| Author | Message | ||
     Bojanglas43 |
Good evening! This is my first time post but I'm in need of some help pretty bad. Any help is greatly appreciated. I've got an 01' buell blast. The bike has about 30,000 miles on it and has been taken care of its entire life. The problem I'm having is I can't seem to get my top speed over 62 mph and it takes a minute to get there. It's had an oil change and only a month ago it had a new "boot" installed (the boot that leads to the carb.) It hasn't got any better since the recent work. It actually runs and sounds good but just wont go over 62mph. The Primary seems fine,also the carb was cleaned as well. I'm taking a long trip soon and I need to get this running better. Please help and thanks so much. --Steven-- | ||
| Frznfury |
Check your carb diaphragm. If it's torn or misaligned, or if the top of your carb isn't on tight, you'll feel painfully slow acceleration, like a cage, maybe a sucking sound, and a low top speed. | ||
| Bojanglas43 |
I'll check that out. is there anything else I should check while I'm down there? Thanks! | ||
| Ezblast |
Primary too tight - adjust by sound. EZ | ||
| Zroknwn |
Hello Everyone, I am new to the cycle game and decided to purchase a 2000 Blast. The bike is having almost the same issues that the OP had. My bike has about 4100 miles on it and I can't get it to get past the 60-65 mph mark unless I'm cruising down a big hill. The absolute fastest it will get is about 68-70, at that speed I will be in 4th gear and there is no change between 1/4 throttle or WOT. I have issues with the bike once I get to about 50 and only if I am at about 1/2 throttle will it do any type of acceleration. It idles just fine and from 1st to 3rd I have good acceleration, but anything past 45 mph it slacks off. Once again this is my first bike and have no idea about what to look towards first, I have mechanics knowledge with cars but never worked on a bike. The previous owner just recently replaced the voltage regulator, filter, plug, and battery. If someone is able to help me out with the issues I am having that would be awesome. Thanks in advance. I know I'm cross posting, but just trying to get exposure where my issue is doubled up with someone elses. | ||
| Gearheaderiko |
Gearheaderiko Posted on Monday, March 07, 2016 - 05:17 pm: DO NOT TAKE THE CARB APART!!! Is the bike stock? Any modifications? Got a repair manual? The title to this thread suggests that the primary chain is too tight-which could very well be your problem. | ||
| Zroknwn |
I haven't done anything as of yet, figured i would ask around here before just diving into it. The bike is completely stock, no upgraded exhaust. All mods that have been done to the bike were what I stated in the previous post. No repair manual as of yet, might need to invest in one to help out with getting to the bottom of the issue. I currently have a bottle of SeaFoam in the tank and have rode it about 65 miles since adding it. | ||
| Kwkride |
An entire can of Seafoam?? That can treat 16 gallons of gas. | ||
| Gearheaderiko |
Get a repair manual. It takes too much time trying to spell out procedures here that are already in the manual, although many procedures are here in the Thumper section of Badweb. Learn to use the search feature, there is a lot of info here. The first thing you have to check is the primary chain adjustment. The manual says the adjustment is 4 1/2 "flats" out and this is too tight. It has caused many problems and too tight a chain on a relatively new bike like yours is very common. To tight a chain will cause high speed to be limited. It should be 12-18 flats out. Do not take the carb apart, please. As the other poster implied, have you diluted the gas with too much seafoam that now it won't run right? 1) repair manual 2) primary chain tension. (INCH LBS, NOT FOOT LBS-you'll see!!) Start there. There are other things to check, but since your Blast is "like new", there isn't much that could be wrong with it. | ||
| Gearheaderiko |
It will need a slight re-jet, if not already done, as the 2000's came very lean. But let's find your problem FIRST! You'll need to make sure the rear sprocket recall has been done. It should have 80 teeth. 73 teeth and that's bad. Those are the only 2 sizes. It's not a California Blast is it? | ||
| Gearheaderiko |
Also, the fact that the PO replaced a bunch of stuff is not a good sign for a bike with only 4000 miles. Sounds like he was trying to fix a problem by replacing things. You will have to check the plug gap as that can cause serious issues. USE a torque wrench and anti-seize. Aluminum heads strip easy!! How is the oil level when hot? Have you changed or added oil? If so, what type and how much? Got a picture? | ||
| Zroknwn |
I put the SeaFoam in with about 2 gallons of fuel and have since put another gallon into it, I know the bottle can treat up to 16 gallons figured I'd run it saturated and try to clean out any carbon that might be built up in the carb, plug and piston. The sprocket looks like the 80 tooth from everything I have seen there is a noticeable visual difference on the 2. To my knowledge it is not a California Blast. I bought it from someone in Memphis TN, I'll look to get a manual as soon as possible. In the meantime would it hurt to ride it as of right now or should I park it and wait till I have the manual? | ||
| Zroknwn |
Haven't checked oil level while hot, haven't changed or added oil either. Just got it brought it home rode it around a little bit then brought it to work about a week later and when getting on the interstate is when I found out about the issue.  | ||
| Zroknwn |
