Injector question for the Mechanics - Ford Powerstroke Diesel Forum
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post #1 of 23 Old 01-20-2008, 04:52 PM Thread Starter
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Injector question for the Mechanics

How do you figure out if you have a injector that's bad or multiple Injectors? Side note how long does it usally take to get alot of air out ? I took the Fuel Filter Housing off and have had air trouble since. that's been about 300 miles later.

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post #2 of 23 Old 01-20-2008, 05:04 PM
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Have a buzz test and contrib/balance test run. No reason to guess with injectors.

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post #3 of 23 Old 01-20-2008, 05:07 PM
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is it smokey on startup?

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post #4 of 23 Old 01-20-2008, 05:08 PM Thread Starter
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buzz test

Please I'm dumb country boy speak in layman terms

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post #5 of 23 Old 01-20-2008, 05:10 PM
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like said before , cylinder contribution test needs to be run, that basically tells you what cylinder it is , then you have to determine if its a compression issue or an injector , usually air is pushed out of the system , within a few miles or no more than 20 miles , why do you think its an air problem

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post #6 of 23 Old 01-20-2008, 05:11 PM
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Please I'm dumb country boy speak in layman terms
These 2 tests will need to be run by someone who has the correct equipment. It's not something you can do without it. Simply put, one test will measure electrical functionality and the other will measure operational functions.

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post #7 of 23 Old 01-20-2008, 05:12 PM
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Please I'm dumb country boy speak in layman terms
a buzz test is done with a good quality scanner , it doesnt tell you if the injector is bad , it basically tests the electrical system to the injector

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post #8 of 23 Old 01-20-2008, 05:13 PM
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Originally Posted by SCUFFY828 View Post
like said before , cylinder contribution test needs to be run, that basically tells you what cylinder it is , then you have to determine if its a compression issue or an injector , usually air is pushed out of the system , within a few miles or no more than 20 miles , why do you think its an air problem

Listen to this person. Nothing more needs to be said.

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post #9 of 23 Old 01-20-2008, 05:14 PM
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well if you have alot of air and have put 300+miles on the air is not going away, there must be a leek and it is sucking air somewhere.

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post #10 of 23 Old 01-20-2008, 05:17 PM
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well if you have alot of air and have put 300+miles on the air is not going away, there must be a leek and it is sucking air somewhere.
*IF* there is that much air, damage may have already been done to the injectors. It's something I'd want tested. Guessing with injectors is a crap shoot.

EDIT: 300 miles isn't that much, but depending on the amount of air... who knows.

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