Sumping

won,t start

Knucklehead topics
Post Reply
white1j0
Site sponsor
Site sponsor
Posts: 238
Joined: Mon Apr 09, 2012 7:38 pm
Bikes: '02 Fatboy, '47 Knuckle, '52Pan
Has thanked: 47 times
Been thanked: 4 times

Sumping

#1

Post by white1j0 » Thu Jun 14, 2018 7:01 pm

I got my '47 Knuckle completed about a month ago, was firing up w/3 primer kicks weather cold or hot, about 2 weeks ago it started sumping oil into the primary, about a 1/2 pint on the floor, so I took the advice of one of the members and put in a Viton ball, yesterday I checked the oil and the tank was empty, all the oil about 3 quarts is in the crank case, and I can't even get the bike to fart, could this be a reason for the bike not starting, and what is the best way drain the crank,also I swapped back the steel check ball, and I seen it was .005 smaller then the steel ball. Thanks Whitey



Lowbikemike
Posts: 179
Joined: Thu May 07, 2009 3:49 am
Bikes: 1962 FL
1987 FXSTC
1995 FLHR
Location: Columbia, IL
Has thanked: 1 time
Been thanked: 11 times

Re: Sumping

#2

Post by Lowbikemike » Fri Jun 15, 2018 11:13 pm

I would think a good portion of the oil is sitting in or leaking out of the primary. I would just kick it through and let the oil come out the breather. I would not try to remove the crankcase plug. When the engine is in the frame the plug is hard to get to and easy to crossthread when trying to reinstall.

Post Reply

Return to “Knucklehead”