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 The previous version was outdated and no longer supported.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

The 390 won't start

Blimey, this bike is testing me! Still suffering from the same problem. I spent two hours last night cleaning out the engine and still the plug is being flooded. It runs for about 5 seconds then dies. I have adjusted the float height three times, trying it effectively lower and lower each time. I even put the flat slide back on, but it wouldn't start at all with that carb on.

So I am wondering if I am barking up the wrong tree. I have another question. Could the exhaust be causing this? The exhaust is the original and am I right in saying that it is a double skin assembly? When I first took the bike apart I found loads of bits of the inner layer floating around inside the exhaust, and now that it has run a bit, it sounds like there are quite a few large bits moving around inside. If one of these bits managed to get lodged and partially block the exhaust could that cause a problem like this? I really am running out of ideas now and would welcome any more suggestions. :banghead:
 
If its a CR you should have a single wall pipe the WR's had double walls on some models. I would take the pipe off and see what comes out. Sounds like a carb problem letting that much fuel in the engine.
 
The pipe was off last night and that is when I heard the pieces rattling around inside. The pipe is originally off an OR390, so explains the double wall. The pieces must be quite big because I cannot get them to fall down to either end of the pipe. I have been focusing on the carb, although it is brand new. One of the guys correctly suggested float height but I have adjusted that correctly now and it still has the same problem.
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Have you checked the needle and seat and also the floats on the pins that they go up and down freely. Try to start it with the gas tap off after the bowl is full and see if it will run for a little bit and then try it again with the tap open and see if it floods out that should give you an indication of the needle or float situation. If I had an extra carb I'd send it to you.
Bill
 
Murph, I have emptied my pipe out twice. Once cutting it open where the extension is to remove the big pieces. I pulled a 1x3 in" piece out the back last night. New pipe is out of budget at the moment. Try pulling the carb out of manifold and hang straight turn on gas so you can see if needle and seat are holding.
geary
 
Also, if you still have the stock 45 pilot jet, you might try dropping a couple of sizes to clean up off-idle throttle response.
 
Well, at last the bike is running and sounding great.
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Problem turned out to be that pesky exhaust pipe. I am guessing that one of those rougue bits of rusty metal inside the pipe managed to get lodged and block or partially block the pipe, and the motor just did not like it. Tried a different pipe and she started up, burbled a bit while she cleared out the cases again, then she sounded great. Nice crisp response with the new carb. I am riding her at Hawkstone Park on Saturday so will go up to the standard 430 main from the 390 that is fitted as I don't want her to nip up in the Hawkstone sand, but otherwsie I think she is there.

I will get some pics in the next few days and post them on the restoration thread I started a while back.

Thanks to everyone who contributed to this thread, it is really appreciated.
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