New 650 Supermoto owner with carb question?

TufBusa · Jan 30, 2006

Hello out there in Husaberg Country. I'm brand new to the world of the Husaberg. I just purchased a new FS650C three weeks ago. First motard bike I have ever owned or rode. So far, I am really having tons of fun on this heavy hitting little rascal. It does the sweetest wheelies of any bike I've ever been on. Just loves having the front wheel in the air.

However, this little sweetheart has an ailment, actually two. First it consumes oil the the degree it has me nervous. I have to add oil each time I ride or every tank full of petro. I am using the reccomended synthetic oil. I changed the oil at three hours of use just like the book says. I now have about 12 hours of riding on the meter and I have added an additional liter of oil. I'm thinking that's to much oil consumption. I run the oil near the top of the window cold. Is this correct? Does anyone else have this problem with a new bike?

Ailment number two: The enging misses and runs rough at cruise. In any gear, once the engine reaches about two thirds throttle and just cruising with no load on the engine she begins to surge and sputter. Feels like carburation. I installed a new plug. Set the gap at .025 and it runs better but far from perfect. Anyone else have this problem? Does anyone have ideas of the problem? I'd love to get some input.

I really like this bike but it's agrivating when it doesn't run right, especially when it's only three weeks old. It had had the engine miss since new, by the way.

Thanks for any input you fellas may have.

husabutt · Jan 30, 2006

TufBusa said:
Hello out there in Husaberg Country. I'm brand new to the world of the Husaberg. I just purchased a new FS650C three weeks ago. First motard bike I have ever owned or rode. So far, I am really having tons of fun on this heavy hitting little rascal. It does the sweetest wheelies of any bike I've ever been on. Just loves having the front wheel in the air.

However, this little sweetheart has an ailment, actually two. First it consumes oil the the degree it has me nervous. I have to add oil each time I ride or every tank full of petro. I am using the reccomended synthetic oil. I changed the oil at three hours of use just like the book says. I now have about 12 hours of riding on the meter and I have added an additional liter of oil. I'm thinking that's to much oil consumption. I run the oil near the top of the window cold. Is this correct? Does anyone else have this problem with a new bike?

Ailment number two: The enging misses and runs rough at cruise. In any gear, once the engine reaches about two thirds throttle and just cruising with no load on the engine she begins to surge and sputter. Feels like carburation. I installed a new plug. Set the gap at .025 and it runs better but far from perfect. Anyone else have this problem? Does anyone have ideas of the problem? I'd love to get some input.

I really like this bike but it's agrivating when it doesn't run right, especially when it's only three weeks old. It had had the engine miss since new, by the way.

Thanks for any input you fellas may have.

The carb needle controls 1/4 to 3/4 throttle openings. I would try the richer OBDVR needle. Your stock needle is a OBDVT.

Run the oil just above the lower edge of the inspection site when cold. When warm it should be close to the top. The excess oil is just being blown out the breather, through the carb and merely digested.

You should be fine

LeFrog · Jan 30, 2006

What volume of oil do you put each time?

TufBusa · Jan 30, 2006

I tinkered with the mixture control screw, tweeking it little by little each direction but had no real effect on the problem. I put it back to the factory setting.

My dealer is very new to the Husaberg Dealership. They are and have been a major Suzuki Dealership since Columbus found Plymouth Rock and their mechanics know very little about the berg. I may have to take it back and let them figure out what the problem may be?

I'll try letting the oil level drop down to the bottom of the window when cold and see what that does for the oil consumption. I usually add about 3 oz. of oil per tank of fuel. But I have been keeping the oil level up towards the top of the window when cold.

I do spend a considerable amount of time on the rear tire with the front high in the air. I have been a wheelie guy forever and I keep all my bikes oil level above the full mark for that reason. Could leaving the oil level at the bottom of the window while doing sustained wheelies lead to oil starvation or cavitation?

cwalkin · Jan 30, 2006

i had exact same problem with surges and missing on my brand new 2005 fe450e.
the dealer was unsure of problem and replaced a few parts,,stator,coil,cdi and plug and then replaced carby with one off another new bike and problem whent away,,,i always suspected that it was running lean,,,
keep oil level at lower of sight glass as if full when cold it may just be burning the excess oil

supertireguy · Jan 30, 2006

The oil level should be visible in the sight glass but do not fill above 50% of the window. Filling above 50% of the oil window will cause excess oil to blow into the breather tubes, into frame/airbox, drip down into the carb and blown back into the engine causing rough running and some smokey.

