Originally Posted by chestypuller1970
wonder if theres some sticking of the oil rings too with carbon, anyone ever run a strong dose of chemtool thru klrs? how about seafoaming the intake?
I don't think that anyone has ever found any of the three rings on a KLR piston stuck from carbon build-up.
I'll list several of the major reasons for KLR oil consumption in decending order, IMO.
Too much oil on the cylinder wall, especially at higher RPM's with stock oiling system.
Too few & too small of oil return holes in & below the oil ring on standard oem piston.
Potentially miss-machined #2 ring on the 2008-2009 models, It is the final oil scraper, not actually a compression ring!
Non-concentric or tapered cylinder wall.
Uneven / Inconsistent engine temps with standard cooling system.
Too cold of overall engine temperature, both coolant & oil.
Dust ingestion from improper air filter servicing or melted holes in the bottom of the air box or missing drain plug.
And yet the lowly KLR650 engine will still run 100,000+ miles if we will simply keep the oil level UP.
Broken ring lands due to hydro-locking a gasoline or water flooded cylinder or detonation cause way too much oil consumption to continue feeding them that much OIL. >1 qt per 200 miles.