Stalling problem, odd solution

scott1206 · May 1, 2005

First of all hello folks this will be my first post here.

I had a curious problem with a 450 enduro bike. Once warm it would stall from idle if you tried to accel suddenly. One or two little blips and it would not pick up, just chuck it. Easy opening of the throttle would not cause this. It also happened comming down the box to a halt as you gave the throttle a blip to notch down another cog. This is the only symptom the bike has otherwise its tip top.

The solution was simple but maybe not obvious. Turn both fuel taps on. Since doing this, no more problem.

Does this seem odd to anyone else?

volvonut · May 1, 2005

This doesn't make sense to me. Opening up both fuel taps would suggest that it curred a lack of fuel problem, but the problem existed when fuel requirements were low. Could this have been coincidental? Air bleed intermittantly restricted or partially fouled plug? Then again I'm comming into this with all Japanese experience and new to Bergs. :wink: Volvonut

wildbill · May 1, 2005

This might shed a little light on the subject. When I was talking to a person about the 05 model Husabergs, I noticed the petcocks on each side of the tank. I asked if a person could use one side like a reserve and I was told to use both at the same time to prevent stalling and running out of fuel at bad times. So in the future use both and you shouldn`t have any problems.Good luck and have fun.

Taffy · May 2, 2005

i'll take it that i haven't been suckered with some dry scottish tumour here and really take it seriously!

there is no reserve on any husaberg. the tap is on, off or on. the factory didn't pay the extra 50p to have reserve fitted. fontana and i have had them fitted however. see the 'owners doc' for a cure.

you need to blow out the carb. it sounds to me like you have some crap in the pilot jet system so you need to do the jets behind the belmouth and of course those in the floatbowl.

i would also check the float level as well.

try silconing your HT lead into the coil and plug cap.

regards

Taffy

jadhusa · May 2, 2005

My '99 FE400 has a reserve. The fuel valve is marked RES, ON, OFF. Just thought I'd throw this info out for those running older 'bergs.

husabutt · May 2, 2005

Well my 01 470 appears to have reserve however, just this weekend in fact, I was lending it to a friends son and he ran it out of gas. I switched both petcocks to reserve which had absolutely no effect. A little fuel was added to the tank and it fired right up.

Maddel · May 2, 2005

Even though the fuel valve is marked RES, ON, OFF
switching to RES is similar to ON! It's like Taffy
said: there is no "reserve tube" inside the tank to
keep some fuel...

Regards,
Maddel

Taffy · May 3, 2005

.............so jadhusa

chances are that you don't have a little tube in your tank either!

regards

Taffy

BundyBear · May 3, 2005

Thanx for the info chaps.

It would seem the same as far back as '98. I was going to pull out the tap on mine to fix it after I ran it out of fuel several months back. At least now I won't go looking inside the tank for an elusive busted off standpipe that does not actually exist.

JJW501 · May 3, 2005

from my experience, 4 stokes which are jetted appropriately(on the rich side) with cough from sudden blipping of the throttle. it can be lessened by leaning it out a bit, but this will result in a small loss across the meat of the power and less torque.

this just from my experience with 4stroke 'bergs and ktm's and one yamaha(yamaha not effected as badly i might add).

note for my theory....will only cough from slow idle when throttle is applied very quickly, and not once engine has even a few revs on.

anyone else experienced this/disagree????

Have Fun
Jeff

Taffy · May 4, 2005

well this might sound odd but i found that to start the taper at 41mm really hooked the bike up. so if the taper start was 38mm i had it on clip 3. etc etc.

you can only say it's rich in the middle by testing because if you're running rich then dropping the needle leans it off!

regards

Taffy

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Stalling problem, odd solution

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