• Husqvarna Motorcycles Made In Sweden - About 1988 and older

  • 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 The previous version was outdated and no longer supported.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!

Can anyone tell me how to do a leak down test?

Grunbay

Husqvarna
AA Class
I have a 1987 CR430 that may be needing new seals. I have a nice Snap-on leakdown tester that I got cheap on ebay, but I don't know how to properly use it. Also, it seems that I could easily blow out good seals by using too much pressure!

Any experienced mechanics out there able to run me through this process?
 
On a 2 stroke its not a blow by test.
Its a vacuum test, plug exhaust and intake and see if it hold 6 or so inches of vacuum.
When it wont maintain some neg pressure, the crank seals are needed
 
I've always used pressure as a leak down test. Rule of thumb I was taught years ago is:
pump it up to 6 psi, should not drop more than 1 psi in six minutes.

I use an expansion plug in the exhaust, then made a plug with a gauge port and a schrader valve, in the intake manifold.

 
I've always used pressure as a leak down test. Rule of thumb I was taught years ago is:
pump it up to 6 psi, should not drop more than 1 psi in six minutes.

I use an expansion plug in the exhaust, then made a plug with a gauge port and a schrader valve, in the intake manifold.



Hey, um Ron. The other day after you clocked out from work. The boiler in the basement of the building, stopped working. Boiler guy said the pressure gauge, some pipe and the blow off plug were missing? Ha, nice set up!
 
Hey, um Ron. The other day after you clocked out from work. The boiler in the basement of the building, stopped working. Boiler guy said the pressure gauge, some pipe and the blow off plug were missing? Ha, nice set up!

I know nothing!!
 
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