Regarding your rough running at cruise throttle settings; what pilot-jet and main-jet numbers are you running? Was your used spark plug colored dark or gray? Need to know these key items to help point you in the right direction.

Stock jetting (after dealer setup) is often a 48PJ and 180MJ. On my FS650E I also had a very similar bothersome engine stumble around 10% throttle and my sparkplug was very dark indicating a rich condition. It turned out I needed to decrease my PJ number.

If you're comfortable turning a wrench and changing the jetting in your carb your troubles should be easily solved.

Jocke_D · Jan 30, 2006

Regarding the oil level...
Like the other guys said. You are using way to much oil. The engine needs 1 liter of oil. If you over fill and then go wheeling you will, without a doubt, fill the rubber... eehhrhrhrr... "air-intake-thingy" (what is that called in english) with oil. Remove the air filter and you will probably see a small lake down there. Have attached the instructions in your users manual. Don't you have it??

Regarding the sputter this _could be_ due to excess oil clogging the carb.

LeFrog · Jan 30, 2006

If excessive oil gets into the air intake, then it may also explain the power loss.

Check my gallery for an example of crankcase vent hose modification (made to my 501 by previous owner Bobzilla).

Also the stock jetting is never good. If these guys are used to Suzukis, obviously they're used to taking bikes out of the crates and rolling them to the showroom as is.

Taffy · Jan 30, 2006

i was asked this question just last week and the arzehole couldn't even be bothered to answer the question. :evil: :evil:

so let's try a newbie this week...

Tuf, does your bike surge backward and forward on an even throttle at say 40 mph on 1/2 - 3/4 throttle?

regards

Taffy

TufBusa · Jan 31, 2006

First of all, thanks to all of you for your advise! As I said, I am totally new to the Husaberg so any info or advise is welcome.

The easiest way to find the engine's stumbling area is between 45 &50 MPH in third gear. This puts the engine in a no load situation at slightly over half throttle. The engine seems to miss and sputter constantly while the throttle is held in this position. Open the throttle and she takes off like nothing is wrong. If you open the throttle at low RPM and let the engine pull through the entire RPM range , she never misses a lick, runs great. It's just in a no load constant throttle it seems to have a problem?

I'll pull the air filter today and check for oil in the intake. I'll also run the oil level in the lower half of the site glass. Trial and error is the only way to solve the problem I suppose? I have two other friends who have the exact same bike and neither of them have these issues?

LINEAWEAVER · Jan 31, 2006

Taffy said:
Tuf, does your bike surge backward and forward on an even throttle at say 40 mph on 1/2 - 3/4 throttle?

regards

Taffy

Of course it does Taffy, as delivered they all do.

I must be careful in what I post lest I shall once again draw heavy fire from the current crop of experts.
:lol: LOL

Tuf, please feel free to email and / or phone regarding a jet kit and various tuning options. I will be happy to put you in contact with those that are currently using said product(s).

Pay attention experts and you may learn something. Light load high rpm provides excessive advance.

How much is too much you ask? Such depends on many variables including jetting. However, 50 degrees plus is possible under certain conditions 8O.

Simply disconnect the three wire TPS. Mileage will decrease, however, manners most often improve.

But hey, what do I know anyway. :lol:

[email protected]
510 223-9052

Best Regards,
Dale

LINEAWEAVER · Jan 31, 2006

supertireguy said:
The oil level should be visible in the sight glass but do not fill above 50% of the window. Filling above 50% of the oil window will cause excess oil to blow into the breather tubes, into frame/airbox, drip down into the carb and blown back into the engine causing rough running and some smokey.

