| Author | Message | ||
     Bsanorton |
02' M2 with 8K on the odo. A couple of weeks ago I take the M2 out for a 40 minute ride to my destination. On the way back she starts breaking up like she's starving for gas or fouling a plug. Have to pull over. Gas is fresh and full, switch to reserve just to make sure. Plugs are good and replaced before the 2nd occurrence. After a few minutes she fires up and runs normal. Yesterday same thing happened, but she didn't die, I was able to ride at lower RPM's and get home (was very close to the entrance of my community when this occurred). When I turn the throttle she just breaks up. This morning I started her up and she fired right up and idled well. Could not take out to test. After the 1st time I chaulked it up to bad gas and maybe poor plugs. Had fresh gas and put in new plugs. The old ones look good with a nice color to them. I am not running a fuel filter and should, but if this was a fuel problem why the sudden off and on characteristics? This feels like when I had to replace the ECM on my X1. Any areas that are more likely then others? | ||
| Harleyelf |
Intake seals? | ||
| Hootowl |
Next time it happens, open the fuel cap. | ||
| Mhlunsford |
Warm engine : when the bike warms the timing changes as well . Could be vacuum to the voes too. I would also spray with WD to the intake seals. A bike that old with low mileage I would suspect a seal of some kind. | ||
| Bsanorton |
Thanks guys. I'll take your advice and do some testing later in the week. | ||
| Xldevil |
Probably missing tank ventilation,already mentioned by Hootowl, or bad POP sensor. | ||
| Reepicheep |
Had a Yamaha Radian that did that exact same thing when the fuel cap vent was plugged. Pop the tank, hear the "woosh", and it was good to go. The Radian also had a small spring loaded ball bearing that was part of the tank vent system that was capable of a VERY high velocity when you take apart the cap to try and fix a plugged fuel vent. DAMHIK.  | ||
| Dannybuell |
it WAS the vent on my 96S1, exactly as you described. I pulled the line off at the tank and got some tubing on the way home. the line at one point had collapsed into a gummy mess. | ||
| Harleyelf |
Could be the float valve in the carburetor is partially obstructed or the level is low. | ||
| Hootowl |
"I am not running a fuel filter" I missed that part. If it isn't the fuel tank vent, try giving the carb a good cleaning. Might have a piece of grit stuck in there somewhere, starving it for fuel. | ||
| Gian4 |
Had the same thing happen to my 97 M2. Checked all timing Voes and seals and all was ok. Rebuilt the carb and still ran like shit. Replaced the carb body and she was back to normal. All I can figure is that the ethanol crap gas glazed the tiny internal passages beyond what carb cleaner and compressed air could clear. Since then I run non ethanol gas as much as possible and stable blue marine when using ethanol tainted fuel. So far so good. Gian 4 | ||
| Bsanorton |
I'll check the vent next time out. I run strictly marine (ethanol) fuel. I've had past problems with my mid jet clogging, but finally put in a brand new one and haven't had that issue for awhile. For some reason the constant cleaning of it never kept it clear. That issue would be immediately be felt as soon as I cracked open the throttle. I will drop the bowl and have a look though. | ||
| Mhlunsford |
Jets are easy and cheap. | ||
| Harleyelf |
Clean a jet with a scratchy tool, leave a rough finish, clogs right back up. New jets are cheap. | ||
| Bsanorton |
It was an interesting day. As it turns out my mid jet was clear. Pulled out the main jet and it was partially blocked by a milkish looking tear drop thing. I wish I had thought to take a picture. It cleaned right off. Also the bowl had a few remnants of what looked like oxidation bits in it. I have only been running ethanol free fuel in it. Now the part that should have been on the funniest home videos. I use rags to make sure the gas does not get all over and the frame is not scratched. I'm usually very meticulous. Put away my tools after putting the bowl and air cleaner assembly on. took a test ride. going good, My right leg (have shorts on) then feels really hot. Look down and see flames, Shyte! I left a gas soaked rag by the exhaust! Quickly pulled in the clutch and turned the ignition off. Rolled to a stop. Jumped off the bike and yank out the burning rag (had gloves on) As the rag flies out it breaks into 2. One part falls to the asphalt, one part falls into very dry grass and almost starts a small brush fire. I ran over and jumped up and down. finally put the grass out. LMAO! I can't believe the bike didn't blow up or I didn't start a forest fire. The only saving grace is that there are only marks on the exhaust. The cases and frame was spared. What an episode! I now need to take longer rides rag free! | ||
| 1313 |
Thanks for the laugh Rich! Oh the times that rags have done the opposite of saving the day... Most of us have similar stories - would make good fodder for a thread on BadWeb, no? Glad you came out as well as you did! 1313 | ||
| Natexlh1000 |
Holy crap! If you were wearing riding pants, you may not have noticed it til it was too late! |
