Leaking Injector
Thread Starter
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5th Wheeling
Joined: Aug 2016
Posts: 45
Likes: 3
Leaking Injector
Howdy folks.
I have a 2001 f250 7.3 bone stock 550xxx miles.
Runs like a dream except at idle. I am pretty sure I have a leaking injector. Starts clear then after about 20 seconds starts white diesel smoke and a hell of a lot of it.
At idle it builds up. I punch it and it bogs down and blows hella white smoke then changes to black and starts haulin ***.
I have an AE with ford package. I know how to use it. I do not understand the data it presents to me.
Only codes it is throwing are "intake air heater" which I have a bad relay on but its been like that for at least 10 years and not been a problem
and its throwing and exhaust back pressure code which I cant really sort out.
also...cel stays on except when I back off the accelerator after a hard push then the light goes off until I accelerate again.
I know how to ohm the 42 and the uvch which I learned years ago on this forum. Everything seems to check out.
I have shimmed these injectors twice. I have put orings on them about every 2 years...the cheap ones.
If someone could sorta lead me down the proper diagnostic path, I would greatly appreciate it.
I just am not sure how to isolate the problem injector.
I have a 2001 f250 7.3 bone stock 550xxx miles.
Runs like a dream except at idle. I am pretty sure I have a leaking injector. Starts clear then after about 20 seconds starts white diesel smoke and a hell of a lot of it.
At idle it builds up. I punch it and it bogs down and blows hella white smoke then changes to black and starts haulin ***.
I have an AE with ford package. I know how to use it. I do not understand the data it presents to me.
Only codes it is throwing are "intake air heater" which I have a bad relay on but its been like that for at least 10 years and not been a problem
and its throwing and exhaust back pressure code which I cant really sort out.
also...cel stays on except when I back off the accelerator after a hard push then the light goes off until I accelerate again.
I know how to ohm the 42 and the uvch which I learned years ago on this forum. Everything seems to check out.
I have shimmed these injectors twice. I have put orings on them about every 2 years...the cheap ones.
If someone could sorta lead me down the proper diagnostic path, I would greatly appreciate it.
I just am not sure how to isolate the problem injector.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
We'll see if he comes back to check on his thread or not.
Got Data?
Joined: Dec 2012
Posts: 4,236
Likes: 1,368
From: Lake Stevens, WA
If I was brave enough, changing internal o-rings is something I’d like to try, and compare before and after ICP. But I am not brave…
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Fleet Mechanic
Joined: Sep 2011
Posts: 1,613
Likes: 106
From: Albuquerque
when mine started acting up, i found some bad O rings, but i also know i need new injectors, it will come! It may have just come for you!
X-4 on new injectors
X-4 on new injectors
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Logistics Pro
Joined: May 2017
Posts: 4,666
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From: Muskogee, Ok
Doubt he'll be back.
Maybe the next time I have a Corvette engine specific question I'll just post in any ol subcategory somewhere on a Chevy forum. Then I'll insult the forum when no one knowledgeable stumbles across it in the wrong section and tell the members I'm going to a forum dedicated to that specific engine platform....
Maybe the next time I have a Corvette engine specific question I'll just post in any ol subcategory somewhere on a Chevy forum. Then I'll insult the forum when no one knowledgeable stumbles across it in the wrong section and tell the members I'm going to a forum dedicated to that specific engine platform....
Thread Starter
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5th Wheeling
Joined: Aug 2016
Posts: 45
Likes: 3
Doubt he'll be back.
Maybe the next time I have a Corvette engine specific question I'll just post in any ol subcategory somewhere on a Chevy forum. Then I'll insult the forum when no one knowledgeable stumbles across it in the wrong section and tell the members I'm going to a forum dedicated to that specific engine platform....
Maybe the next time I have a Corvette engine specific question I'll just post in any ol subcategory somewhere on a Chevy forum. Then I'll insult the forum when no one knowledgeable stumbles across it in the wrong section and tell the members I'm going to a forum dedicated to that specific engine platform....
I don't fix unbroken ****.
I asked how to isolate the bad injector
By your logic, if the headlight goes out I should replace the truck.
Super helpful.
Great forum
Thread Starter
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5th Wheeling
Joined: Aug 2016
Posts: 45
Likes: 3
I would like to try.
Just bought a 81 f150 to bum around I'm while I tear down the power stroke.
I just wanted to isolate which injector was the problem.
Apparently though, the best solution from this forum is just to start throwing $1000s of dollars worth of parts at it or just pull the fuel cap and replace the truck.
Thread Starter
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5th Wheeling
Joined: Aug 2016
Posts: 45
Likes: 3
Got it.
In other words, you have no idea how to isolate a faulty injector.
Super helpful.
Thanks for the stellar comment.
CNCFAB
Joined: Apr 2020
Posts: 4,874
Likes: 2,006
no, I have not.
I would like to try.
Just bought a 81 f150 to bum around I'm while I tear down the power stroke.
I just wanted to isolate which injector was the problem.
Apparently though, the best solution from this forum is just to start throwing $1000s of dollars worth of parts at it or just pull the fuel cap and replace the truck.
I would like to try.
Just bought a 81 f150 to bum around I'm while I tear down the power stroke.
I just wanted to isolate which injector was the problem.
Apparently though, the best solution from this forum is just to start throwing $1000s of dollars worth of parts at it or just pull the fuel cap and replace the truck.
500+k is nothing to complain about. Replace worn out parts with fresh good quality parts, and keep on trucking.