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7.3 Injector longevity? #8332399 07/27/21 12:38 AM
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Reloder28 Offline OP
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My 7.3 has 306,000 miles & is running better than ever. I know, based on my drag racing days, that something is soon to break when everything is working right.

What would you say is the life expectancy of the totally stock 7.3 injectors on a motor that has been driven modestly?


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Re: 7.3 Injector longevity? [Re: Reloder28] #8333074 07/27/21 06:16 PM
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Original injectors with 300k+ miles? That’s amazing! Had a ‘99 7.3 that had 20 injectors replaced by 50k. 2 sets of 8 and 4 singles.

Re: 7.3 Injector longevity? [Re: Reloder28] #8333239 07/27/21 09:17 PM
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I would assume fuel quality and system maintenance has a lot to do with it.

If your not the original owner I wouldn't assume they are original. On the other hand, knock on wood, we have never had to replace injectors on any of our diesel trucks. Change fuel filters when your suppose to and buy fuel from big stations with high turn over.


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Re: 7.3 Injector longevity? [Re: Reloder28] #8333374 07/27/21 10:58 PM
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First injectors went out at 10,000 miles. All replacements were covered under warranty. Known issue with that year model. Also had injector issues with ‘03 6.0 when driven off the lot til replaced on my own dime at 160k. Was told they were bad, right after warranty ran out. No help from Ford that time.

Re: 7.3 Injector longevity? [Re: Reloder28] #8333381 07/27/21 11:06 PM
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Originally Posted by Reloder28
My 7.3 has 306,000 miles & is running better than ever. I know, based on my drag racing days, that something is soon to break when everything is working right.

What would you say is the life expectancy of the totally stock 7.3 injectors on a motor that has been driven modestly?


Sounds like someone stuck a 7.3 sticker on a 12valve Cummings grin

I personally try to take it to 400k. At this point why not.


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Re: 7.3 Injector longevity? [Re: Reloder28] #8333902 07/28/21 03:05 PM
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Replaced injectors on one at 435k. Sold my last one with 328k with no issues.

Re: 7.3 Injector longevity? [Re: redchevy] #8334482 07/28/21 11:43 PM
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Reloder28 Offline OP
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Originally Posted by redchevy
If your not the original owner I wouldn't assume they are original.



I am the original owner.


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Re: 7.3 Injector longevity? [Re: BOBO the Clown] #8334484 07/28/21 11:46 PM
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Originally Posted by BOBO the Clown
Originally Posted by Reloder28
My 7.3 has 306,000 miles & is running better than ever. I know, based on my drag racing days, that something is soon to break when everything is working right.

What would you say is the life expectancy of the totally stock 7.3 injectors on a motor that has been driven modestly?


Sounds like someone stuck a 7.3 sticker on a 12valve Cummings grin

I personally try to take it to 400k. At this point why not.



I agree. If I make it to close to 400,000 I will consider myself fortunate.


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Re: 7.3 Injector longevity? [Re: Reloder28] #8335201 07/29/21 04:21 PM
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Originally Posted by Reloder28
Originally Posted by BOBO the Clown
Originally Posted by Reloder28
My 7.3 has 306,000 miles & is running better than ever. I know, based on my drag racing days, that something is soon to break when everything is working right.

What would you say is the life expectancy of the totally stock 7.3 injectors on a motor that has been driven modestly?


Sounds like someone stuck a 7.3 sticker on a 12valve Cummings grin

I personally try to take it to 400k. At this point why not.



I agree. If I make it to close to 400,000 I will consider myself fortunate.


I bet it makes it. Pretty cool it’s still trucking along.


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Re: 7.3 Injector longevity? [Re: Reloder28] #8335309 07/29/21 05:26 PM
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I’d drive it til it breaks. Just not a long way from home.

Re: 7.3 Injector longevity? [Re: Reloder28] #8336825 07/31/21 12:49 AM
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I’ve worked on a bunch of the T444e engines, that’s the commercial version of the 7.3 psd

I’ve seen very few injectors actually fail, it’s typically the o-rings or the wrong oil that lead to problems.

They typically worn you before they leave you on the side of the road with very hard starts in cold weather.


Originally Posted By: Chunky Monkey
Never been to a camping world. I prefer Dick's to be honest.
Re: 7.3 Injector longevity? [Re: Reloder28] #8338152 08/01/21 07:10 PM
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I'm at 230k with the originals.

Re: 7.3 Injector longevity? [Re: TEXASLEFTY] #8343630 08/06/21 11:24 PM
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Originally Posted by TEXASLEFTY
They typically worn you before they leave you on the side of the road with very hard starts in cold weather.


Yeah, that's what my trusted mechanic told me today. Wonder where I gotta go to find that in Texas? cool


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Re: 7.3 Injector longevity? [Re: Reloder28] #8345149 08/08/21 07:53 PM
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Originally Posted by Reloder28
Originally Posted by TEXASLEFTY
They typically worn you before they leave you on the side of the road with very hard starts in cold weather.


Yeah, that's what my trusted mechanic told me today. Wonder where I gotta go to find that in Texas? cool


Leave it sitting for about 48 hours with lows at or below 49 degrees


Originally Posted By: Chunky Monkey
Never been to a camping world. I prefer Dick's to be honest.
Re: 7.3 Injector longevity? [Re: Reloder28] #8352239 08/15/21 02:49 PM
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200k is the recommended replacement interval.

You will notice a significant difference in performance, economy and noise.


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Re: 7.3 Injector longevity? [Re: Reloder28] #8355207 08/18/21 03:03 PM
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I got 413,000 miles out of mine in a 2001 before I replaced them a few months ago out of precaution. Now if only I could figure out why the truck handles like crap then I'd be really happy.

Re: 7.3 Injector longevity? [Re: TWarren] #8355559 08/18/21 07:27 PM
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Originally Posted by TWarren
I got 413,000 miles out of mine in a 2001 before I replaced them a few months ago out of precaution. Now if only I could figure out why the truck handles like crap then I'd be really happy.

Probably time to rebuild the front end.

Re: 7.3 Injector longevity? [Re: 68rustbucket] #8355589 08/18/21 07:51 PM
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Originally Posted by 68rustbucket
Originally Posted by TWarren
I got 413,000 miles out of mine in a 2001 before I replaced them a few months ago out of precaution. Now if only I could figure out why the truck handles like crap then I'd be really happy.

Probably time to rebuild the front end.



My 01 front end needed rebuilt every 150.000 with a factory front bumper.

Re: 7.3 Injector longevity? [Re: wp75169] #8376943 09/07/21 12:26 AM
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Originally Posted by wp75169
Originally Posted by 68rustbucket
Originally Posted by TWarren
I got 413,000 miles out of mine in a 2001 before I replaced them a few months ago out of precaution. Now if only I could figure out why the truck handles like crap then I'd be really happy.

Probably time to rebuild the front end.



My 01 front end needed rebuilt every 150.000 with a factory front bumper.


I squeezed 250,000 out of my original front end suspension.


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Re: 7.3 Injector longevity? [Re: Reloder28] #8378286 09/08/21 03:17 AM
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255k on my 01. Had an injector quit a while back. It’s been parked. Time to fix and sell.

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