I just changed air filters in my 2000 f250 superduty diesel and the owners manual says to hit the reset button after changing the air filter. It won`t move and shows about 75 percent on the guage do you guys have any ideas, Thanks Randy

 

Things do get stuck. Try tapping the side of the indicater while holding the button in. Was the indicater up that high before you changed the filter? Might want to change it a little sooner next time. Just my 2 cents.

 

Actually, changing the filter too soon will cause more damage than not. A dirty filter traps more dirt particles than a new filter. Changing the filter too soon will introduce loose dirt into the intake system due to removing the filter. And, the engine will be breathing a less filtered air more often since the filter is new. NEVER, clean a dirty filter with compressed air! Doing this will only introduce small holes in the filter media and this is not what you want. Make sense?

 

Well, the only thing I agree with is not using compressed air to clean the filter.

 

Rob nc , Let me ask you this , How will the loose dirt get into the intake with the engine off ? An old filter catches more dirt sure , thats because its dirty & air cant pass thru it as easily , the dirt builds up , thats why air filters need to be replaced . What you say makes no sense unless Ive misunderstood what you are saying .

 

It all makes perfect sense. There are two sides to an element, a dirty side and a clean side. The dirty side is typically on the outside of the element. Every time you open the air cleaner housing and remove the element, you run the risk of shaking loose dirt that has accumulated on the outside of the filter into the clean side of the housing. Unless you clean the inside of the housing each time you change the filter, this loose dirt will enter the engine. It is also not a recommended practice to visually inspect the element. The seal on the element comforms to the housing when it is installed as a new element. The likely hood of installing the element EXACTLY in the same location is remote. You can have small seal leaks at areas where the seal doesn't fit the housing properly.

As far as a dirty filter cleaning better than a new one. All filter companies will tell you this. Filter media is nowhere near perfect, afterall, it's manmade. This media will have small, micron sized holes that will become plugged with larger dirt paricles, thus causing the filter to work better by not allowing smaller particles through it. The Truck Maintenance Council has a paper on this very subject. I cannot post a link to this information since it is for sale.

I cannot tell you how to maintain your engine, I can only make recommendations. Based on information we use when designing air intake systems, the information in my post is valid.

 

I would hope that the filter housing is wiped out each time you change the filter. That is a no brainer.
So you are saying that the sealing material that is used is that inferior that it won't reseal? Maybe.
Ok, you got me thinking about the "All filter companies will tell you this." Since we have a contract with Wix, I decided to call them and talk to one of the engineers of the filters.
I asked him about that one comment. He laughed of course.
He said, if you don't care about performance, then yes, a old filter will theoretically trap more dirt, but it will also strain the engine, because less air is able to get to the cylinders and performance will suffer.
If you design air intake systems, you would know that while more dirt in the air filter traps more dirt, it also effects the air intake of the engine and diesels are far more particular about lack of air than gas engines.
By the way, please tell me who you design air intake systems, so I can be sure not to purchase from them.

 

Hey why doesn't everybody quit being snotty toward one another and try to be helpful to those that use these forums. I realize it's just my big ol' opinion(and definately not the only opinion on this topic), but it's the Holiday season for cryin' out loud. Some of these threads can get ugly in hurry.

 

There's no point in arguing with a know-it-all, but I will have my last word.

I design air intake systems for class 8 highway trucks. Our designs must conform to several criteria, one of which being maximum pressure drop across the whole system with maximum dust load. The reason for the filter indicator or pressure drop indicator is to tell the operator when it's time to change the element. When the indicator reaches the red zone or 100%, this indicates the maximum allowable pressure drop in the system before engine performance is compromised and component damage occurs. Changing elements before this zone is reached is simply wasting money. Some consumers are utilizing a maintenance schedule whereby the filter element is changed at a specific time regardless of condition. A properly designed system will allow this service interval to be reached prior to the actual need of replacement. The owners manual of any vehicle will indicate suggested service intervals, depending on operating environment.

 

I remember a time when the holiday season started after Thanksgiving day, not before Halloween!!!

In reguards to this air filter thing. I just bought a new filter for my '01 PDS. It had about 8,000 miles and let me tell you it was very durty(No dirt road driving). Just the filter not the inside of the housing. Ford(Motorcraft) has changed the design of the filter, it is a couple of inches thicker. This tells me one thing, Power Stroke owners are not changing there filters enough. So Ford is protecting there @$$. The guys at the dealership agree, they have seen some air filters that were in some pretty bad shape. So, Motorcraft is now going with a even thicker filter. Our engine NEEDS air in a very big way. The turbo will get the air anyway it needs, even if it means sucking in the clogged filter and box. I think they call this dusting the engine.

On a side note I changed my wife's filter on her Focus ZX3 at 20,000 miles. It looked nighting like my Power Stoke, it could have gone another 20,000 miles. But it gave me something to any.

Fuel, AIR, and Ignition....we need all three.

Rick

 

Please cease the pointless bickering and the bypassing of the language filters.

Thanks

alanscott
Volunteer Moderator