| Author | Message | ||
     Arl125 |
Hello all, I just purchased a 2000 Buell m2 and after about a 20 minute ride it started spitting oil out of the clutch lever. I don't know what the problem could be? I check the dipstick and it was right in the middle of low and high. Thanks ~Austin | ||
| Buell_bert |
It could be your vent tube is crimped or plugged and pressurizing the primary and pushing it up the cable? I just hope your crank seal is not failing. Your oil tank is not attached to your primary directly. (This is your primary vent tube to clarify this) (Message edited by Buell_Bert on November 25, 2014) | ||
| Arl125 |
Where is the vent tube if you don't mind me asking? | ||
| Reepicheep |
What Bert said. Is it coming out the tube over the rear tire also? Then it's probably the crank seal, and maybe also the pinched line. A bit of dismantling, and a couple special tools and a big socket, but not an expensive or difficult job. | ||
| Buellistic |
The "BEST" advise anyone on BWBers can give you is to buy the FACTORY SERVICE MANUAL and "PARTS BOOK" for your YEAR/MODEL BUELL ... For "SAFETY", the transmission breather hose should be ran to a catch container because you do not want oil on your rear tire !!! | ||
| Arl125 |
Thanks for everyone's advice! | ||
| Arl125 |
I ran the trans vent tube to a homemade catch can and that seemed to fix the problem. | ||
| Bluzm2 |
Austin, You didn't fix the problem, you masked it. There is an underlying issue that caused the over pressure in the primary. A plugged vent and and or a bad primary seal will cause this. If the stock seal has never been replaced, I can almost guarantee you primary seal needs replacing. The old single lip seals were famous for leaking. The new 2 lip style are much better. If you see your oil level (engine oil) going down and your primary level going up, the primary seal IS the culprit. It's not hard to change and lets you get a new style primary gasket in place too. Also a perfect opportunity to check your primary chain tensioner and replace it if it's the original breakage prone version. You may want to move this conversation to the old school section. Great advice available there from us "old school" Old Schoolers. Brad Brad | ||
| Arl125 |
Thanks Brad, I will be checking that out tomorrow! | ||
| Buell_bert |
It could be when he ran it to a can or what ever it took the kink out and fixed it. It does not take a 3/8 hose to vent that area. It only takes a couple pounds or so of pressure to push anything the 2 feet up to the clutch lever. That is of course how far above sea level you are at the moment. I would not just start digging the seal out unless I was sure. I once had one of mine push a bunch of oil out of the engine into the primary and never did find out what caused it and the seal is still there. | ||
| Screamer |
If the vent line is routed incorrectly and has a "dip" in the routing, it can function like a p-trap. Oil residue can collect in the dip until it completely blocks off the venting function of the line. The pressure can build until it blows the collected oil out (usually all over the rear of the bike). Pretty well known issue - there was an XL service bulletin on it. Crank seal function may also impact oil carryover. To check the crank seal, we found that a high quality combination vacuum/pressure gauge on an unobstructed vent line would work. There's often pressure due to heat expansion - foaming etc., but there shouldn't be vacuum. If the seal gets replaced its important that it be installed in the right direction, and that the surface of the spacer the seal rides on is in good condition (no grooves, no excessive polish/wear). | ||
| Zmannm2 |
Sorry to get in this thread so late. But have an 01 M2 had oil on my back tire after riding 20 mins. Was told it was primary over fill. Well HD shop and 2 other speciality shops couldnt find/fix it. Found a mechanic who could. He found a HD Service Bulletin" that stated 99-03 Sportsters had bad oil pump gaskets. Replaced both, Not a drop!!!! |
