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Hooked
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Hooked
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Just curious about the two coolant hoses on the GT200 that meet at the bottom side of the carb to union called the heater kit. Can someone explain the function of this?
@caschnd1 avatar
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Grumpy Biker
1980 Vespa P200e (sold), 2002 Vespa ET4 (sold), 1949 Harley-Davidson FL
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Posts: 5575
Location: Sparks, Nevada, USA
 
Grumpy Biker
@caschnd1 avatar
1980 Vespa P200e (sold), 2002 Vespa ET4 (sold), 1949 Harley-Davidson FL
Joined: UTC
Posts: 5575
Location: Sparks, Nevada, USA
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It passes hot coolant from the engine and warms the plate. This heats the intake and carb which promotes a better fuel burn. Especially on cold days.

-Craig
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Hooked
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Hooked
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Thanks, I appreciate the responds.
@giles avatar
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Hooked
Silver '06 GT200
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Posts: 237
Location: SoCal
 
Hooked
@giles avatar
Silver '06 GT200
Joined: UTC
Posts: 237
Location: SoCal
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I suspect the reason for the hoses is a little more obscure but very important. The heated throttle area prevents icing in cool weather. When riding in ambient temps in the 32-40F (0-5C) range and high humidity, water in the air can freeze as it passes through the Venturi. Fuel atomization and increased velocities cool the air. The ice forms in layers and can completely close off airflow stalling the engine. It can be difficult to diagnose. By the time you remove the air cleaner (or have it towed) the engine heat will melt the ice and the engine will start right up.
⬆️    About 1 year elapsed    ⬇️
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Lurker
vespa gt200
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Location: uk
 
Lurker
vespa gt200
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Location: uk
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