| Author | Message | ||
     Telecolin |
I have been a long time watcher and this site has been a wealth of information but I have a problem I seem to have no solution for so This is my first time posting. I have a 2006 xb12x ulysses that has had a small but persistant oil leak that I cannot seem to fix. The oil seems to be coming from the seal between the oil pump and the bottom of the crankcase on the transmission side. I have tried replacing the gasket, removing the gasket and using RTV ultrablack, tightening the bolts past the torque in the user manual and nothing seems to work. It only seems to happen after it has reached operating temperature and when i spend a significant amount of time at or above 4000 RPM. any help would be great! it is really annoying to have oil all over the exhaust! (Message edited by telecolin on November 30, 2012) | ||
| Panhead_dan |
Are you sure that's the source? I would be looking hard at the oil lines. (Message edited by panhead_dan on November 30, 2012) | ||
| Kenm123t |
Using Synthetic oil ? it leaks out of hose crimps easier than Dino blends Smaller molecules | ||
| Telecolin |
I thought it was the oil lines at first so I took off the exhaust and looked at all the connections very carefully. when I got down under the bike I could see where the oil was seeping from the oil pump where it mates with the engine block closest to transmission case. But, just to be safe I removed, cleaned and reassembled the lines with teflon. the problem is still occurring from the same place. | ||
| Telecolin |
and yes I am using mobil 1 20W-50 synthetic (Message edited by telecolin on December 01, 2012) | ||
| Hughlysses |
That's a weird one. Have you carefully checked the mating surfaces for nicks/scratches/level? I suppose it could be porosity in the engine cases. I guess the other possibility is the leak is actually coming from someplace else and running down to that point. I'd try cleaning the bottom of the engine thoroughly (like with brake cleaner) and then spraying the area around the oil pump with spray foot powder. That'll make the leak show up much quicker and more distinctly. That might help you diagnose it. | ||
| Telecolin |
Hugh: When I removed the pump I could see the oil trail from the bottom of the block where the pump at. I checked the mating surfaces, and the one on the block is pristine but the one on the pump had a few nicks and scratches. I figured that a little RTV would take care of that but maybe it warrants another look. is there anything I could do to remedy that besides a new pump? it doesn't leak during normal commuting it only seems to happen when the engine is hot and run above 4000 RPM | ||
| Hughlysses |
Yea, it seems like RTV would have fixed that. Another thing to check would be to make sure the breather system on the valve covers is OK. If something's blocked up, it could build pressure in the crankcase and that could wind up forcing oil out there. If the pump face is scratched, I guess you could have a machine shop take a small cut off the pump face. Otherwise, you could replace it with a new pump. IIRC, they're about $175. The 07 pump is slightly improved; it has a larger capacity scavenging section, which helps prevent oil from accumulating in the crankcase (which might help your problem as well). | ||
| Telecolin |
I'll check the breather system. I recently rerouted the hoses to a new catchcan, so I'll make sure nothing is getting pinched off. | ||
| Teeps |
Clean the engine with brake cleaner or other similar aerosol cleaner. (engine needs to be clean and dry) Then spray the suspect area with leak check powder. (spray on foot powder can also be used) Then ride the bike until it leaks. Post a photo of the leak area. | ||
| Uly_man |
"tightening the bolts past the torque in the user manual". Err, you do NOT want to be doing THAT, Dude. The torque settings are set FOR A REASON and "over doing" them can cause many problems. You may have already done some damage. |
