I like having an inline fuel filter. How can you tell if the filter will pass enough fuel? If the filter fits the fuel line are you good? I see the little pancake ones that would look right on a lawn mower and probably still fit my hose but will they pass enough fuel not to starve my KLR?
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how to spec a fuel filter
- Thread starter timtune
- Start date
TK4
Well-known member
The bigger the better. If it fits the fuel lines and you have room somewhere to stuff it, go for it.
I like this style for cheap and cheerful (~$5). Depending on location, wrap in tinfoil to insulate it. According to store specs, the top one is good for 80 hp. Tons more surface area than the flat disc filters. The fram one I showed is bigger (5/16" hose, ~2" x 4") and according to fram is happy on many 300 to 400 cubic inch engines.
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lowes/rona/wherever. I couldn't find a manufacturer page or I would have referenced that. I just searched for inline fuel filter. I use the small one on the mini which is making over 100 hp without issue. I may go larger for the replacement just because I can, I have the space. You don't get to run at full throttle for that long anyway so I've never felt that it was starved. It may be different on a track, but that's not where I am.
Trials
Well-known member
Carburetor fuel filters. (plastic)
No good on fuel injection motorcycles, they can't take the fuel pressure, fuel filters on fuel injected bikes are enclosed in metal canisters.
Water ruins the treated paper inside any fuel filter, if you get a lot of water or ice collecting in your fuel filter it's time to replace it.
No good on fuel injection motorcycles, they can't take the fuel pressure, fuel filters on fuel injected bikes are enclosed in metal canisters.
Water ruins the treated paper inside any fuel filter, if you get a lot of water or ice collecting in your fuel filter it's time to replace it.
TK4
Well-known member
OP has a KLR650, unless its a 2022 its carbureted.
EFI bikes have a vehicle specific fuel filter usually metal encased. You can't see inside, replace according to service manual recommendations.
TK4
Well-known member
Beg pardon ?comprehension difficulties?
Trials
Well-known member
Well here's what you do, your carburetor operates off gravity feed, you disconnect the line where it normally goes into the carburetor and point that into an empty fuel container. Let it spill into the container for one minute and you can see how many litres per minute your fuel supply is.
You need to read the Big manual, not the owner/operator manual.
I would guess screen in the tank (if anything).
I haven't seen anything in them either, but I also haven't flow tested new vs used to see if they have caught some small bits. My theory is if it doesn't harm performance, is cheap and might help, it is worth having. If I get a bad tank of gas while out on a ride, I would rather it gets caught in a filter than plugs up my carbs.
Far as I know the kwak just has the screen in the tank (carbed 2006). I like to install filters on most stuff - cheap insurance.
KLR is the same as my sled. There is room for a filter but then you have to get creative fitting the hose and bends in w/o kinking the line. On my sled I actually bent copper tube in a tighter rad and installed that in the line because there wasn't room for the generous rad the plastic tubing needed.
KLR is the same as my sled. There is room for a filter but then you have to get creative fitting the hose and bends in w/o kinking the line. On my sled I actually bent copper tube in a tighter rad and installed that in the line because there wasn't room for the generous rad the plastic tubing needed.
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