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Open Roads Forum  >  Tow Vehicles

 > When to change injectors ???

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ilvtravln

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Posted: 08/02/11 03:45pm Link  |  Print  |  Notify Moderator

My former tow vechile, (95 Ford F 250 PSD 7.3L) which I now use as a work truck turned 100K miles. Is there a point at which I should change the fuel injectors ? On the other hand the old saying "if it ain't broke don't fix it". It runs excellent, I put in injector cleaner once in awhile. Thanks


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Dave H M

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Posted: 08/02/11 04:20pm Link  |  Print  |  Notify Moderator

I would not even think if messing with injectors if the rattler is running fine. My F 250 (99) has 160K on the clock.

I have never heard of changing out injectors just for grins.

camping man

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Posted: 08/02/11 04:33pm Link  |  Print  |  Notify Moderator

You might get 300k out of them, don't worry about it.


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naturist

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Posted: 08/02/11 08:21pm Link  |  Print  |  Notify Moderator

I understand the injectors for my Jeep CRD are around $600 each. Not something I want to replace if I can help it.





720Deere

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Posted: 08/02/11 08:34pm Link  |  Print  |  Notify Moderator

A 7.3 will let you know long before they totally fail. A common indicator is hard starts and rough idle on a cold start. What usually fails is on the high pressure oil side so they will begin to stick when they are cold. Even then, they usually pick up and go as the engine temp rises. As long as you keep clean oil in the motor, I wouldn't worry about it for quite a while yet.

I've seen them go several hundred thousand miles and I've seen some that didn't make 80,000 miles before they started to act up. Usually people who go long intervals on cheap oil seem to have the most problems.


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Turtle n Peeps

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Posted: 08/02/11 05:08pm Link  |  Print  |  Notify Moderator

PM for injectors is like PM for points. (anybody remember those?)

The second you start a new engine they start to degrade.
How much you let them is up to you. I changed mine out on my 6.5 at 100K. I only did it because they were like $25 bucks apiece and easy to do.

I would think they would still be in there at some of the injector prices I have seen for some of these common rails!!!

5 grand for a friend that just did his in his 04 Dmax!!! But then again he had no choice because he was making oil and it was not PM.

If your really concerned about it you can pull one and bench pattern test it to see what the pattern does. That is only a few bucks to do and the shop can tell you what shape the injector is in.


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skipnchar

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Posted: 08/02/11 08:47pm Link  |  Print  |  Notify Moderator

Had 135,000 on my F150 and injectors were still performing like new. Shouldn't be any reason to change until they no longer do their job.


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durallymax

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Posted: 08/03/11 06:50am Link  |  Print  |  Notify Moderator

Your f150 injectors don't run at over 20,000psi

5k for a dmax injector job? You got hosed.

Like its been said, they will let you know when they are going put. Injectors are a wear part.

pigbike

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Posted: 08/03/11 07:33am Link  |  Print  |  Notify Moderator

How long do the injectors usually last in a late model Cummins 5.9?

hotpepperkid

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Posted: 08/03/11 07:12pm Link  |  Print  |  Notify Moderator

durallymax wrote:

Your f150 injectors don't run at over 20,000psi

5k for a dmax injector job? You got hosed.

Like its been said, they will let you know when they are going put. Injectors are a wear part.


So how much should an injector job cost for a Dmax


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