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03-24-2018, 05:27 PM
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#1
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Senior Member
Join Date: Jan 2018
Location: SARASOTA, FL
Posts: 290
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Advice on 8.1 Air Filter Change Out
Still trying to feel my way through the ownership and learning process. So today I changed my oil, serviced and changed the Genny oil and filter. I went to NAPA picked up one of their “GOLD” air filters to change it out. When I crawled up under the filter I was concerned about how to extract the current filter seeing no easy way to open the intake box housing. I also saw a sticker that stated the filter (K&W) contained inside the housing was semi permanent to be changed at 50k and 100k. So I backed off this task for the time being.
From what I have read this maybe a wet filter and is not a favorite of our forum members. So can I change this “wet” filter out for a dry one? Also how do you open the housing? Any videos? I’ve searched YouTube without success. Thx.
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2002 - Fleetwood Terra 32, 8.1 L; 496 Vortec GM on a P32 Workhorse chassis. 2014 Ford Fiesta SE , AT as my TOAD.
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03-24-2018, 05:43 PM
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#2
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Senior Member
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 19,925
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Most K & N filters are put in place of the original air filter box. You might try looking to see if you have the original filter enclosure that a regular paper filter would fit. I suspect it was all yanked out to put in the K & N filter. You might have to try to find a replacement filter housing.
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Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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03-24-2018, 07:14 PM
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#3
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Senior Member
Join Date: Feb 2003
Location: Jarrell, TX 76537
Posts: 4,501
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Air Filter A917C
There are 3 clips along the top of the filter box. Release them and lift the front part of the air box out of the channel in the rear part of the air box. Remove/replace the filter and rejoin the 2 parts of the air box.
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Dale
AKA - Oemy
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03-25-2018, 07:11 AM
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#4
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Senior Member
Join Date: Oct 2015
Location: Brighton, MI
Posts: 775
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Quote:
Originally Posted by BFlinn181
Most K & N filters are put in place of the original air filter box...
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I've seen a number of K&N filters and they were installed in the original filter box. Not that there aren't some with a new filter box, just saying I don't think it's all that common.
Removing the cover can be a struggle. The tube going from the cover to the MAF sensor doesn't give you much wiggle room but it will come off.
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Hank & Lynda
2003 Winnebago Adventurer 35U, Workhorse W22
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03-25-2018, 07:43 AM
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#5
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Senior Member
Join Date: Nov 2013
Posts: 5,774
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Advice on 8.1 Air Filter Change Out
If it has a K&N, I would pick it a can of MAF Cleaner at Autozone and remove and clean the MAF while you are in there. There are two screw hose clamps and an electrical connector that need to be loosened/disconnected to get the MAF out. It’s relatively simple once you remove the filter housing and it actually makes filter installation easier with it apart.
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2015 Tiffin Phaeton 40QBH
2018 Chevrolet Colorado Toad
Roadmaster Tow Setup
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03-25-2018, 10:37 PM
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#6
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Senior Member
Newmar Owners Club Tiffin Owners Club Workhorse Chassis Owner
Join Date: Jan 2015
Location: Byhalia, MS
Posts: 3,368
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If it has a K&N filter, I'd throw it away and go back to an OE filter. But thats just me.
jt
__________________
2019 Tiffin Phaeton 40IH
2005 Newmar Kountry Star Gas (Sold)
2022 JL Wrangler 4xe or 2017 Harley Ultra in tow
JT, Em & the boys, Kong & Baxter (rescued grey tabbies)
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03-26-2018, 03:00 AM
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#7
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Senior Member
Join Date: Jan 2018
Location: SARASOTA, FL
Posts: 290
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Thanks all. Changed the K&N out in about 10 minutes or so. I'll tackle the MAS later (good thought on it). Once I found the clip location it was easy except for the dirt/debris falling in my mouth (had glasses on). I'm gonna clean and stow the K&N in case I need it in a pinch at a later date/time.
