| Author | Message | ||
     Bluzm2 |
Dave, I'll bet it's the TPS. To say it's been "hot and humid" here is a gross understatement! BJ | ||
| Holligandave |
Brad, On a ride Sunday I thought my leg was going to catch fire!! HOT HOT HOT I'll explore the TPS solution... Thanks Dave | ||
| Robertf |
Hey guys, looking for suggestions, ideas... 2000 M2, purely stock, 11,000 miles. Last month or so, engine has pronounced surging at cruising speeds with small throttle opening. Feels like it's running out of gas. I'm not certain, but I think it's carb-related. Most apparent at about 75-80 mph, 3500-4000 RPM, 1/8-1/4 throttle. Higher speeds, no problem. Twisty roads with lots of throttle changes, no problem. Track day at Buttonwillow, no problem. It's somewhat annoying on the freeway, however. I'm wondering if I've got a clog somewhere in the carb, and I wonder if the symptoms suggest a specific area to examine. Just added a can of Berryman's fuel treatment/carb cleaner yesterday. No change after 80 miles (so far.) I may just pull the carb, clean everything, and rejet according to specs at the top of this page. Ideas? RF | ||
| Hans |
Robert, Not, again, the tank vent: Sticking after tipping the bike over or overfilling it above the skirt in the tank? | ||
| Robertf |
Hans, No, it's not the tank vent. That was the first thing I checked, and it *was* sticking, but not causing this problem. Anyway, the tipover valve has been defeated, and the vent is clear, but the problem remains. The air filter is nearly new, and I've replaced the spark plugs. No change. I was amazed that the new improved tank vent was sticking, just like the pre-recall vent. An interesting part, when you open it up. Clever, but unfortunately, it doesn't always work. Robert | ||
| Seatonii |
I have a 00 X1 with a race ECM, V&H pipe and a K&N. I bought the bike used with 3850 miles on it and now it has about 4500 on it. Well my question is about remapping the race ECM. I don't really have an issue with the bike although I do not think is has quite the power I feel it should. I was wondering if remapping the ECM would make much of a difference in performance or driveability. The race ECM in my bike was put in when the bike was bought new in Dec 1999. I was also wonder if it is true that the dealer would need to send it back to the factory to remap it. Is this true? Well any input would be nice. Thanks Dwight | ||
| Tripper |
Seatonii: install the entire RACE KIT. It takes care of a major torque dip that occurs where you need it the most. | ||
| Bomber |
All . .. . just put a V&H can on my 2000 M2, with a Forcewinder air cleaner and Dynojet carb mods . . . . vary similar to those listed at the top of the page . . . . . ran great with the stock can with the V&H, it acts very soft below about 3 grand . . . . . I tried adjusting the idle mixture a bit, and that seems to help . . .. anyone with a similar setup have any suggestions? Also, is there a tool I can use to adjust the idle mixture without either charboiling my hands, or waiting until the whole thing cools off, turning the screew a 1/4 turn, running it til it's warmed up again and testing, and then repeating? thanks | ||
| Jmartz |
Robert: I have experienced the same engine behavior on my S1 when I changed the carb to a CV44. Idles well and runs well durng transition and at full throttle, sucks whiles cruising at 3 - 4 K rpm. I suspect the "surges" or momentary quits are the same as a carb fahrt except the engine is going so fast that it doesn't really come out as one and you feel it as a slight hesitation. This is a typical lean condition that I have corrected or improved in two ways. Sometimes it responds to enlarging the slow jet but if you are already running a 45 you may lift the needle in .020 incremnets. This will allow the mid range to run richer and hopefully correct the problem. Bear in mind that this remedy is contraindicated if you have an intake leak that might be causing the problem. Sometimes intake leaks cause muffler pops on deceleration. | ||
| Hans |
Yeah Robert, as Jose said, an intake leak can be the culprit. That matches well your problems. At changing throttle the acceleration pump masks the lean condition. Was the blueish heat discolorization on the headers extending in the direction of the muffler? | ||
| Robertf |
Hans: I verified there is no intake leak by spraying WD-40 at the manifold joints while engine idled. Idle speed and sound did not change. I just returned from Santa Cruz Buell with the N65C needle and a #45 slow jet, time to perform the usual carb mods. Robert | ||
| Robertf |
... well, that didn't make any significant difference. I did all the mods at the top of the page, except I didn't change the main jet. No more tinkering till at least next week, tomorrow I ride up to Donner for Old Highway 40 Motorcycle Days. RF | ||
| Jmartz |
Robertf: The main jet should not affect the midrange, that is, when fuel is flowing through the emusion tube during times when the needle is all the way down (or nerarly so). If mid range bucks persist lift the needle with a thin washer. Try .010 or .020 I think it might get better. Jose | ||
| Greg |
i recentnly purchased a 01 s3 im having problems with the idle when the engine gets up to operating temperature it wants to idle at about 1500rpm the changes i have made are a vance and hines a buell race air cleaner and race ecm can anyone help me out and tell what is going on the bike was on the scanalyzer and set back to zero please email with some info | ||
| Orion |
