| Author | Message | ||
     Bigdog_tim |
I just bought a basket case 2000 M2. In changing the fluids, I discovered about a half gallon of gasoline in the PRIMARY! I THINK what happened was prior owner left the bike in the garage with the petcock open and kids (or someone) did the "vroom-vroom" flooding the carb all the time. Another thought is the vacumm seal maybe leaking. Anyone else have a thought on how this could have happened? Anyone experience this before? I plan to change all the gaskets/seals in the primary and to flush a bunch of oil through there. For the "flush oil" any suggestions on brand? I expect I will do oil changes every 50-100 miles for 3-4 flushes to get all the contaminents out. | ||
| Whodom |
Wow, that's a good one. Maybe someone left the petcock open, the float stuck and gas ran into cylinders and down into the crankcase. If this is what happened, you'd better make sure the crankcase is thoroughly drained too. IIRC, there's a plug on the bottom of the crankcase that can be removed to drain it dry (not necessary for normal oil changes). BUT it seems like you'd also have to have a really bad crank seal too for this to work. The only other thing I can think of is that some moron cross-connected the gas line and the transmission vent and therefore directly drained all the gas into the transmission. Personally, once I had the source of the gas fixed I wouldn't worry a lot about the gasoline contamination. I'd drain everything thoroughly, fill with fresh transmission lube (your choice; I'm pretty impressed with Formula+ after one change), ride for ~100 miles and change again. Once the transmission gets good and hot, all traces of gasoline will quickly evaporate and be gone out the vent tube. IMHO one extra fluid change before going back to the regular interval should be plenty. Good luck! | ||
| Sloppy |
Gas went through the carb, piston rings and then into your bottom end and leaked through the crank seal into the primary. Besides what you've listed you'll need to replace the primary crank seal. Before you spin the engine over you should pull the spark plugs and put a little engine oil in the bore to lubricate the rings. You might want to make sure the that the engine wasn't turned over while gas was in the cylinder -- if it was you may have to replace the rods. | ||
| Grndskpr |
After last years crash on the dragon, i parked the bike The priamry filled with gas oil over the winter, and when i started it in the spring, oil gas pucked out the trans vent Changed all the fluids, hit the carb with a hammer Rode it, did a track day, and never pulled anything There is a slight leak at the primary, and i will change the gasket, but do the cheep stuff first Bike still runs fine, and if it hadn't rained it would have more than a few laps on it Do the cheep free stuff first R | ||
| Bigdog_tim |
Ok - update. I have verified that the vents are not cross connected. I have also verified that the vacuum is fine. I put some fresh oil/tranny fluid (along with filters). More to try to debug the problem - have not chased down the gas into engine problem. If I try to wheelie (quickly shut throttle then roll on about 1/2 to 3/4) engine stutters. If I try to go faster than 60 - same thing - sort of a chug-chug before things happen. Next on my list of things to do is to check the float bowl - but looking for other ideas. Thanks, | ||
| Blake |
Float bowl float or needle valve for sure is the likely culprit. Super easy fix.  | ||
| Firemanjim |
2 things come to mind--may be pinging/detonation or,may be bogging and misfiring from a too rich condition. Check your plugs to see how the bike is running(you do have the updated 10R plugs,not the hotter 6R's)are they whitish from too lean or black and sooty from too rich. Either could cause your chugging noise.After that look for things that fail under a load,plugs,plug wires,coil--- Start simple. | ||
| Bigdog_tim |
Ok - here is the update. I pulled the carb and found the float bowl to be out by a couple of MM. I adjusted that. Figured I already had the carb pulled so decided to go with the jet kit. Bike had 200/42 - I went with 165/45 (the Stage 1 jetting). I ordered the K&N high flow filter (dealer did not have them in stock). Got everything put back together and WOW! The "chug" is GONE! Tons of throttle response. I did a bounce wheelie in second gear! I was impressed. I have fresh plugs to put in (think they should be changed anyway since oil was foiled with gas). I think my gas in oil problem was a combination of things - think the previous owner never thought to shut the petcock. I also think he parked bike outside part of the time and/or his garage was very hot. That and the float bowl never closing seems to make an argument for fuel getting in the engine. Looking for exhaust recommendations now. I don't want a "loud" bike. I also have an XB12R (bone stock). Looking for performance but not extra noise. Thoughts? | ||
| Eengler2 |
Is the 165 main a little small? | ||
| Bluzm2 |
A 165 is way small. It should be a 185 or 190. You stand a good chance of baking your motor with the 165. |
