Oil Problems
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3rd Gear
Joined: Aug 2016
Posts: 7
Likes: 0
From: Texas
Oil Problems
Having trouble with oil puking out of the breather/carb. 1985 FXWG, any ideas as to what could be causing this? Mind you, the bike has sat for about 5-10 years and hasn't been out for a ride for the better part of 15 years.
Stage II
Joined: Sep 2014
Posts: 2
Likes: 1
From: Chicago
Got similar problem with my 1988 FLHTC. Good oil pressure +20psi, but when starting from sitting for several weeks, it "pukes" 1-2 cups of oil out the breather. On longer trips it uses 1 quart of oil every 600 miles, but no blue smoke. 110K miles.
I never overfill the oil.
I never overfill the oil.
Road Warrior
Joined: Jul 2016
Posts: 1,370
Likes: 439
From: va
Apples402 is correct -- there's a check valve in the oil pump for the oil return to the tank , some oil is getting past the valve and going back into the crankcase , when you crank the engine the oil has to go some where fast -- out the crankcase vent tube into the carb or out on the ground that's all it is , a fix is if you let it set for more than a couple of weeks is to drain the tank and reinstall the oil before next startup or pinch off the return line and open it back before next start up , or do it right and remove the oil pump clean it up replace the valve and keep your fingers crosed
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