Go Back   Motorcycle Forum > Manufacturer Forums > BMW

Thread Tools
Old 04-01-2011, 10:57 AM   #1
Registered Member
ski2udie's Avatar
Join Date: Apr 2011
Location: Chicago suburbs
Posts: 1
Unhappy Help! 1980 R65 Belching Smoke

Fired up my 1980 R65 after a short winter's inactivity, battery check, fluids check, lights and controls, check, etc. Started up fine, normal choke, nothing amiss. Took off for a spin around the neighborhood.

Got about a mile and engine started surging and died.

Checked fuel valve, on. Reset choke. Restarted and blew a huge cloud of blue-white smoke, reved up fine. Then sputtered out. Repeated this a couple of times until noticed oil on the ground under the bike. Not good. Pushed it the mile or so home (hard to look cool pushing your old bike).

What's likely the problem? Gaskets/seals?
ski2udie is offline   Reply With Quote

Sponsored Links Remove Advertisements
Motorcycle Forum
Old 04-01-2011, 11:02 AM   #2
Morbo the Destroyer
Registered Member
Morbo the Destroyer's Avatar
Join Date: Oct 2010
Posts: 1,307

Might be a lot of oil seeped past the valve seals when it sat. Or, one or more rings froze for the same reason.
Fun Facts to Know and Tell!

Thomas Jefferson wrote that the 1st Amendment erected a "wall of separation" between the church and the state (James Madison said it "drew a line," but it is Jefferson's term that sticks with us today). The phrase is commonly thought to mean that the government should not establish, support, or otherwise involve itself in any religion.

Its.......A FACT!
Morbo the Destroyer is offline   Reply With Quote
Old 04-01-2011, 03:11 PM   #3
Easy Rider 2
Join Date: Dec 2010
Location: North Central Florida
Posts: 863

Originally Posted by ski2udie View Post
What's likely the problem? Gaskets/seals?
The answer to that depends a whole LOT on where that oil on the ground is coming from.

I think valve seals is probably out as that would have shown up pretty much immediately upon starting.

Could be a stuck ring.
Could be a cracked piston.
Could be a stuck float putting gas into the crankcase and causing it to be overfilled.
Could be a blown gasket.
Could be a stuck valve in a PCV system.....or similar, pumping oil into the air box.

You need to do some basic investigation first......which includes tracing back the escaping oil, looking at the plugs and maybe doing a compression test.
'17 CanAm Spyder RTL
Easy Rider 2 is offline   Reply With Quote

Thread Tools

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off