So I bought an 80K 1150GS the other week as a summer scratcher so I could go out on rides accompanying my lad. Bike has been ok but after a run out last week, when stopped and after being on its side stand for abut an hour it did the usual oilhead thing after sitting and blew a load of blue smoke on startup.My lad was worried but I just gave it the old "yeah don't worry, they all do that". We all rode home about an hour's distance without further issue and I never thought any more about it. Bike ran fine.
After a couple more uneventful short trips, the day before yesterday I went for a short ride, stopped for a bit, no dramas, drove another 5 miles to fill up with fuel and on startup after refilling, I got loads of blue smoke which didn't go away, accompanied by very lumpy running, stalling at junctions (unless I kept the revs up) and a general lack of smooth power for the 10miles it took to ride home. I was due to ride a 30 mile trip that evening but it put the mockers on that.
The previous owner had swapped out the LH Head (this is the actual bike) as someone had drilled through to the oilway on "repairing" a manifold stud on the previous head and to be fair, he looks to have done a half decent job.
I've since pulled the L/H head off as this was puffing blue smoke from what looked like the exhaust manifold when revved.
The refurbished head, valves and valve seals all look good (replaced by previous owner) but the plug was oiled up like no tomorrow.
If I'm still getting oil in the combustion chamber I'm leaning toward rings being the issue given that the old thing has 80K on the clock. It been a while since I owned an oilhead so deferring to those with much more experience than me.
Before I pull the cylinder does this sound like knackered piston rings?
After a couple more uneventful short trips, the day before yesterday I went for a short ride, stopped for a bit, no dramas, drove another 5 miles to fill up with fuel and on startup after refilling, I got loads of blue smoke which didn't go away, accompanied by very lumpy running, stalling at junctions (unless I kept the revs up) and a general lack of smooth power for the 10miles it took to ride home. I was due to ride a 30 mile trip that evening but it put the mockers on that.
The previous owner had swapped out the LH Head (this is the actual bike) as someone had drilled through to the oilway on "repairing" a manifold stud on the previous head and to be fair, he looks to have done a half decent job.
I've since pulled the L/H head off as this was puffing blue smoke from what looked like the exhaust manifold when revved.
The refurbished head, valves and valve seals all look good (replaced by previous owner) but the plug was oiled up like no tomorrow.
If I'm still getting oil in the combustion chamber I'm leaning toward rings being the issue given that the old thing has 80K on the clock. It been a while since I owned an oilhead so deferring to those with much more experience than me.
Before I pull the cylinder does this sound like knackered piston rings?
