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Pilot jet rubber plug

  • Thread starter Thread starter 1980c10
  • Start date Start date
1

1980c10

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What would be cause if a bike was ran with no rubber plug on the pilot jet? No I am not running mine without I am buying brand new ones. But when I pulled the bowls off the rubber plug on the #4 carb was not there.
 
1980c10 said:
What would be cause if a bike was ran with no rubber plug on the pilot jet? No I am not running mine without I am buying brand new ones. But when I pulled the bowls off the rubber plug on the #4 carb was not there.
Click to expand...
The plug forces the pilot jet to get fuel from same cavity as the main jet-so there MIGHT be transition problems. Oddly enough on some Keihin carbs (cv type), the pilot jet just sits next to main jet, slighty higher, to gulp on its own.
 
So technically there should be a rubber plug in all of the pilot jets?

I had wondered about this, all mine are missing.

thx
 
glenlloyd said:
So technically there should be a rubber plug in all of the pilot jets?

I had wondered about this, all mine are missing.

thx
Click to expand...
They should all be there. There is a port between the cavities of it and the main, which by the way you need to make sure it's not clogged when cleaning. But it's fairly large so it probably won't be.
 
On almost all the Suzuki GS CV carbs the fuel is sucked through the main and diverted to the pilot through a large port connecting them. When the needle starts to rise out of the main the fuel is then sucked through the needle jet.
If the plug is not installed it will run very rich.
 
the hole can be tapped and a threaded plug used, I did this on a Kawasaki, it was recommended with the jet kit....
 
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