Just put a Forcewinder and a V&H pipe on my '00 M2. A sales guy at the local Harley shot told me I shouldn't run it until I get it re-jetted becuase it's probably running lean. They can't do it until Aug 21st. There's no way I'm staying off of it that long. Here's the deal: I don't think it's running lean, if anything it feels rich (boggy and less throttle response). Another guy at the shop said don't worry about it unless the headers start turning bright blue. I don't have enough miles on it yet to check the plugs, I'll do that afer 100 more miles or so. Does anyone think I'm going to hurt my engine by running it this way? J.D. | ||
| Newfie_Buell |
I would worry if under acceleration it sounded as if someone had a tin can of marbles under the tank and was shaking the hell out of them. Sure sign of running lean. Other than that run it fast in 4th gear, shut it down and immediately check the plugs. | ||
| Orion |
Some kids in a car tried to beat me to the merge lane tonight. For an instant I forgot I was trying not to run it hard. I opened it up and it didn't ping a bit. Actually it sounded really freaking mean. Along with smoking them I probably scared the crap out of em too. I love it.  | ||
| Swede |
Robert, you have a larger carb than stock which gives you a slower air/fuel speed through the carb. Going up in jets may or may not be the solution, but keep in mind that a smaller jet might actually give you a richer mix. | ||
| Robertf |
swede, My bike has the stock CV40. Also, the problem hasn't always been there - it appeared after about 9000 miles. I'm starting to think it's a fuel delivery problem. I've checked the tank vent, and the fuel valve, vent is good, plenty of fuel gets through the fuel valve. Next I'll check the float valve and the float bowl vent. Robert | ||
| Hans |
Robert, you are back again. Gave your problem a thought and maybe it is not fuel related but electrical. Ever had a dying high tension coil with strange problems. When the RPM`s went up the alternator kicked in and gave just that little bit more voltage to give regular sparks. Worth trying to check or clean the earth and battery contacts. Hans. | ||
| Iggy |
forcewinder question. i guess this is the best topic to place the question under. just got back from the dealer and my mechanic seemed to think that my forcewinder needed further mounting support. i have it set up with the carb, then the gasket that comes with the kit, and finally the elbow. the elbow is held in place with the three allen bolts. is this the correct assemblage or am i mistaken. thanx iggy also see my clutch post | ||
| Loki |
Iggy, Did you remove the original carb mount? The piece that the breather bolts went thru? If you did You need to put it back on the bike. It is what holds the carb in place, which will also support the "Force Winder". If you didn't remove it when installing it, it is installed correctly. You will still see some shakes and wiggles from the filter.... Loki | ||
| Chuck |
All, I don't usually bitch . . . but today I got my new Forcewinder; and 2 of the mounting holes had been "hogged out". I understand that this may have been necessary; but the job they did on mine is a real cluge --- apparently done after the chrome plating and with much haste and no skill or thoughts of "craftsmanship" --- the holes look as if they were made with a small rock and a big hammer . . . I know . . . I know, they will probably not show --- but the kit was not exactly free --- WTF  | ||
| Buelliedan |
Iggy, You need to put the bracket that goes from the breathers to the carb back on immediately!! Your mechanic is 100% correct. Thank him!! He probably saved you from a very expensive mistake!! Dan | ||
| Iggy |
thanx guys the carb mount is sitting in the garage and will return to the bike today. i wondered how the intake manifold seal ring was enough support for the carb. danke iggy | ||
| Sem1 |
Chuck, I had the same problem with my Forcewinder. The mounting holes were really ugly. In fact, one of them had a "lip" from drilling that I had to file down -- there was no way it would otherwise have sealed with the carb. Good luck with yours. Cheers, Semi | ||
| Sejose |
I'm not yet a Buell owner, though I'm saving for an X1. My buddy was at the local dealer a while back and was discussing the X1 and hopping it up....pipe, cam etc and was told by the dealer that the fuel injection was 'self mapping' Is this true? This doesn't sound right to me, but then I'm not really in the position to know. Thanks! Scott | ||
| Cyclonem2drew |
I think what the dealer was saying is that the fuel injection system makes adjustments to air and fuel mixture as conditions dictate (i.e. air temperature, fuel grade, etc.), but all modern F.I. systems do this. As far as "self mapping," I'm not so sure this is true. That, to me, implies a more complicated engine management system, such as one used in a premium automobile. For example, BMW management systems remember patterns of drivers...even different drivers that have driven the car...and can automatically readjust things like the shift points, based on what the computer thinks you are driving like. The X1 doesn't do anything like this. | ||
| Chuck |
well, the Forcewinder is finally on the bike. I hope it works better than it looks. Unless I can tune this thing to make a noticeable difference, I will be disappointed. The quality of this piece IMHO should have been much better, considering what it cost......... | ||
| Skeptic |
Not a great day. I moved the needle up in my carb today, and broke the choke cable ferrule (plastic piece near the choke pull) by overtightening the nut at the mounting bracket. Any temporary "miracle cures" for this until I get a replacement cable? Or a stronger replacement? I've done this a few times without incident, but the plastic seems to have gotten brittle (maybe from being soaked with hot oil from the leaking rocker box gaskets). Also, the carb has an S1 thunderslide kit, but I'm using it on a 2000 M2. I bought the carb used and don't have any spare jets. Are the (main) jets for the thunderslide available separately? I need a smaller main jet I think. Skeptic |