Sorry for the big picture, only one i have on my phone at the time. | ||
| Gearheaderiko |
Definitely not stock, which indicates to me we might be trying to find a problem that the PO caused. Does it start easily? Under the left side of the engine, about midway, you'll see a large bolt with a locknut on it. A picture of this would be most helpful. A picture showing the underneath of the carb would also be helpful. Yes, depending on what the problem is, you could do considerable damage riding this way. | ||
| Gearheaderiko |
It looks like the 80 tooth sprocket. | ||
| Gearheaderiko |
It does have a Pirelli front tire :-) | ||
| Zroknwn |
Starts really easily, other than the clutch connection being intermittent. What I mean by that is that I have stalled it out and been unable to start it back up without unplugging the connector and reconnecting it. I'll have to wait till after work to get a picture of the carb and under the engine. I'll post it as soon as I can. Looks like she will be sitting till we figure out the issue. Thank you so much Gear  | ||
| Gearheaderiko |
Repair manuals: http://buellmods.com | ||
| Zroknwn |
Are all of the blast manual's the same or should I be looking for a 2000 specifically? I didn't find a 2000 on the link is why I ask. | ||
| Zroknwn |
I was able to take a some pictures of what you wanted to look at. Here they are    | ||
| Zroknwn |
I've got an inch/pounds torque wrench that I will tighten up the jam nut tonight and see if that will adjust the chain the way that it should be. Fingers crossed | ||
| Zroknwn |
Anyone know off hand what size the limiting screw is? Got an 18 MM which is too small and a 22 MM which is too big. I'm guessing it is a 19 or a 20 or is the screw standard instead of metric?? | ||
| Kenny_gilgore |
Zroknwn, You need a 3/4" and a 7/8" wrench. This part of the Blast has American SAE threads Kenny G | ||
| Ezblast |
Tightening it up will slow down and diminish it's top speed. Please adjust by reverse sound method. Loosen till you hear sound, then retighten till sound disappears. If over 25 flats out and no sound, then just leave it at that and your good. EZ | ||
| Gearheaderiko |
As being new to the Blast, it's much more comforting to do it by the repair manual method first (12-18 flats instead of 4 1/2) and then do it by ear. That will give you an idea of what's close (a base adjustment, if you will). It's not easy for most Blast newbies to know exactly what they are listening for and having the repair manual way is a good back up. I need a picture from a little more under the carb to see if your idle mixture screw is uncapped. Looking at your primary adjustment screw, your chain is fine or even too loose (which can cause lowered top speed, but not to 60 mph!) typically, there is about 3/8" between the nut and bolt head when adjusted properly. Lastly: you have issues. There is a huge amount of black "goop" on the intake boot. I don't know if it's there to fix a problem or attempt to fix a problem. Regardless, you need a new intake boot. I'm sure that one is too messed up to use. Before you do anything else replace that boot. Seriously. To proceed is pointless. | ||
| Gearheaderiko |
PS your Blast looks like it has a lot more than 4100 miles  Or it just might be a victim over fixing. | ||
| Zroknwn |
Thank you everyone, looks like I'm going to be tearing the bike down to take a further look into it. Gearhead and EZ- I noticed the black goop on it when I was taking the pictures and I feel that he was having issues with sealing and instead of getting a new boot they just tried to use black RTV to seal it back up. Better to go by the HD dealership to get a new boot or just get it online and wait for shipping? Is there any way to get the spacer that went in between the Jam Nut and Limiting Screw from the factory setting to have a baseline to go from? I will look into getting a new boot. I did have a question about the Limiting screw, when I adjust the limiting screw I should feel tension as I torque it down to 24 inch/lbs correct? Should I need to back off the Jam Nut until I feel tension down to 24 inch/lbs? As of right now i don't really get any tension on the limiting screw when adjusting it by sound. I was reading and most say that my shoe would be the cause of having no tension on the Limiting Screw. I will take my time i putt it apart little by little, I am as of right now waiting to hear back about getting a bonded title for the bike due to the seller never titling the bike previously. Gearhead - Do you suspect that the bike has had the Speedo replaced and showing mileage that is incorrect for the motor? | ||
| Gearheaderiko |
See if the dealer has the boot in stock, if not, order it online. You don't need the spacer to get a baseline. The spacer is about 1/2" thick, I could go measure one, but it's not that important. . On average the proper adjustment is about 3/8" of threads showing between the nut and bolt head. The baseline you need comes from using the torque wrench and following the procedure in the repair manual. IMPORTANT: is your torque wrench measuring 24 INCH POUNDS not foot pounds? It's not a lot of torque. Very minimal, next to nothing. If you turn the bolt in by hand you should feel it come to a stop. If it doesn't, you have problems. You wouldn't be the first person to use the wrong torque wrench. YOU WILL do damage if you force the bolt in. | ||
| Gearheaderiko |
Someone could have replaced the speedo, but I doubt they did it fraudulently, unless you spent a lot of money on this bike. Or they could have just fouled up a perfectly good motorcycle. 4100 miles is barely broken in and should need nothing. |
