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Clean or replace engine air filter?

- - - - - LR4 air filter maintenance dust

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9 replies to this topic

#1
mirowsky

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Since my last LR4 scheduled maintenance I've done 3 or 4 extremely dusty runs on dry dirt roads. The dust caked up on the rear, infiltrated the doors and such. Car wash and dust rags got most of it, but left me wondering about the air filter.

 

Do I need to clean the filter? Or replace it?

 

What is your experience, practice and advice?

 

Being from Florida, I've never seen dust like this. I  know the effect of dust clogging a chain saw filter (no power, hard starts.) 

 

Is dust in the engine filter killing millage and power in the Land Rover?

 

Is this the only filter I have to worry about?

 

Or am I worrying for nothing? Can I leave the filter as it is for 6 months to a year for the next scheduled maintenance?



#2
DHappel

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I find my filter gets very dirty on dusty runs.  I generally remove it and used compressed air to blow it out (reverse direction) after each dusty trip.  It's shocking how much dirt is in that thing. 

 

I have an extra filter waiting to go in.  Not sure when I'll switch to it as the current one is about 18 mo old, but probably this year.


Don
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#3
GraemeWare

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Since my last LR4 scheduled maintenance I've done 3 or 4 extremely dusty runs on dry dirt roads. The dust caked up on the rear, infiltrated the doors and such. Car wash and dust rags got most of it, but left me wondering about the air filter.

 

Do I need to clean the filter? Or replace it?

 

What is your experience, practice and advice?

 

Being from Florida, I've never seen dust like this. I  know the effect of dust clogging a chain saw filter (no power, hard starts.) 

 

Is dust in the engine filter killing millage and power in the Land Rover?

 

Is this the only filter I have to worry about?

 

Or am I worrying for nothing? Can I leave the filter as it is for 6 months to a year for the next scheduled maintenance?

 

Certainly you should take it out and bash the dust out of it.  To be honest, at $40 for a Mann replacement, I'd change it more often than less often.  Cabin air filter too (also about $40).  Half that price for an aftermarket one.

 

Graeme


Graeme Ware -- San Carlos, CA

1990 Range Rover Classic - LT230 Transfer box, Warn winch, 2" lift, 235/85-16 Dunlop MUD Rovers, "Blue Submarine"
1996 Discovery 1 (R380 Manual Transmission, Ashcroft under-drive, RoverWare rear bumper, 33x12.5-15 BFG ATs) -- we call her "Katrina" -- Fordyce 7.5 mile survivor
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other assorted British pot metal ...


#4
DiscoChef

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A couple of years back, while on the Black Desert trip my brand new filter got so full of dust that the engine stalled and I had no idea what it was, by process of elimination, i removed the air filter and it was caked on with fresh dust (with plenty of space between me and the truck in front), cleaned and kept going but it was really scary not knowing why the engine kept stalling.

I now always carry a spare one.

Same with cabin filter.


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#5
lilcrawler

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I would just go ahead and replace it if it is dirty. $40 is not all that much in the long run, and will help mileage, and engine health. I inspect mine after every trip, and usually replace it every four trips. A visual inspection, maybe some compressed air should be enough after a trip. Just use your judgement on replacement.

 

Keep in mind I have a snorkel with a precleaner from a tractor. My precleaner picks up a lot more dust than you would think, and my snorkel keeps the intake above most of the dust, so you might have to replace your air filter a bit more often than I do.


Tyler
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I get below 15 mpg on Fuelly!
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#6
DavidW

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I do the same thing.... use my air compressor to blow them out after every trip and then change them fairly often.


Posted Image
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#7
Disco2Guy

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Time for a new filter. Sadly, those LR service schedules probably don't account for very dusty trails. If my filter is older or has been on a few trips where the dust wasn't that bad, I'll plan to just swap in a new one at the first highway fill up going home. If the filter is fairly new, I'll just blow it out after filling the tires. Keep the old one and bring it as a spare. There have been times when the air box clip was caught between the lid and housing and got mud on the filter.


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#8
lilcrawler

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Time for a new filter. Sadly, those LR service schedules probably don't account for very dusty trails. If my filter is older or has been on a few trips where the dust wasn't that bad, I'll plan to just swap in a new one at the first highway fill up going home. If the filter is fairly new, I'll just blow it out after filling the tires. Keep the old one and bring it as a spare. There have been times when the air box clip was caught between the lid and housing and got mud on the filter.


I actually think that's what killed my MAF a few months ago at Hollister. I drove into a puddle, it came up over the hood, and I exited with no power. I had to take a tow truck home :(. Moral of that story is to check for proper install.
Tyler
2004 DII- Not modified heavily enough

I get below 15 mpg on Fuelly!
Posted Image

#9
mirowsky

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Thanks folks. I'll blow out the old filters and order a new set ASAP.

 

John


  • erinw.rrc likes this

#10
ROVRMAN2

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Don't forget to clean your MAF. After the Oregon trip I replaced the air filter and cleaned the MAF. I never knew how dirty the MA F could get.
Engine sounds smoother but haven't checked out the mpg yet.
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AlCan,Dalton,Edgerton,Top of the World,Cassiar,Baja Sur Highways approved.





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