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 The previous version was outdated and no longer supported.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

2010 TE 250 Black carbon buildup on spark arrestor

rlight

rlight

Husqvarna
B Class
I pulled the spark arrestor out of the Akropovic exhaust on my 2010 TE250 and it was covered in black carbon. It was not an oil residue and it didnt smell oily.

I have a platinum plug and a EFI tuner on the bike. The bike is not using oil, is running fine and has 2000 km (45 hrs) on it. Exhaust and inlet gaps are right in the middle or their range.

Any ideas what this could be from?

Thanks, Rich.
 
Sounds quite normal to me, we don't run spark arrestors here but I imagine they would catch the normal carbon build up as it exits the exhaust?
 
OlderHuskyRider said:
Do you track your MPGs or miles per kilometer?
Click to expand...
No, I dont track the mpg accurately on each trip, but I get 62 km out of a tank until the reserve light comes on (6.5l - 1l reserve (guessing)), so that calculates out to 26.5 mpg or 8.87l/100km. How does that consumption seem to you?
 
rlight said:
No, I dont track the mpg accurately on each trip, but I get 62 km out of a tank until the reserve light comes on (6.5l - 1l reserve (guessing)), so that calculates out to 26.5 mpg or 8.87l/100km. How does that consumption seem to you?
Click to expand...


You are burning rich, causing the black, unburned gas/carbon. I am burning a pretty rich program and I get 32mpg on my 450, causes my spark plug to be a little dark, but I don't have any carbon build-up inside my exhaust pipe. Use your EFI tuner to lean out the bike in the most common RPM ranges that you use the bike.
 
rlight said:
No, I dont track the mpg accurately on each trip, but I get 62 km out of a tank until the reserve light comes on (6.5l - 1l reserve (guessing)), so that calculates out to 26.5 mpg or 8.87l/100km. How does that consumption seem to you?
Click to expand...
Hi mate. You should be getting more than that from the tank before reserve, unless your trails are very slow and tight or you are super fast. You might be a bit rich - what's your spark plug like, is there a lot of carbon/fouling? I do get a bit of soot in my silencer but doesn't affect anything though.
 
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