lister D blue smoke

hi everyone

I have got a problem with my Lister d it has been running fine for ages until a couple of days ago when i started it up it started pouring white/blue smoke out of the exhaust which quickly filled the entire area. does anone know what is wrong because i have only been doing this a short while and have no idea.

tim

Just a thought Tim. Is there too much oil in it? otherewise could be worn piston rings maybe.

i checked the oil in it i think it is at the right level so it mustbe the piston rings have gone. thanks spit-bang

tim

Could be the rings have got stuck in their grooves.  Standing w/o being started for years or lots of cold running can do that.  
I currently have two engines with that problem, anyone found a good way to unstick them, w/o stripping the pistons out and cleaning the grooves?.

have you oiled the valves? i did that and because they have no valve seals the oil seeps through. the bore could be glazed. my bore was also glazed, after a quick hone and two rallies the smoke has cleared.

as for unsticking without removing the piston rings you can soak in paraffin or similar for a week or so, then using a brass wire brush give them a good clean.
hope this helps,
callum