Regarding your rough running at cruise throttle settings; what pilot-jet and main-jet numbers are you running? Was your used spark plug colored dark or gray? Need to know these key items to help point you in the right direction.

"Stock jetting (after dealer setup)" is often a 48PJ and 180MJ". On my FS650E I also had a very similar bothersome engine stumble around 10% throttle and my sparkplug was very dark indicating a rich condition. It turned out I needed to decrease my PJ number.

If you're comfortable turning a wrench and changing the jetting in your carb your troubles should be easily solved.

Can you say "Oxymoron"? :lol: LOL
Dale

Just to clarify as not to personally offend anyone: http://en.wikipedia.org/wiki/Oxymoron

Taffy · Jan 31, 2006

dale

i'm 100% sure i know the answer.

100%.

tuf do as i say and your bike will run fine.

drop the needle 2 (that's two) clips.

there is a small chance that you will then get a hesitancy off a closed throttle. don't panic, just try the PS underneath on a few test runs doing what i call 'roll-on snap wheelies'. try this in first and second gear. keep adjusting that PS.

i'm not calling huseys 'a piece of s...' though!!!

i never say what i do to the needle only what you do to the clip.

your bike will be fine.

regards

Taffy

TufBusa · Jan 31, 2006

I'll give the 2 clip thing a try? I should have results tomorrow?

Thanks!

TufBusa · Feb 1, 2006

I droped the carb needle two notches like Taffy suggested and took it for a little test run. It seems to be a great improvement but the studder has not completely gone away.

The carb needle was in the fourth clip of seven total. I dropped it to the sixth notch and there is only one left. I think I may drop it down one more to the bottom notch and see if the problem goes completely away. I'll take it out for an hour or so this afternoon and see just what I have now?

I got the valves adjusted. I adjusted them to 1/4 turn. That still seemed to be tight as I only got a small amount of movement from them.

As far as the oil consumption, I removed the aircleaner and just as someone said, it was pooled with oil inside. I changed the oil and only put one liter of oil back in. I'll run it cold at the bottom of the glass and see what happens?

Thanks for all the help from everybody! I'll keep you posted as to the final results.

supertireguy · Feb 1, 2006

Seems like you're on the right track. Air/fuel was too rich. Lowering the needle (aka raising the needle clip) helped lean the mix a little bit.

Your next step should be to try a lower Pilot Jet number. What PJ do you have in there now?

LINEAWEAVER · Feb 1, 2006

Supertireguy: Seems like you're on the right track. "Air/fuel was too rich". Lowering the needle helped a little bit.

TufBusa: The carb needle was in the fourth clip of seven total. I dropped it to the sixth notch and there is only one left. I think I may drop it down "one more to the bottom notch" and see if the problem goes completely away.

To Clarify:
Tuf, You lowered the clip consequently raising the metering rod. Such provides for an enriched mixture. Most likely a step forward, albeit, not the end all.

Clip position is 1 - 7, #1 being the top and consequently the leanest setting.

Best Regards,
Dale

Taffy · Feb 1, 2006

i think he means that he raised the clip from clip 4 to clip 2 and was counting the wrong way. the bike was running too rich by far and he has leaned it off.

what pisses me is that you get it right and instead of a "thanks taff and what next?" he's PO out the door and is going to listen to advice from voices on the wind and in his head...

Tufbusa-don't worry mate, i was lucky, it was a shot in the dark, a million to one, a fraudulant guess having asked my gran, i saw a quack!, it was in the tea leaves, sitting bull called.

i just make it up as i go along...

anyone can be wise AFTER the event can't they!!!

as my old mate used to say "everyone's the boss till 4pm friday...!"

regards

Taffy

husabutt · Feb 1, 2006

TufBusa said:
I think I may drop it down one more to the bottom notch

The way I interpret this statement is that he richened the mixture.

Current crop expert just chiming in :lol:

.

LINEAWEAVER · Feb 1, 2006

Hi Taffy,

I have yet to find a late model OEM Keihin equipped Husaberg which is rich on the needle.

My money is he went richer and it helped, which it should have.

Sincerely,
Dale

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