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my yamaha is spewing out gas



 
 
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  #1  
Old May 19th, 2006, 10:03 PM posted to rec.outdoors.fishing.saltwater
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Default my yamaha is spewing out gas

my 97 yamaha is spewing out gas from the carb i'm a new boat owner
please help boat has sat for almost a year

  #2  
Old May 19th, 2006, 10:55 PM posted to rec.outdoors.fishing.saltwater
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Default my yamaha is spewing out gas


wrote in message
oups.com...
my 97 yamaha is spewing out gas from the carb i'm a new boat owner
please help boat has sat for almost a year

Is it a two-stroke? My first guess would be something keeping a reed valve
open, as the piston comes back up the bore, causing blow back. The reed
valves, if the engine is equipped with them, are mounted between the carbs
and the cylinders.
how did you notice this? Is there an airbox, or air filters on the carbs?
Lack of filters could have allowed something down the airways, and lodged
into a reed, holding it open.
just my guess......
Ed


  #3  
Old May 19th, 2006, 11:13 PM posted to rec.outdoors.fishing.saltwater
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Default my yamaha is spewing out gas

yea there an air box but it didnt have any kind of filter

  #4  
Old May 19th, 2006, 11:15 PM posted to rec.outdoors.fishing.saltwater
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Default my yamaha is spewing out gas

yea but it had no filters in it

  #5  
Old May 20th, 2006, 03:31 PM posted to rec.outdoors.fishing.saltwater
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Default my yamaha is spewing out gas


wrote in message
oups.com...
yea but it had no filters in it

Have you done anything to the exhaust recently? Changes in the exhaust can
cause what you describe, on a 2 stroke. I'm still going with the stuck reed
valve theory.
Is it a 2 stroke?

Ed


  #6  
Old May 20th, 2006, 03:34 PM posted to rec.outdoors.fishing.saltwater
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Default my yamaha is spewing out gas

yes its a two stroke

 




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