monty_jon Report post Posted March 22, 2016 (edited) Just bought a BSA B25 and stripped it down for a service, on inspection I found quite a lot of sludge/carbon in the oil tank strainer, is this normal? Don't think its dirt as the bike's never been offroad When I collected the bike it ran fine, All the bikes I’ve previously owned have always been clean Edited March 22, 2016 by monty_jon Quote Share this post Link to post Share on other sites
jon v8 Report post Posted March 22, 2016 Perfectly normal on a bike that has had way less oil changes than it should... Considering their reputation,not a wise engine to pick on for abuse. Quote Share this post Link to post Share on other sites
totalshell Report post Posted March 23, 2016 (edited) look on the brightside.. it was in the trap.. clean it all up put fresh cheap oil in and run for 1 hour, make sure the oil is returning to tank than empty it out clean it up again and run proper oil for 5 hours ( two trials ) between changes.. Edited March 23, 2016 by totalshell Quote Share this post Link to post Share on other sites
monty_jon Report post Posted March 23, 2016 look on the brightside.. it was in the trap.. clean it all up put fresh cheap oil in and run for 1 hour, make sure the oil is returning to tank than empty it out clean it up again and run proper oil for 5 hours ( two trials ) between changes.. Yes, thats what I have done, did it for 15min with some cheap 20/50 & engine flushing fluid And just done it again after an hour on 20/50 Sounds fine, but I was just worried about the big-end as they are quite a fragile engine! Quote Share this post Link to post Share on other sites
