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 The previous version was outdated and no longer supported.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

Engine Surging - Worn needle

MATPOC

MATPOC

Husqvarna
AA Class
Was reading somewhere that surge cause is unknown and the fix is installing iridium plug, which seems like an odd solution, so I decided to look in the carb for answers.
Slide needle looks worn out, so I got new one and also emulsion tube, both are common wear items in some thumpers and twins, so it's worth a shot

Parts came in a while ago and while I'm waiting for transmission washer I decided to go through the carb.
I was unable to measure the emulsion tube ID but the needle has about .002in (.05mm) of wear comparing to new one. Doing some measurements of the taper it equals to about 4mm of up/down movement or in layman's terms raising the needle 5 clip positions, that would explain surging and large about of carbon build up n the combustion chamber after only 4,000 miles

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