Replace injectors or clean spool valves?
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Logistics Pro
Joined: Nov 2010
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Replace injectors or clean spool valves?
Kinda in a tickle here......
i switched my oil to 10w30 and it helped out for a few weeks now the injector stiction is back again and I'm getting tired of it......
symptoms when the truck is cold it lacks power/kinda bucks a little bit but when it's warmed up it's a raped ape!
Literally anytime the EOT goes below 150* I will notice the issue again but once it gets passed that it's perfect again.
I can get ford remans for $1,140 or should I attempt to clean the spool valves and see if that cures the problem for good?
Any info or pointers will be great as I am looking to either clean them or replace them this weekend. Thanks!
i switched my oil to 10w30 and it helped out for a few weeks now the injector stiction is back again and I'm getting tired of it......
symptoms when the truck is cold it lacks power/kinda bucks a little bit but when it's warmed up it's a raped ape!
Literally anytime the EOT goes below 150* I will notice the issue again but once it gets passed that it's perfect again.
I can get ford remans for $1,140 or should I attempt to clean the spool valves and see if that cures the problem for good?
Any info or pointers will be great as I am looking to either clean them or replace them this weekend. Thanks!
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Logistics Pro
Joined: Nov 2010
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Honestly, I have been running full syn oil since I owned the truck probably almost a year ago or so.
Previous owner who knows honestly.
Truck has 155,000 on it I've pulled injectors out of 6.0s many many times just never pulled an injector apart.
I have the cash to do the full injector job.....but if I could possibly clean the spool valves and fix the issue i would.
I want to say when we scanned it I might of been injector #6 that seemed a bit "weak" but I don't want to do injectors 1 at a time until it's good.
Also, when backing up or pulling forward very slowly foot barely on the accel the exhaust note sounds spotty
it will do this hot or cold no matter what
i also don't want to burn up a cylinder running with crappy injectors if it's more than a spool valve issue
Previous owner who knows honestly.
Truck has 155,000 on it I've pulled injectors out of 6.0s many many times just never pulled an injector apart.
I have the cash to do the full injector job.....but if I could possibly clean the spool valves and fix the issue i would.
I want to say when we scanned it I might of been injector #6 that seemed a bit "weak" but I don't want to do injectors 1 at a time until it's good.
Also, when backing up or pulling forward very slowly foot barely on the accel the exhaust note sounds spotty
it will do this hot or cold no matter what
i also don't want to burn up a cylinder running with crappy injectors if it's more than a spool valve issue
Senior User
Joined: Jan 2017
Posts: 428
Likes: 2
From: Central Illinois
If you only have 1 weak 1, I'd definitely test the waters pulling it apart. It'll at least give you an idea of how long to do all 8 would take. Although from the spool valve pics I've seen it's basically just to buy yourself some time. Once the spool valve is worn/scored it's reman time.
Have you taken a shot in the dark with archoil or rev x? Seen many peeps rave about it, although we all know once the spool valve is too far gone it's just a bandaid.
Have you taken a shot in the dark with archoil or rev x? Seen many peeps rave about it, although we all know once the spool valve is too far gone it's just a bandaid.
Posting Guru
Joined: Mar 2014
Posts: 1,468
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From: Salt Lake City, utah
I vote for injectors. I have removed and cleaned the spool valves in my injectors when I changed the orings. It's not that hard of a job but the hardest part is getting the correct torque on the spool bolt and nut if it's to tight the clearance won't be correct and too loose you risk the nut coming off. It took care of the stiction for a couple thousand miles but has returned.
If you have the cash I would do it once and be done with it why go back in later to change them one at a time.
If you have the cash I would do it once and be done with it why go back in later to change them one at a time.
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Logistics Pro
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Yeah, I think I will end up replacing the injectors. Got home and the oil tank was empty! So it might have to wait until next weekend.
Ive tried REV-X and it works EXCELLENT, for a few thousand miles then the symptoms would return......
I'm tempted to buy the archoil and try that but I think it's to far gone......
i would clean the valves but I really want to do it once and do it right.
Ive tried REV-X and it works EXCELLENT, for a few thousand miles then the symptoms would return......
I'm tempted to buy the archoil and try that but I think it's to far gone......
i would clean the valves but I really want to do it once and do it right.
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FTE Leadership Emeritus
Joined: Sep 2003
Posts: 12,252
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From: Houston, Texas
Should injectors go bad it's ALWAYS better to replace them with Motorcraft remans than clean the spool valves. It's a very risky practice that's cost people more injectors than they've saved.
Ask Rusty Axlerod how well cleaning the spool valves went...
Ask Rusty Axlerod how well cleaning the spool valves went...
Postmaster
Joined: Aug 2015
Posts: 3,910
Likes: 18
From: NW IA
I remember a thread here over a year ago of someone who ended up taking some back out because of issues with the nuts, etc..........replacing them is the best way to go if the additives won't touch it.
Tuned
Joined: Jun 2011
Posts: 259
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From: West TN
I've been debating this myself, fortunately this winter my truck has not been acting badly, maybe the years of synthetic oil and winters of Rev-X or Archoil have made a permanent change... not counting on it.
Suffering from stiction is not a "too far gone" situation. Just do the chemical in the winter to get by, and your injectors are fine.
Replacing needs no discussion, you know what you get there. Except that you will have the newer style spool valves, which I am told will not develop stiction, but that is just an impression I get.
The cleaning process is something I've thought about trying, but there seems to be a lot of guessing out there as to whether and how well it works, and what kind of risk there is (assuming you don't lose or damage anything in the process). Also not sure what all you'd need to buy, surely seal kits at least.
People who claim to have done it themselves like the idea, but warnings come from people who I can't say whether they've done it or just passed on something they heard on the internet.
My reason for putting it off is laziness, I want to be able to answer the question myself.
Suffering from stiction is not a "too far gone" situation. Just do the chemical in the winter to get by, and your injectors are fine.
Replacing needs no discussion, you know what you get there. Except that you will have the newer style spool valves, which I am told will not develop stiction, but that is just an impression I get.
The cleaning process is something I've thought about trying, but there seems to be a lot of guessing out there as to whether and how well it works, and what kind of risk there is (assuming you don't lose or damage anything in the process). Also not sure what all you'd need to buy, surely seal kits at least.
People who claim to have done it themselves like the idea, but warnings come from people who I can't say whether they've done it or just passed on something they heard on the internet.
My reason for putting it off is laziness, I want to be able to answer the question myself.
Tuned
Joined: Jun 2006
Posts: 420
Likes: 4
That would be me that had to pull the injectors back out to loosen up the spool nuts...I guess I torqued them to tight and developed a random stumble and miss once I got up to operating temps. Since it only cost me my time and 8 seal kits it was worth a try to me and feel that it did help a bit but feel that a total replacement could be a longer term fix since I doubt it's only the spool valves that get tiered over time.
Another thing that really helped with my cold starts and siction was sending my ficm off to Ed for a massage and atlas 40 tune installed, and a bonus with the extra bit of power there is a grin factor to be gained by giving this a try.
Another thing that really helped with my cold starts and siction was sending my ficm off to Ed for a massage and atlas 40 tune installed, and a bonus with the extra bit of power there is a grin factor to be gained by giving this a try.
