Quick injector Question

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Jun 27, 2007 | 10:02 PM

grinekb

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Joined: Apr 2007

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From: auburn, al

Quick injector Question

I took my truck in and paid the dealer to look at it today. Well 85$ later and i think they are wrong. They want 500$ to change out the #5 injector. So I went out in the parking lot and cranked the truck up. I popped the hood and unplugged the #5 injetor and it started running really rough. So in my small knowledge of desiel engines, i think that the truck shouldn't run any different if that injector is bad. The mechanic was standing there and told me that I was wrong. Now i know he is probably right. But can someone give me an explanation without having a stick up there you know what?

Jun 27, 2007 | 11:15 PM

BC Powerstroke

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Joined: Mar 2007

Posts: 207

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From: Vancouver, BC Canada

I assume you are out of warranty as ford wants to charge you.

I am not as famliar with injectors but from my understanding is that as a last resort before considering changing the injector(s) some are experiencing good results with hotshot addictives to help improve/prolong injectors.

See this link
https://www.ford-trucks.com/forums/6...-additive.html

However the forum guru's should tune in to help you but they will need more information from you like your kms and more details of your symptons and when does it occur, etc.

For example injectors normally last approx. 250,000km. However some do fail prematurely like my company truck #5 injector at approx. 35,000km which warranty replaced.

My $0.02, Ford could fix what they need to fix when covered under warranty at their cost but when the bill is mine (out of warranty) I will contact or travel halfway accross the continent if I have to to get service from repurtable company's such as LIPD, Innovative, Elite or VJ's.

Good luck

Jun 28, 2007 | 07:05 AM

BowTieHatr

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From: Florence,SC

if it is bad, then the truck should be running bad at some point, whether its cold or hot.

Jun 28, 2007 | 10:09 AM

grinekb

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From: auburn, al

can an injector be partially bad?

Jun 28, 2007 | 10:16 AM

Deluxe05

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From: Denver, Co

Given the very tight tolerances within various pieces of an injector, I would say it is possible for an injector to be partially bad. I would like to think that it would operate slightly different between hot and cold or partial load vs. full load. But, that would just be speculation on my part.

Jun 28, 2007 | 12:57 PM

blackhat620

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Joined: Dec 2003

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From: Arizona

Quote:

Originally Posted by grinekb

can an injector be partially bad?

If you are asking can an injector be performing at less than 100% and the answer is yes. Generally injectors as with most parts do not fail all at once, it is a gradual process of declining performance. Hence the reason the diesel tech performed a contribution test to determine the performance level of each injector. The engine and PCM compensate for the weak injector(s) until they can no longer compensate and then a major problem experienced by the vehicle user.

Jun 28, 2007 | 08:22 PM

grinekb

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Joined: Apr 2007

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From: auburn, al

the paper work i did not show a contribution test. All it showed as the code he pulled off the truck that i had already done myself. And that cost me 85$