
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#9 |
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Registered User
Join Date: Sep 2014
Location: Tallahassee, Fl
Posts: 10
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Re: One injector working
Going to change it... Thanks for the help
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