Wildguzzi.com
General Category => General Discussion => Topic started by: guzzista on March 08, 2018, 05:16:23 PM
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after a 20mile run at approx 80+ mph and about 6krpm, I noticed some engine oil from the breather tube on the center stand and rear wheel rim. The bike is a low mileage unit, has no smoke on start-up, and asides from the recent event does not use oil The breather is flow- through stock unit as per Guzziology and has a check ball type valve is in the engine metal breather tube. The multiple choice questions then are: a) get a catch can , b) Agostini Breather ( worked great on my hot rodded CX) c) Engine rebuild.
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(d) Do a leak down, report.
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The flap in the breather is possibly your problem. I had the same issue with my CX on a 1100 mile trip and it was something I discarded until I got to my location and finally removed the breather and knocked out the flap. End of problem.
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Over serviced maybe?
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You said your can if free-flow, is that no flap/disc on a spring? Could be the check valve ball got stuck, then opened causing the mess. Mine has gotten stuck and blew the rear main seal.
I have also seen the whole check valve up the hose from being stuck.
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My bet is it's trying to puke 1/2 qt so it's halfway on the stick, then it will stop.
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My bet is it's trying to puke 1/2 qt so it's halfway on the stick, then it will stop.
oh yea
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Sorry to disappoint the quick guessers , but the 3 quarts and a tiny bit more (3 liters) has been general knowledge for me since the 1970's when I first got my Ambo. As per the flap inside the breather, I did bust it as per Guzziology. The ball check valve does need to be looked at as its been a couple years since I did that. Chuck maybe onto something as the leakdown was just about 20% when last checked, but this is an old bike and s***t happens. Will report on the next findings. Cheers
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Do you have the shallow sump the bike came with or have you added a sump extender? The basic problem is probably crankcase over-pressurization from sustained riding at higher rpm. If you haven't added a sump extender, it's the first thing I would do to deal with the oil-puking-out-the-breather problem. And, with a deeper sump, continue to use just the standard 3 quarts/3 liters of oil.
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It's my understanding that it's 3 liters if/when dropping the pan and replacing the filter, and 2.5 liters when doing a normal oil change. I came across this somewhere on this forum I believe about a year or so ago.
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Sorry to disappoint the quick guessers , but the 3 quarts and a tiny bit more (3 liters) has been general knowledge for me since the 1970's when I first got my Ambo. As per the flap inside the breather, I did bust it as per Guzziology. The ball check valve does need to be looked at as its been a couple years since I did that. Chuck maybe onto something as the leakdown was just about 20% when last checked, but this is an old bike and s***t happens. Will report on the next findings. Cheers
20% is a *lot.* <shrug>
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This ^^.
3 qts. = 2.8 liters. I use 3 qts. exactly, no more.