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08-11-2004, 09:32 PM
| #1 (permalink) |
| In Training  Joined: Apr 2004
Posts: 128
  |  What exactly does the choke do? My 1981 GS450-S is my first bike, and it's my first carbureted vehicle. I understand basically that a choke is necessary to limit how much air goes into the carburetors while it's cold, but I don't understand why this is necessary. Anyone have a good detailed explanation?
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08-12-2004, 01:41 AM
| #2 (permalink) |
| Site Wrench Head   Joined: Nov 2003
Bike: crashed
Location: Duncan B.C.
Posts: 635
 | it restricts the air going to the cylinders. In doing so, the vacuum moves further down the venturi(narow section of the carb) which causes a low pressuer area and makes the "choke circuit" feed more fuel to the cylinders. A ritcher fuel mixture ignights more easly and the choke circuit also incorperates an idle increase at the same time vis a mechanical stepped cam that contacts a second idle screw.
__________________ A truly wise man asks more questions than he answers, I think I must be retarted |
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