• Ciao Guest - You’ve landed at the ultimate Guzzi site. NEW FORUM REGISTRATIONS REQUIRE EMAIL ACTIVATION - CHECK YOUR SPAM FOLDER - Use the CONTACT above if you need help. New to the forum? For all new members, we require ONE post in the Introductions section at the bottom, in order to post in most of the other sections. ALWAYS TRY A SEARCH BEFORE STARTING A NEW TOPIC - Most questions you may have, have likely been already answered. DON'T BE A DRIVE-BY POSTER: As a common courtesy, check back in and reply within 24 hours, or your post will be deleted. Note there's decades of heavily experienced Guzzi professionals on this site, all whom happily give endless amounts of their VALUABLE time for free; BE COURTEOUS AND RESPECTFUL!
  • Be sure to see the GTM STORE link also above for our 700+ product inventory, including OEM parts and many of our 100% Made-in-SoCal-USA GTM products and engine kits. In SoCal? Click the SERVICE tab above for the best in service, tires, tuning and installation of our products or custom work, and don't miss our GT MotoCycles® (not) art on the BUILDS tab above. WE'RE HERE ONLINE ONLY - NO PHONE CALLS MADE OR RECEIVED - DO NOT EMAIL AND ASK QUESTIONS OR ASK TO CALL YOU.
  • There is ZERO tolerance on personal attacks and ANY HYPERLINKS to PRODUCT(S) or other competing website(s), including personal pages, social media or other Forums. This ALSO INCLUDES ECU DIAGnostic software, questions and mapping. We work very hard to offer commercially supported products and to keep info relevant here. First offense is a note, second is a warning, third time will get you banned from the site. We don't have the time to chase repeat (and ignorant) offenders. This is NOT a social media platform; It's an ad-free, privately funded website, in small help with user donations. Be sure to see the GTM STORE link above; ALL product purchases help support the site, or you can upgrade your Forum profile or DONATE via the link above.

Lemans III engine ventilation issue

C

Connor Abendschein

Just got it firing!
Joined
Sep 9, 2018
Messages
2
Reaction score
0
Location
Denver
I am Installing the Y vent tubes on my 83 lemans III and am in need of a diagram or description on the proper routing for said vent tubes that connect to the frame.
There is lots of oil coming through the air box and an excessive amount dripping after every ride.
Any insight would be greatly appreciated!
 
I have removed my airboxes for just that reason w/LM3 and Cal2 were almost new.
But, if I remember correctly the Y that plugs onto bottom : one hose goes behind starter to a bracket on bellhousing bolt and outside air, other hose goes to smaller barb on frame center tubing by steering head.
Also a larger S shaped hose goes from check valve on top of bellhousing up to large barb by steering head. There is a smaller hose for condensed oil vapors, small barb on frame cross section to small tube on bellhousing. Been over 30yrs but I think that's how it goes.
 
Last edited:
If you are getting a large amount of oil in the airbox you may be over filling the crankcase. Most of these engines will pump oil out until it reaches a level where it doesn't. If you continue to fill, it will continue to pump. I've run the stock system similar to the LM III on every California/EV series bike I have owned without issue. The happy spot is usually about half way between the full and add mark on the dipstick.
 
You must log in or register to reply here.
Back
Top