• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st 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 The previous version was outdated and no longer supported.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!

Radiator cap removal - hiss no hiss sound

2wheeler

2wheeler

Husqvarna
AA Class
Never heard this before on a car. Even before overflow tanks. ;) Engine cold with each level check

Remove cap, fluid just above ribs, no sound

(A few rides pass)

Remove cap, hiss sound, fluid low. Add coolant & ride

Prior to another ride check all hose clamps. Some were a little loose. Removed cap no sound. Had too much coolant. Siphoned level down to just above ribs.

Rode asphalt :eek: a few miles, let cool, level stable, no sound.

Why did I get the hiss sound with an open cooling system? What correlation is there between loose hose connections and the hiss sound?
 
2wheeler said:
.. Engine cold with each level check
....Remove cap, hiss sound, fluid low....
Click to expand...

Hard to tell from your description, but I'd guess a bad vacuum relief valve on the cap (the little center disk in the middle of the lower "rubber").

This is assuming the cap holds pressure to begin with- else: water in the oil? head gasket?

Try a new cap (back in the day: get the cap tested at one of the gazzillions of radiator shops at either end of EVERY small town. In the days before surge tanks and efficient cooling systems, that is)

Good luck.
 
Thanks. Yes the old radiator shops.

With each step the bike was stone cold. It has never made the hiss sound even when new from the dealer.
 
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