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 The previous version was outdated and no longer supported.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

Strange engine noise

BentAero

BentAero

Husqvarna
A Class
I have a frequent, but not 'always' engine noise that I can't figure out. A clatter that sounds like valve-train noise. I suspect it may be coming from the auto-decompression device, but disassembling it doesn't show any problems or cure it. The clearances are as follows:

Left int .005
Left exh .008

Right int .004
Right exh .006


The noise only occurs at higher rpms when riding real hard. It doesn't do it until the engine is at full temperature, and even then, doesn't do it when putting around slow at low rpms.

Even though the right side clearances are a healthy (not tight) .004 and .006, (minimums) do you think maybe when the engine is hot it could be 'tightening up' the clearances and causing the clatter?

Weirdest thing is, it doesn't always make the noise. It comes and goes... some rides it's there, some rides it's not. This has been happening on and off since about the 400 mile point. Current mileage is 1500. Also, no effect whatsoever on power or performance. It 'runs' just fine.

Ideas?
 
possibly the cam chain tensioner, even if it looks ok sometimes the grooves are a little worn and allow it to slip or rattle about a bit.
i had a similar noise and it didnt go away even after a new piston, cam chain and valve adjustment, plus checking the decompressor. (i was doing maintenance at the time not replacing them due to the noise).

anyhow i read probably here about the tensioner and just replaced it. noise gone ! check the teeth of it maybe to see?
 
BentAero;89502 said:
I have a frequent, but not 'always' engine noise that I can't figure out. A clatter that sounds like valve-train noise. I suspect it may be coming from the auto-decompression device, but disassembling it doesn't show any problems or cure it. The clearances are as follows:

Left int .005
Left exh .008

Right int .004
Right exh .006


The noise only occurs at higher rpms when riding real hard. It doesn't do it until the engine is at full temperature, and even then, doesn't do it when putting around slow at low rpms.

Even though the right side clearances are a healthy (not tight) .004 and .006, (minimums) do you think maybe when the engine is hot it could be 'tightening up' the clearances and causing the clatter?

Weirdest thing is, it doesn't always make the noise. It comes and goes... some rides it's there, some rides it's not. This has been happening on and off since about the 400 mile point. Current mileage is 1500. Also, no effect whatsoever on power or performance. It 'runs' just fine.

Ideas?
Click to expand...
Your problems are more than likely unique to you. Not many people ride Huskys as fast as you. Do you think if I lost about 50lbs my bike will go that fast? Enjoyed riding with you at Enoree****************************************
 
Thanks Wadman. Yes, your bike will go faster, and you don't even have to lose any weight. Just turn that thingy on the right handlebar a little farther, then hold it there. ;)

Wanna go again tommorow? (Saturday) I'll be there...
 
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