Question about 1981 Moto Guzzi V 50 II
Probably far too late to be useful, but here goes:
I had exactly the same problem on a V50II, and like the above it started after changing the air filter, but I didn't think that could be the cause. After changing the air filter again, a few years later, the oil drips stopped. I conclude that when I did the job (a rotten job it is, too) the first time I must have got something out of alignment.
Thinks: when changing the air filter, if you don't have this problem be sure to use correcting fluid (or similar) to mark the parts before dismantling. If you do have the oil-drip problem, be very careful and look closely at what you're doing and you may well find something that doesn't look quite right and may well be the cause of the drips.
Posted on Sep 12, 2014
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.,,,
Posted on Nov 10, 2008
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Posted on Jan 02, 2017
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