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  #1  
Old 11 Jan 2011
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DR650 Choking at high speeds

hi all,

im in Argentina, Bariloche. My DR650SE (2006) is running great... apart from at high speeds (between 50-70mph) if i give her a bit to overtake, she chokes and splutters until i lay off the throttle. I discovered this while overtaking a bus and two cars with on comming traffic... was a near miss. I had a previous problem where the bike would do the same thing at any speed. This ended up being the vacuum hose from the fuel tank (after market over sized tank), not sure if the hose was blocked or kinked as my spanish at the time of this problem was minimal. Although the current problem seems to be the same symptoms apart from happening only at high speeds when accelerating fast.. any ideas.. people?

thanks!
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Old 11 Jan 2011
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Could be a similar issue.

It might be a fuel feed problem which could be down to the breather restricting the amount of air into the tank and therefor the fuel flow out. Or a kinked fuel line. If you run with the fuel cap loose does the problem happen ?

How clean is your air-filter ? a choked up filter can give the same issues.

Are you at a higher altitude than your bike is set up for ?
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Old 12 Jan 2011
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Have you also checked that little white stock filter in the carb inlet - just another possibilty.
Daryll
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Old 12 Jan 2011
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Check also the little filter for the carb breather tube under the seat. Mine had a little bit of rag sucked into it and showed the same symptoms you're describing.

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Old 12 Jan 2011
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hmm thanks people will have a look at these things this arvo.

thanks
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Old 13 Jan 2011
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Definitely sounds like some sort of fuel blockage. I suggest removing the fuel bowl and needle valve to make sure there isn't any grit or sand in there.
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Old 13 Jan 2011
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ok problem solved! It was a seriously blocked vacume hose full of black grit... No idea what the stuff was. Or how it hot there. Was part of the vacume hose after the valve before the little black box... Sorry for the grammer... Writing from a mobile
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Old 13 Jan 2011
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ok im on a computer now so i will be a little clearer for everyone.

i blew through the vaccume hose and realised their was a blockage somwhere in the line. So through a process of elimination i discovered the hose connecting to the canister (red stripe, inlet) was block with a large amount of black grit..

no idea how it got there as i just bought the bike.

DR650SE 2006 18000 miles

although now she runs sweet

=andrew
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Old 13 Jan 2011
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Don't forget to clean the air filter regularly, it's amazing how much crap gets in there on SA roads.
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