Injectors - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 01-14-2013, 12:04 PM Thread Starter
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Injectors

Is there anyway to know if any of the injectors are bad?
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post #2 of 11 Old 01-14-2013, 12:55 PM
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post #3 of 11 Old 01-14-2013, 01:03 PM
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Google: Buzz Test
What he said.

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post #4 of 11 Old 01-14-2013, 01:17 PM
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buzz test And a contribution test.

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post #5 of 11 Old 01-14-2013, 05:40 PM
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Do a buzz and contribution test. Make sure you do the buzz test when the truck is completely cold(before starting for the day), and the contribution test when the truck is completely warm.

An injector can be "bad" in many ways. It may pass both of those tests and still be considered bad on a flow bench.

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post #6 of 11 Old 01-14-2013, 06:07 PM
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i am troubleshooting right now around the same thing...in my case i did the buzz test and all sounded fine...did the contribution test and in my case #8 P0284 code...my question in my case is if it is a bad injector do you replace the one or all...

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post #7 of 11 Old 01-14-2013, 06:34 PM
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injectors

I found #7 bad and only replaced it. It would probably better to change the entire bank. Once you pump out the oil/fuel, it is pretty quick but would be a pain to do every week if injectors keep failing.
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post #8 of 11 Old 01-14-2013, 06:38 PM
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Quote:
Originally Posted by hotairgypsy View Post
i am troubleshooting right now around the same thing...in my case i did the buzz test and all sounded fine...did the contribution test and in my case #8 P0284 code...my question in my case is if it is a bad injector do you replace the one or all...
Are you sure #8 is bad? It's pretty common for #8 to fail a CCT but be perfectly fine. I believe #3 also occasionally has this issue.


Replacing 1 vs all is kind of a personal opinion. You can do it both ways. Depending on how many miles are on the injectors would make my decision. I would rather replace everything the first time and not have to do it again. But then again, a bad injector could be a great excuse to upgrade.

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post #9 of 11 Old 01-14-2013, 06:58 PM
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Quote:
Originally Posted by hotairgypsy View Post
i am troubleshooting right now around the same thing...in my case i did the buzz test and all sounded fine...did the contribution test and in my case #8 P0284 code...my question in my case is if it is a bad injector do you replace the one or all...
That is usually a ghost code, meaning that it is a false failure. This is usually due to the gray CPS. It is possible that just your #8 injector is bad, but not likely.

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post #10 of 11 Old 01-14-2013, 07:32 PM
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Talking

Quote:
Originally Posted by Tj Krawler View Post
But then again, a bad injector could be a great excuse to upgrade.
That's what I did.

2000 F250
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DieselRX glow plugs
Zoodad
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