i had a real bad problem with stiction but after the oil change(with hot shots) it has all cleared up. no longer have to let it run 10-15 minutes to warm up. happy camper here.

 

Whatchyoutalkingbout?

 

What is stiction?

Wutchubtalkin bout Willard?

 

https://en.wikipedia.org/wiki/Stiction

 

Personally, I've never had any luck with the "snake oils" out there. I always ended up replacing the injectors to fix the stiction, especially on the 6.0.

 

lol its "willis"
Stiction is the static friction that needs to be overcome to enable relative motion of stationary objects in contact.[1] The term is a portmanteau of the term "static friction",[2] perhaps also influenced by the verb "stick".

Any solid objects pressing against each other (but not sliding) will require some threshold of force parallel to the surface of contact in order to overcome static cohesion. Stiction is a threshold, not a continuous force.

In situations where two surfaces with areas below the micrometer range come into close proximity (as in an accelerometer), they may adhere together. At this scale, electrostatic and/or Van der Waals and hydrogen bonding forces become significant. The phenomenon of two such surfaces being adhered together in this manner is also called stiction. Stiction may be related to hydrogen bonding or residual contamination.Stiction is a commonly used term when diagnosing diesel fuel powered engines.
The Ford Powerstroke 6.0-L and 7.3-L engines are the most prevalent to experience cold start or injector stiction issues. The 7.3-L was produced between 1994 and 2003, while the 6.0-L was produced between 2003 and 2007. Both engines were manufactured by Navistar International and incorporated the HEUI injector system. These injectors use the engine oil to lubricate themselves and over time the sticky friction build up causes the injector to malfunction and fail. Alternatively to replacing injectors with new units, products are available that rid the injector, turbos and transmission of stiction and prevent build up. Leading engineers in the field have found in their research that 9 out of 10 failing injectors in diesel trucks are cases of stiction, and once removed are still in optimal working condition.

 

when first fired up after sitting for say 12 hrs it would run rough like it wasnt firing on a few cylinders. kind of like a gas engine with some fouled plugs. id have to let it run 10-15 minutes before it would clear up.

 

The 6.0's are primarily the motors that have this issue. Hot Shot Secret, RevX, and a couple others have some success with clearing that issue up. But, the best thing you can do to prevent this from happening, is use good quality oil, and change it regularly.

 

Just FYI....

Stiction occurs on the 6.0L, not the 7.3L. Completely different injector designs.

The 6.0L injector has an issue where the coil assembly end cap will physically "stick" when a layer of cold oil is present. Ford addressed the issue several years ago with the Motorcraft reman injectors by including a notch or channel in the end cap to alleviate the stiction. But of course you have to replace the injectors to get the problem resolved.

Additives can help with the stiction issue, but you have to ask yourself: at what cost?

Additives don't bring any real benefits in terms of engine longevity, as there is absolutely zero 3rd party proof that putting any of these products in your engine oil will increase the life span of the motor. However, in the cases of products that are supposed to alleviate stiction, they are changing the physical properties of the engine oil... changing the the oil from how it's engineered and supposed to work in the engine. And by doing so, what potential problems could you be creating elsewhere?

Something to think about. And yes for some that's a risk they are willing to take, injectors are expensive. But as for my own personal opinion, I never put anything other than the manufacturer's rated oil in the crankcase of my engines.

 

I would say that might not be 100% accurate, IMHO. My 03 7.3 would romp badly when first started.

I changed out the oil to full syn and added the stiction eliminator. Now it could have been just the oil change, but I think not as I think that is one of the reasons the PO sold it or they put to high a viscosity oil in it

Every time I looked at the truck it was always warmed up. 1st day got it home, the next am, bad romp.

In any case the hotshots could not have hurt.

Perfect now !!

 

7.3's definitely get stiction.

http://www.enginestiction.com/technical.html

 

Ok. I knew about that but can't say I have ever seen or heard the word. Glad today wasn't wasted. Learned something new "Willis"

 

Completely different issue entirely.

7.3L motors will romp in cold starts even on a perfectly healthy motor and injectors... depending on the type of oil used. The injector design of the 7.3L does not lend itself to being capable of stiction. Other issues... absolutely. Many of them will attribute to cold start problems, but none of them related to stiction.

Re-read that article, they can't actually attribute any one particular thing to 7.3L "stiction"..... because it doesn't exist.

For one, 7.3L injectors do not have spool valves. At all.

Yes 7.3L injectors have their own inherent problems, such as worn poppets and what not. But stiction is something that absolutely does not occur in a 7.3L injector.

This is the problem with 100% of all oil additive companies. They make claims, most of them are absolutely false, yet they create a perception that is passed along through owners. The website you linked is one of those guilty parties. It's nothing but advertisement with absolutely no real technical discussion involved. They can't even properly explain 6.0L stiction in that advertisement. IMO, that alone should tell you everything you need to know about a company. They can't tell you what's wrong in the first place, so how can they possibly "fix" it????

 

Gotcha. Yes, I know the 7.3 injectors use pistons, not rotation, so not likely they will gum up the same way unless there's another problem with them.