I bought a rather tatty XR650R 4 months ago, road it home and thought I'd give it some lovin' before using it properly.. so I thought, its a simple bike I'll get a manual and do the work myself So new tires, chain, sprockets, lots of cleaning and re-greasing. I've upgraded to larger alloy rads after it spat coolant on me after idling for a minute, new hoses, thermostat, and stripped / cleaned the carb, new jets (175, 2nd clip, 68s).
Finally all back together and gave it an oil change, and there was about 700ml in it! (it holds 1.7l). Anyway new oil filter, fill to brim with oil. That was 3 weeks ago. I have done less than 300 miles since, and have needed to add another litre since to keep a reading on the dipstick!
Its turned into a two stroke!
I've been all over it and can't find an oil leak. Nothing where its parked up. Not in the airbox, or countershaft seal. Today I gave it some gas next to well lit white wall, and the damn thing is smoking, quite badly I guess. Not piles of black smoke, but definately smoking and it smells bad. The plug is also sooty.
This is where I need the advice. Is it the piston rings? dodgy exhaust value? both, or worse?
I think I'm at my mechanical limit with what I've done to the bike already and do not have a garage to work on it, so tearing the engine to pieces might just be too much for me, unless I'm convinced its quite straight forward.
Can anyone recommend a mechanic / garage in London (South preferably) that KNOWS XR650R's or at least Honda Thumpers. I really don't want this thing to turn into a bottom pit.
I appreciate any help as I really want to love this bike, but its turning into a right PITA