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 The previous version was outdated and no longer supported.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

Valve issue on a TE310 (2011)?

bfalcao

bfalcao

Husqvarna
AA Class
Dear all,

After detecting some loss of compression during kickstarting, I inspected the valve's clearance and found that the gap of the right intake valve was completely inexistent, no clearance at all. I re-shimmed with a 1.40mm shim (original was 1.65mm) and the clearance become spot on.

500km later the loss of compression during kick starting come back. I checked the valves again and found that there wasn't any clearance in the same valve (all other were in spec).

Is it normal for a valve to stretch at least 0.40mm (0.25mm + 0.15mm) in such short time??? Can it be a symptom of a bent valve, deformed valve face, defective valve seat, or something else? How worried should I be atm??

The bike has ~7500km.


Many thanks in advance.

PS - It may be nothing but both times I also found small black debris in the hollow part of the cam, but can’t tell where it might come from ... maybe some seal debris?

20200510_072751_IMG_7496.jpeg
 
Your situation is common. The issue is dirt has entered the engine and worn the hard facing off the inlet valve. You need to replace it. It’s common for the RHS intake to wear first due to the angle of the intake from the throttle body.
 
hhdwtmtw said:
Your situation is common. The issue is dirt has entered the engine and worn the hard facing off the inlet valve. You need to replace it. It’s common for the RHS intake to wear first due to the angle of the intake from the throttle body.
Click to expand...

Thank you for the insight. In your opinion, should I replace the LHS valve as preventive maintenance as well? Though, it never had to be adjusted since new, neither the exhaust ones...
 
Check the valve surface where it contacts the cylinder head seat with a LUPE 20x magnifying eyepiece. My LHS inlet was fine however I replaced both anyway.
You can probably leave the LHS valve if the clearance hasn't changed.
I didn't need to touch the exhaust valves, they had not moved.
 
Thanks once again. I'll investigate everything carefully asap and update this thread accordingly.
 
You must log in or register to reply here.
Back
Top