__________________
2002 - Fleetwood Terra 32, 8.1 L; 496 Vortec GM on a P32 Workhorse chassis. 2014 Ford Fiesta SE , AT as my TOAD.
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05-26-2018, 08:21 AM
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#8
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Junior Member
Join Date: Jun 2013
Posts: 11
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It is there
I have just changed the air filter in my '07 Workhorse chassis. they certainly didn't make it easy and I now don't have a center clip on the housing. seems they could have lowered the housing about a 1/2 inch so the clips could move freely. But it is done and I won't have to do it again for a while. Now to get some cleaner for the MAF, though it doesn't seem to be in bad shape.
2007 Allegro Bay 38TDB on a Workhorse chassis
2003 Honda Element
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05-26-2018, 05:54 PM
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#9
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Senior Member
Join Date: Jun 2000
Location: Martinez, CA. USA
Posts: 362
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If your air box is like mine, located directly in front of the passenger side front wheel, keep an extra filter in the coach.
The air box gets a direct spray of water when driving on wet roads and will saturate your filter creating performance issues.
I would seriously like to meet the engineer that designed that air intake system and punch them in the head.
I have since made a sheet metal box that covers the air filter box to alleviate this issue. Will see this winter if it works.
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05-27-2018, 06:28 AM
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#10
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Junior Member
Join Date: Jun 2013
Posts: 11
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Mine is in the same location. Let us know if your modification works.
for ease of access, they could have just turned the box upside down so that the clips were on the bottom rather than 1/2 inch below framing.
I like your suggestion about carrying an extra air filter.
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05-27-2018, 06:47 AM
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#11
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Senior Member
Join Date: Dec 2014
Location: East Tennessee
Posts: 980
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Quote:
Originally Posted by Fyrflie
If your air box is like mine, located directly in front of the passenger side front wheel, keep an extra filter in the coach.
The air box gets a direct spray of water when driving on wet roads and will saturate your filter creating performance issues.
I would seriously like to meet the engineer that designed that air intake system and punch them in the head.
I have since made a sheet metal box that covers the air filter box to alleviate this issue. Will see this winter if it works.
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I don't think the water gets in there from the spray...it runs down inside the Tuba that faces the typhoons. There are mods to that on Omey's website too.
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2016 R-Pod 176T
2002 Avalanche Z71 Tow Veh
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05-27-2018, 10:23 AM
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#12
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Senior Member
Join Date: Jun 2000
Location: Martinez, CA. USA
Posts: 362
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So far I haven’t found any water in the Tuba or the surrounding area.
Mine is situated in a good spot up behind the front cap well away from the grill opening.
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09-06-2018, 11:17 PM
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#13
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Junior Member
Join Date: Jan 2013
Posts: 2
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Anyone ever find a video of a 32v 8.1L Air Filter change out? Also, what is MAF?
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09-06-2018, 11:58 PM
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#14
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 13,138
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Quote:
Originally Posted by jhoppin
Anyone ever find a video of a 32v 8.1L Air Filter change out? Also, what is MAF?
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The Mass Air Flow (MAF) sensor controls the mixture of air and fuel sent to the engine to be burned.
If that mixture isn't correct you will start having P0150 and P0151 check engine lights which indicate a O2 sensor problem.
The O2 sensor has determined the exhaust is causing pollution which turns on the check engine light. The O2 sensor is not bad, in fact it is doing it's job.
What's bad is the MAF sensor and it needs to be cleaned with spray on MAF cleaner or replaced.
If you use a K&N air filter and over oil it you will contaminate the MAF. The MAF is located directly after the air cleaner.
The recommended way to clean the MAF is to remove it and spray it with canned MAF cleaner.
I don't remove mine, I just spray it with the engine running using a full can. I do that on a yearly basis and replace the air filter at the same time. I use a Fram air filter from Walmart.
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2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Criticism is easier than Craftsmanship
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