| Author | Message | ||
     00cyclone |
Well ive been having some bike problems for a while and still have not been able to isolate it. Itll run fine for like a week then all the sudden itll die when im out riding. It doesnt completely cut off, it runs like its starving for gas and ive already put on a new fuel line (with an inline filter). If i realy mash on the throttle while this is happening itll keep going but just run horribly rough and as soon as i pull the clutch it just dies. I thought it might be the spark plugs so i went and bought some today. My plan was to ride it until it died like it did yesterday, and to bring the new plugs and a wrench with me, switch them and see if it would start right back up after that and then i would know it had been the plugs. But this did not work so I got some good exercise pushing the beast home. Any ideas? All i can think of is a loose ignition wire or something or a carb problem. It just seems weird that a mechanical device like a carb would be capable of intermittent problems. It seems like it would either work or not work. But yeah any ideas please post im not sure what else to try! | ||
| Littlebuggles |
Prolly want to start with the easy stuff first and see where it takes you, check your jets and see if they are partially plugged, if you combine that with a tank of questionable fuel it might lead to intermittent fueling? I'm not a pro, but that's where I'd start first. -Mike | ||
| Buellistic |
Have you tried to open the gas cap when this happens ??? If it goes "WOOOOSH", then it is the gas tank vent valve ... If that is it, just cut the bottom off the valve as "i" do, end of problem ... | ||
| 00cyclone |
ill give that a try | ||
| 00cyclone |
Ok so get this. I started it up today with the choke and everything and it did the same thing. Ran for a little while revved to about 2000 on its own (normally idles at 1500 with choke) then promptly died. I pulled the gas cap and it did suck any air in. I tried messing with the spark plug wires thinking it was an ignition related thing. Tried to start it again...nothing. Then i switched the petcock from on to reserve (even though it was basically a full tank) and it started perfect and i rode it for about a half hour with no problems. Very weird. Anyways, do any of you know how the internals of the tank work? Like how the reserve and regular tank are partitioned? Im trying to decide if i think its something in the tank or a faulty petcock. Feedback appreciated. Thanks | ||
| Oldskoolef |
The tank is not partitioned. The petcock has two pickup tubes. The on position tube is taller than the reserve position tube. You may have some trash in the tank or petcock. But I doubt it. It can be disassembled pretty easily. The petcock is only held together by 2 screws. You will have to drain the tank first before taking it apart. I bet there is some trash in the carb float bowl causing this problem. | ||
| 00cyclone |
Yeah I was thinking the float bowl as well. But since the float bowl is so small it seems like the problem would happen much more often. Like ive ridden for a week with no problems at all. Well im going to check the petcock first and ill let you know how that goes. Thanks for the help | ||
| Cyclonecharlie |
I had the same problem with mine and I pulled the tank and flushed it. Got alot of flaky stuff out of tank. Petcock was almost completely incased with this stuff. That was last year, been running good ever since. | ||
| 00cyclone |
What did you do to flush it? | ||
| Cyclonecharlie |
Nothing scientific, just took the tank off with a quarter tank of gas, shook it up real good and turned it upside down and let it run out(into an old tub) then took the air hose and blew out the rest of the gas. Filled it with water a couple of times repeating the dump till I got tired of messing with it. Dried it out and put it back on(that was a year ago)no more problem yet. I could see the petcock before I dumped the gas(little mag lite)and it was packed with this stuff, not sure what it was and I didn't get it all. About a half pint in a measuring cup. | ||
| Torquemonster |
"not sure what it was " Didnt the inner lining of some tanks have problems with flaking? Maybe that was an earlier model... I had a problem with my M2 acting as if it was out of fuel @ 110-120 miles when I first got it. It'd pop and sputter @ speed (DAMN SCARY at 100mph) and Id have to rev the shit out of it to get it to come back. After the 2nd time it happened, my little mag light showed me what seemed to be gasoline saturated sawdust floating in the tank. (I got the bike from a guy that had it stored in his woodworking shop) The mystery crap almost looked like fine oatmeal. I was too pussified to remove my tank, so I bought a $6.00 siphon pump from the auto parts store, zip tied the suction end of the hose to a pliable metal rod, bent it accordingly, and sucked a TON of junk out of my tank. The bike ran longer after that, but eventually did it again. Fed up with thinking my 5.4 gallon tank was only getting me 120 miles before reserve, I removed the tank and petcock, drained the fuel, flushed it with fresh fuel, and havent had any real problems since. Good luck. (Message edited by TORQUEMONSTER on August 24, 2008) | ||
| 00cyclone |
Hey im draining my gas tank right now because i am pretty sure my petcock is all stopped up but it only drained about a half gallon (probably around 3.5 in there) and stopped. It will only drain if I shake the bike a little and even then its at best a slow trickle. Any ideas? | ||
| Cyclonecharlie |
Your not going to get the stuff out without taking the tank off. It's packed around the screen on the petcock. Taking the tank off is simple,fuel line,bolt in the back and your free. Just rotate the back up to unhook the front. | ||
| 00cyclone |
Yeah ive had to take it off before i was just trying to drain it before i took it off. Anyways its drained and off. Anyone know how long the hose for the "on" setting on the petcock is supposed to be. This seems like it would be sticking up way too far. Also, I disassembled the actual petcock valve and it looks perfectly clean. There is the little plastic tube going up into the tank though. Is it possible to remove this? Just the threads are sticking out and the petcock screws over it. And is it possible to run solely on fumes? | ||
| 00cyclone |
Hey i have my tank off right now totally drained and when i shake it around i can hear something loose inside moving around. Sounds like a marble or something. Is there supposed to be some kind of float or something in there or is this a red flag. I cant seem to get it out but it seems really weird. | ||
| Littlebuggles |
Short answer is there is no float in the M2's tank, since there's no fuel gauge. Loose things in the tank could be anything from the neighbor kids' matchbox car to perhaps part of the relief valve (my first thought). The newer tube style valve has a bearing in it, I think this was a recall item, perhaps the dealership dropped some parts in there when/if that valve was replaced? Don't think that would cause your intermittent fueling problem though. The gasket at the top of the tank can make getting anything out of there difficult. The tube with the threads sticking out of your tank should come out with the petcock, it can be a bit tight though so remove it carefully. It's got a plastic screen in it which might be getting plugged as others mentioned above... The small clear plastic tube is what controls when your reserve needs to be switched on, if you find you hit reserve sooner than you ought to and ride forever on reserve shorten this thing up a bit. Hope this helps. -Mike |
