| Author | Message | ||
     Tazmania720 |
I have a 99X1 and am leaking oil, I think from the primary. Oil has coated the rear rim on the brake side, also causing that not to work properly. I am suspecting the gasket around the primary but not sure. What are the chances the gasket needs replacement, or oil is coming from elsewhere. Thanks | ||
| Tim |
Any oil leaking while riding gets blown around and it is difficult to determine the source. You've really got to clean up the oil and then try and track down the leak. Leaky rocker box gaskets are a likely culprit, especially if you have not made the conversion from paper gaskets to metal gaskets. If you do pull the primary cover, be sure to install the updated primary adjusting shoe. Get the new metal primary cover gasket. There is a small seal in the cover for the shifter shaft as well. I would check the oil level in the primary before you drain it. If your primary is overfilled, there is a chance some lube came out the tranny vent hose. If you are going to attempt any repairs you need to get a service manual. Good luck! | ||
| Blake |
One trick to help locate an oil leak is to thoroughly wash and dry the motorcycle then spray white powdered aerosol foot powder or deodorant on suspect areas, start the bike and inspect closely at regular and frequent intervals until the source of the leak is revealed. | ||
| Road_thing |
If the oil is blowing back on to the rear wheel, it's probably dripping off something higher than the primary cover; I'd bet it's a rocker box gasket. Changing them out (both cylinders)is about 2 hours and under $40 in parts. I just did a pair yesterday on a buddy's bike. Another possibility is the gasket between the starter and the inner primary. I've seen those leak before; the oil usually puddles up on top of the transmission under the starter motor, but it could conceivably blow back to the wheel. It's an easy fix, just two bolts to pull the starter, but you have to pull the primary cover to get at the two bolts. If you're in there anyway you might as well check it out. Blake's suggestion is an excellent one. Not only does it indicate the leak, but it makes your bike smell better! rt | ||
| Reepicheep |
Am I missing something in his description? This sounds like a *classic* blown crank seal? The vent line from the tranny goes right back there, and will (if it gets a really wet burp) spray onto the tire / wheel. If the crank seal is failing, crankcase pressure will get into the tranny and cause these burps. You shoulda seen the 360 degree rolling burnout I did about a block from my house when this happened to me. I kept the bike upright, smiled at the wide eyed neighbor with my best "I meant to do that" look, and *carefully* limped the last block home to my garage. | ||
| Dfishman |
Crankshaft seal.Easy to fix. | ||
| Hootowl |
Check the tranny oil for water contamination too. When it heats up, it tends to blow steamy oil out of the vent tube. This will happen if you direct a high pressure stream of water into the end of the vent hose whilst washing your motorcycle with the seat off and don't realize it until later, when you're 150 miles from home on the side of the road with oil dripping off your rear tire. Does the left side of the oil tank have oil on it too? That's a good sign that it's the tranny vent. | ||
| Tazmania720 |
Just wanted to say thanks to everyone that suggested some ideas on what was wrong with my bike. It turned out to be the primary gasket on the bottom by the bolts for the chin faring. Thanks all. |
