How to stop the water plague?

mikst · Oct 28, 2004

Hi,

I haven’t done this but I have thought it about now and then. Have anyone done a good solution on the water in carburetor problem? When you go through pools of water with speed the water follow the frame to the air filter. I assume it will come from the steering head or from the engine and up under the tank. This is very annoying and happens too often. You cannot go on the rear wheel in every situation, sometimes the front wheel must down in the water. It’s hard to change the design.

t-jet-tim · Oct 28, 2004

Silicone seal the throttle cable and
choke cable boots etc.Run your vent
hose up high and make sure your
crank case vent is routed up high
also.Also avoid mudholes over 3 foot
deep.

tm-enduro · Oct 28, 2004

Run a big fat bead of silicone between the air filter and the fuel tank. That should divert any water around the filter. I can post a photo if required.

tm-enduro · Nov 12, 2004

see photo in my gallery

mikst · Nov 13, 2004

Okay, I will do something similar when Dale has fixed my camshaft.

wildbill · Nov 18, 2004

tm-enduro said:
see photo in my gallery

I see how that would work for the top filter.How would you fix the problem for the side filter?My bike a Husaberg FE501,96 year model has the dual filters.The plastic guard on my bike has become so warped that I had to remove it{was preventing the air filter from making a secure fit.}I can still mod it if have to.Any ideas?Thanks.

VIKING · Dec 1, 2004

Hi Mikael had the same problem this is how I solved this problem on the
back bone of frame I affixed 19mm adesive closed cell foam(found at hardware store) around tube in front of filter and from there on each side of tube below exsisting open cell foam run foam all the back to the round
vertical tube from swingarm/engine then I use duct tape to tape off sub
frame extending from filter rearward aproxemently 15cm and if you are
using dell ortho carb I seal union between adjuster and throttle cable housing with schrink tubing and the same for choke cable if the conditions
are extreme (small lakes) I duct tape area filter and small gap between
tank and seat after doing these mods I had no water in carb and one last
thing I use isopropyl alcohol in the fuel draw out any water that may have
from who knows where
Happy trails Per

Taffy · Dec 2, 2004

Mikst

i think your question is wrong from the beginning!

the water in the carburretor is from the breather pipe and not from running down the frame!

although i'm on keihin carb i also had this trouble and then went to a '1-into-2' floatbowl breather pipe. one pipe went up to the 'earth-wire carousel' and the other went down the back of the engine.

i've been racing through really deep water since and it was great-no problems.

i've been washing my bike with a plastic bag laid across the top of the frame mouth and re-screwing on the air filter (knowing that i'll be wasahing it properly when i get it back in the garage) and the water is still in the 'sock'!!!!

reason for this i think is because the keihin is 5mm shorter and so the 'sock' is tilted and not a perfect seal.

the whole sorry thing is pathetic i'm afraid! needs a new idea.

regards

Taffy

mikst · Dec 2, 2004

Hi Taffy,

Thanks for the suggestion.

Is ‘sock’ similar to air filter tube?
I have never been racing in deep water. The first time I got problem I went through six pools of water. The deepest was around 15 centimetres. Since I had problem to get it running I asked Husaberg if it could be an electrical problem. I was told that if you go through water with the throttle open the bike could suck in water. And yes, the throttle was wide open in the second and third gear. The second time was after a pool of water with a depth of less than 25 centimetres.
Also with the throttle open.

Depending of the angle of the bike when you hit the water you get more or less wet. I am a clumpy rider so the water often comes from the front fender and hit me in the chest. Since you never know how deep the pool of water is I have a few times got water all over me. At these times the water depth have been up to the front axle.

I still believe that the water follows the frame and the bike sucks it in since the air filter sometimes is wet. If the throttle isn’t open the bike doesn’t suck the water in. The space between the frame and the fuel tank is a perfect guide for the water from front and beneath. The engine should cover the carburettor when the water comes at high speed from the front wheel. If the water comes from the air tube the bike should suck in a load of dust when riding in dry conditions. Shouldn’t you get forced to blow the carburettor often if the air tub doesn’t seal perfect?

Regards,

berger · Dec 2, 2004

mikst,
You can check out the "water dam" for the air filter in TM-enduro's gallery.
(edit)Sorry, I see he beat me to it.

Taffy · Dec 2, 2004

ok

by the sock i mean the 90 degree tube twixt carb and frame.

diagnosing
wet at bottom of sock = airfilter problem
muck in floatbowl = sucking up from breather
neither but dies still = electrical

my money is on the second one.

i had water in the electrics and squirted silicon jell or 'mastik' as i call it every where in all the connectors. pull them off, pull the plug cap off, pull the HT lead off-everything. splodge the mastik in all connections and then reconnect.

next put a 'shepherds crook' in the top of the wiring harness that comes up from the ignition cover and zip tie to stop water going down.

next, do the 1 into 2 under the carb floatbowl.

do this and you'll have got rid of all the reasons that I know of!

PS i have a hole in the bottom of the ignition cover for water to drain from and the SEM ignition is covered in vasoline.

i'm sure that you've read this here

regards

Taffy

mikst · Dec 4, 2004

Now and then I check the sock and sometimes it's wet.
However, these times I have had no problem so I don't know exactly what cause the problem. Probably a mix of conditions which must be fulfilled to get problem.

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How to stop the water plague?

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