Question about 2004 Husaberg Fe 650 e

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Backfire Extremely powerful/loud backfires often on startup and always when decelerating on the highway

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Backfires are when fuel travels through the cylinders without combusting then explodes in the exhaust pipe. Fuel supply/combustion issue. It seems likely there's a problem either with the mix going into the cylinders (carbs fuel lines or air intake), or with timing. These can affect a bike at particular speeds and throttle positions. If using the choke has helped at some point that's a further indication (the choke changes the gas/air mix). ,,,

Posted on Nov 10, 2008

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Anonymous

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SOURCE: Backfire

Backfires are when fuel travels through the cylinders without combusting then explodes in the exhaust pipe. Fuel supply/combustion issue. It seems likely there's a problem either with the mix going into the cylinders (carbs fuel lines or air intake), or with timing. These can affect a bike at particular speeds and throttle positions. If using the choke has helped at some point that's a further indication (the choke changes the gas/air mix). ,,,

Posted on Nov 10, 2008

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Anonymous

  • 2712 Answers

SOURCE: Backfire

Backfires are when fuel travels through the cylinders without combusting then explodes in the exhaust pipe. Fuel supply/combustion issue. It seems likely there's a problem either with the mix going into the cylinders (carbs fuel lines or air intake), or with timing. These can affect a bike at particular speeds and throttle positions. If using the choke has helped at some point that's a further indication (the choke changes the gas/air mix). ,,,

Posted on Nov 10, 2008

Anonymous

  • 2712 Answers

SOURCE: Backfire

Backfires are when fuel travels through the cylinders without combusting then explodes in the exhaust pipe. Fuel supply/combustion issue. It seems likely there's a problem either with the mix going into the cylinders (carbs fuel lines or air intake), or with timing. These can affect a bike at particular speeds and throttle positions. If using the choke has helped at some point that's a further indication (the choke changes the gas/air mix). ,,,

Posted on Nov 10, 2008

Anonymous

  • 2712 Answers

SOURCE: Backfire

Backfires are when fuel travels through the cylinders without combusting then explodes in the exhaust pipe. Fuel supply/combustion issue. It seems likely there's a problem either with the mix going into the cylinders (carbs fuel lines or air intake), or with timing. These can affect a bike at particular speeds and throttle positions. If using the choke has helped at some point that's a further indication (the choke changes the gas/air mix). ,,,

Posted on Nov 10, 2008

Anonymous

  • 2 Answers

SOURCE: Backfire

I have a2008 GR650S and had the same problem. Bought the secondary air injection kit (see link) and the problem as solved. However it does affect the anti-polution compliance for the bike. Fitting the blanking plate to the rear cylinder is difficult.

http://www.epfguzzi.com/hyosung/accessories/AIS.html

Posted on Jul 24, 2009

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