• 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     WR = 2st Enduro & CR = 2st Cross

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

All 2st Carb Vent question

C

Captain Bob

Husqvarna
C Class
Last time I rode my 99 WR250 (just before snow, temp not that cold) I noticed it seemed to be smoking heavily. Even after running for a few miles. I also noticed what may be a hi speed detonation in the 3/4 throttle range while under acceleration. Clearly signs of a lean engine.

Although the symptoms sound like a crank seal, I found something yesterday and wanted to check it out. I noticed most of my carb vent hoses were pinched shut. Looks like I may have pinched them between a frame crossmember and the skid plate. Is it possible the carb vent hoses, if pinched, could cause a lean condition?

The top end is not recent but does not have that much time on it either. The engine has very strong comression and runs great.

Any thoughts?
 
Yes, that could cause a lean condition. Reason is that if the carb can't vent, then the in coming fuel can't displace the air in the bowl.

The smoke could have been oil being burned from the pipe due to the heat of the lean condition. If you do a lot of low speed trail riding there could have possible been a good build up of oil on the pipe walls that got burned off.

Fix your vents and try it again.
 
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