Why is my bike leaking oil and from where

SOURCE: oil leak

and with the V50 I thought I'd achieved my ambition. It was oiltight to begin with but not long after I'd done a bit of maintenance (oil and air filter change) I started noticing drips underneath - coming from the pipe that dangles from the air filter unit (yes it still has the original [expletive-deleted] item). For a while I ignored it as there were so many other jobs needing to be sorted, but it has just got worse. After a long trip, parking it is embarrassing - especially as everyone knows that Guzzis are oiltight . . . Now it seems to me that the oil could have come from one of three places - the crankcase, or either of the rocker boxes, as all of their breather pipes go to the underside of the air filter chamber. I therefore detached the existing pipes to the rockerboxes, stopped up their ends, and ran new breather pipes from the rockerboxes to vent under the bike. I reckoned that, with three pipes dangling underneath (Sherlock Holmes' three-pipe problem?), I should be able to see which part of the machine was responsible. With me so far? Did a 21-mile trip this morning, put it back up on its stand and waited. Result - oil drips from all three pipes! Thinks: when bought, the oil level was only just above minimum on the dipstick. When I changed the oil, I filled it to the max level - and someone has suggested that this is the cause of the problem. I therefore drained some oil out, and it's now at the half-way mark though without any effect on the oil drips. I'm reluctant to drain more, though that might be the next step. If it does effect a cure, would that point to some other, underlying problem? Any ideas or suggestions welcome, as at the moment this machine is not living up to the Guzzi reputation.,The breather system on the V50 works in a peculiar way. The two pipes from the rocker covers are the main engine breathers. They go into a chamber in the air filter housing, and the tube from there to the crankcase is actually a return pipe, to get the oil recovered from the breather back into the sump. On mine, I am sure the breather then goes into the air box behind the carbs, and I didn't think I had another pipe dangling down. Certainly too much oil in the sump can cause problems in most Guzzis.,,,

SOURCE: I have a 2000 1200 custom sportster. It leaks oil

if the oil tank is above the crank case, inspect the oil pump check valve. go online and study the check valve's functional purpose and see to it that the vale is operating properly. it should not be an expensive fix.
if you reroute hose be carefull of rear tire annnd what does the oil level in the oil tank sit at when full and after the leak happens after -say a day of riding- a week  

Paul G

• 161 Answers
• Posted on May 18, 2009

SOURCE: oil leak from the front of the motor

Its funny you should mention this but yes, I had its bigger brother the GS 850 G , same problem, Apparently, in my situation I did the same thing and went to the shop and let those butchers make it worse !!!, the way i found my leak was by washing the motor with a grease and oil cleaner , strayed the whole motor and wash it all off totally, then I turn her on and let her get to operating temp went for a few mile and came back and checked it, for me it was the head gasket   the guys put on and i forced them to do it again,  I found out later that it was common with the suzi's of that model and ended up doing it myself, I used the original gasket and used a compound called gasket goo and it never leaked through out the 8 years i had it . But before you do anything , surly they gave you warrant y on the work so take it back and demand they do it properly.
Cheers and ride safe

SOURCE: Oil/Water mixing and leaking

you need to rebuild your engine sounds like you have a gasket leaking or you warped your primary

SOURCE: leaKING OIL SUMP PLUG

buy a tap and die set and re tape the threads on the bolt or if too the threads are really messed up buy a new plug bud also check to see if there is a seal on the plug e.g. o ring/washer