Fuel Filter
Road Master
Joined: Jun 2018
Posts: 764
Likes: 370
From: Winnipeg
I ran a PINGLE fuel filter on my old sporty for years and years with no problem at all. Just remember to crack it open and clean out the bronze element with clean gas (i did it whenever i was changing oil- or any other maintainence--about twice or three times a year). It did catch alot of crap.
if it ever got plugged on the road- just remove the element.
if it ever got plugged on the road- just remove the element.
Road Warrior
Joined: Sep 2006
Posts: 1,826
Likes: 87
From: Cookson, Ok
On a carbed bike there is no fuel pump and gravity won't push the fuel adequately through an inline filter, especially when the tank starts to get low. If you happen to have a filter that does flow, it ain't doing much filtering.
Thread Starter
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Grand HDF Member
Joined: Apr 2007
Posts: 3,728
Likes: 3,073
From: Brighton, MI
So I gotta ask, if the extra filter gets clogged up from use, and it is better to run without one because it will eventually clog up, do we really want the stuff that is clogging the filter to run into the carb/engine if we don't run an extra filter??? YD
Seasoned HDF Member
Joined: Aug 2007
Posts: 8,202
Likes: 3,089
From: NW AR
Those filters I listed are pretty small. If you are having a problem with fuel quality, keep a spare with you. They are also pretty cheap and available at any auto parts store. I keep a few in stock and use them everywhere. You can blow right through them. They are low restriction. I even use them on my chipper shreader, which was having a problem with crud gunking up the carb. No problems since. Another use is for the end of a fuel tank vent tube. Not really needed on our bikes, but I use them whenever the evap canister happened to "fall off" on a car or truck.
Seasoned HDF Member
Joined: Jun 2015
Posts: 10,302
Likes: 7,780
From: West Central FL
In-line fuel filters are designed mainly for use with fuel pumps. It's been my experience that the filter is so fine that after a few tanks of gas once the level in the tanks get below 1/2 the weight of the gas can no longer puish its way through the filter by gravity alone. On cars with manual or electric fuel pumps they work fine but I've tried them no less that three times on bikes and they failed all three times.
If the furel you're getting is so dirty or if your tank has so much debris in it that the intank filter gets plugged up fast I suggest you either switch stations or drain and clean out the tank.
If the furel you're getting is so dirty or if your tank has so much debris in it that the intank filter gets plugged up fast I suggest you either switch stations or drain and clean out the tank.
Thread Starter
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Grand HDF Member
Joined: Apr 2007
Posts: 3,728
Likes: 3,073
From: Brighton, MI
In-line fuel filters are designed mainly for use with fuel pumps. It's been my experience that the filter is so fine that after a few tanks of gas once the level in the tanks get below 1/2 the weight of the gas can no longer puish its way through the filter by gravity alone. On cars with manual or electric fuel pumps they work fine but I've tried them no less that three times on bikes and they failed all three times.
If the furel you're getting is so dirty or if your tank has so much debris in it that the intank filter gets plugged up fast I suggest you either switch stations or drain and clean out the tank.
If the furel you're getting is so dirty or if your tank has so much debris in it that the intank filter gets plugged up fast I suggest you either switch stations or drain and clean out the tank.
I suppose the paper element type is better than the sintered bronze/brass type filter when you consider flow. I assume the ones Dr Hess is talking about are the disposable paper element type of filter.
I guess I'm just gonna run a filter, keep some spares and spare 1/4 hose in my bag, and play it by ear. YD
I guess MoCo does not even put a liner in the tank anymore based on some of the posts I read because this problem is so common. YD
Dirt don't hurt
Joined: Jan 2011
Posts: 21,066
Likes: 4,568
From: Haslet Texas
Mine uses a 3/8" hose.
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Grand HDF Member
Joined: Apr 2007
Posts: 3,728
Likes: 3,073
From: Brighton, MI
Yes 1/4, even bought a spare used OEM petcock and it is 1/4, put a new brass inlet to replace the plastic one on the CV carb and it is 1/4. 1/4 ID tubing is what I use...3/8 is oil lines on my bike. YD
Last edited by Yankee Dog; Sep 11, 2018 at 06:42 PM.
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Dirt don't hurt
Joined: Jan 2011
Posts: 21,066
Likes: 4,568
From: Haslet Texas
The only 1/4" I have is the crossover tube on the bottom front of my tanks.
Road Master
Joined: Jul 2010
Posts: 976
Likes: 212
From: northern nj
I have cleaned the inside of tanks using small pieces of chain or nuts and washers . put them in and keep turning the tank , no outside damage but removes most of what is in there . OLD SKOOL !!!