Problem with new injectors from RCD

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Apr 25, 2021 | 06:55 PM

Ashtag77

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5th Wheeling

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Problem with new injectors from RCD

Hey guys i recently replaced all 8 of my injectors with river city diesel 175/30s. truck ran amazing for first hours then it started missing on cylinder 3 tore it back down no visble problem but number 3 injector seem to not click when the key is cycled swapped plugs with the one next to it still didnt click if you put your ear up to it you can hear it but cant feel it like the other ones thanks

Apr 25, 2021 | 07:24 PM

bismic

Fleet Owner

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Do you know if they install new spool valves and coils?

Apr 25, 2021 | 07:33 PM

Ashtag77

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5th Wheeling

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Quote:

Originally Posted by bismic

Do you know if they install new spool valves and coils?

yes they did they are brand new

Apr 25, 2021 | 07:38 PM

bismic

Fleet Owner

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I guess changing positions of the #3 injector might reveal something (ie swap #1 and #3).

Apr 25, 2021 | 07:39 PM

Ashtag77

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5th Wheeling

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Quote:

Originally Posted by bismic

I guess changing positions of the #3 injector might reveal something (ie swap #1 and #3).

tried that same thing

Apr 25, 2021 | 07:57 PM

bismic

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In your other thread, you mentioned you swapped plugs and listened for the clicks. That is not what I meant.

Apr 25, 2021 | 07:59 PM

Ashtag77

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5th Wheeling

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Quote:

Originally Posted by bismic

In your other thread, you mentioned you swapped plugs and listened for the clicks. That is not what I meant.

i see what your saying ive tried all 4 plugs on the number 3 injector im not sure what changing its spot would do

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Apr 25, 2021 | 10:22 PM

Ashtag77

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5th Wheeling

Joined: Jan 2021

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Quote:

Originally Posted by BLADE35

You could ohm out the coils check for discrepancy

how would i go about that ive ohm tested snd conpared to otheres all seem to be identical

Apr 26, 2021 | 07:29 AM

#10

joe blow

Logistics Pro

Joined: May 2004

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When I did the same type of test prior to buying my new WDI 175/30's, WDI told me that test is not as accurate as people might think......take it for what it's worth.

I had an intermittent miss associated with a shorted/open coil in my situation, and they all were identical as well.

Good Luck

Apr 26, 2021 | 08:02 AM

#11

Toreador_Diesel

FTE Leadership Emeritus

Joined: Sep 2003

Posts: 12,268

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From: Houston, Texas

Make sure your FICM Plugs are fully seated, I'd also make sure your FICM voltages are good. I have a customer who's relatively new #2 injector stopped responding. Each time I ran the injector electrical self test, #2 never reponded, then 3, 4, and 7 followed suit. I slapped a spare FICM on his truck and it fired right up no problem. The long and short of it was that his logic board was toast.