Is this normal for a standard air filter?

[Mozzer]

Just checked the intake filter, it looks to be pulling nearly all the air from the end of one section of the filter, is this what others see when their filter gets dirty?

 

Looks like a cone filter sitting in the airbox would flow better but doesn't look like an easy way to attach to MAF sensor section.

 

The photo looks oily but it's just dirt.

 

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[HeySkippyDog]

Mine had a more even distribution, but the outside edges were cleaner than the center.

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[TXGREEK]

It’s caused either from box not having been tightened well enough or filthy environment. The filters always have an area worse than the other. I’d change your filter every 15k miles unless you get a K&N which I don’t ever clean and respray, I just swap it out for a new one every year for pc of mind


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[Bob2C]

I have always used K&N filters in my cars over the years. Never had a problem. I usually clean them around 40k miles and re-oil. No issues with with sensors in all my years. The key is not to put too much oil.


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[Fuelie]

How many miles on that filter?

Tom

[Mozzer]

Thanks for the replies, the lid was tight & no sign of being pinched or anything.

The dirt on the end does line up with the intake from the wheel well. I'll stick another paper filter in for now so I can see if anything changes.


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[Mozzer]

How many miles on that filter?

Tom

20,000 kms, it does see some gravel roads every few weeks.

 

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[TXGREEK]

Thanks for the replies, the lid was tight & no sign of being pinched or anything.

The dirt on the end does line up with the intake from the wheel well. I'll stick another paper filter in for now so I can see if anything changes.


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If not buying a K&N then don’t buy the heavy duty one, buy a standard filter cause the heavy duty ones constrict air flow, not allowing proper performance and lower mpg’s


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[HeySkippyDog]

The owner's manual specifies a pretty long service interval for the engine air filter. It's 50,000 miles.

If you drive in dusty areas a lot, I would NOT use that long of an interval.

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[BigBlueLB756]

Two hints about re-oiling a wet filter:

1.  Only apply oil to the face of the filter that will be away from the MAF,

2. Before installing the filter, pack it in some paper from your shredder for a couple of hours to wick away any excess oil.

 

Then you will be GTG.

[Mozzer]

If not buying a K&N then don’t buy the heavy duty one, buy a standard filter cause the heavy duty ones constrict air flow, not allowing proper performance and lower mpg’s


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I haven't seen heavy duty filters before in my general parts store but thank you for the warning.

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[Grumpy Bear]

Girl screams, 'What rule is there against girls getting into the Boy Scouts'.  Boy says..."It's kind' a in the name".

 

Air filter's job is???? To filter air! The OEM AC-Delco is one of the most efficient filters to select from and....the most restrictive. A more restrictive filter will hurt nothing UNTIL it's capacity is exceeded and unless your motor runs ROUTINELY over 90% loaded, you will notice no difference in either power nor mileage. I won't 'foul up you motor', AFR wise any more than one that flows more and filters less. What an inefficient filter will do is shorten your motor life. 

 

On street motors I run the factory fit. On race motors on pavement I run a bell and live with the results of not filtering at all. 

[KARNUT]

I can relate. I used K&N on almost every truck I owned. Drop in or the the whole thing, oiled filter. Then I realized I was wasting money. Who lives at full throttle? Only took me till I was 58.


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[16LT4]

I refuse to buy that K&N junk.  Snake oil drummed up by marketers looking to make a buck; filtration and flow rate graphs are inverses of each other.  No matter how careful you oil the thing, oil WILL coat the MAF sensor. 

 

Don't take my word for it... take a technician's.  Granted, he's a Ford tech, but from my time in (and under) my F150 (along with most every car brand sold in the US, I will attest this guy is one of the best techs I've ever come across.  And being a Ford tech means he's definitely got LOTS of wrench time and experience!

 

 

[TXGREEK]

I refuse to buy that K&N junk.  Snake oil drummed up by marketers looking to make a buck; filtration and flow rate graphs are inverses of each other.  No matter how careful you oil the thing, oil WILL coat the MAF sensor. 
 
Don't take my word for it... take a technician's.  Granted, he's a Ford tech, but from my time in (and under) my F150 (along with most every car brand sold in the US, I will attest this guy is one of the best techs I've ever come across.  And being a Ford tech means he's definitely got LOTS of wrench time and experience!
 
 

It’s true that you can over Oil one of the K&N filters but almost 30 years of using them with zero issues. You know, you can also buy a performance dry filter. You’ll always have the auto industry think less of anything in competition to their crap. Especially being that an enormous amount of aftermarket products completely out perform ALL Factory installed parts.


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