Walbro Carb

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RC Master

RC Master

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Hi any feedback on my walbro carb it wont pump in the gas

I already did and checked the following

Change gas line both supply and return
Checked the fuel clunker (filter)
Change diaphragm on the carb
Checked the connection for leak or blockage and there is none

What other suspect should I explore

All carb have been cleaned recently and no visible dust or grim deposits anywhere. I am stumped
 
With all you did, if you did it right it should have no issues pumping fuel. But any way. Which diaphragm did you replace? By it won't pump fuel, are you talking about the purge bulb? Have you checked the screen in the carb? Are you sure you have the gaskets in the right order?
If you need pics go and have a look at the carb sticky. Would also be helpful to know what model of carb your working on.
 
Seandonato73 said:
With all you did, if you did it right it should have no issues pumping fuel. But any way. Which diaphragm did you replace? By it won't pump fuel, are you talking about the purge bulb? Have you checked the screen in the carb? Are you sure you have the gaskets in the right order?
If you need pics go and have a look at the carb sticky. Would also be helpful to know what model of carb your working on.
Click to expand...
WT668 and yes the gaskets are in order from the bottom is the black open space gasket then the mesh and on top the diaphragm I tried is 2-3 different diaphragm and this is happening on 2 of my walbro 668?

Yes the purge bulb is not pumping fuel in to the return
 
RC Master said:
WT668 and yes the gaskets are in order from the bottom is the black open space gasket then the mesh and on top the diaphragm I tried is 2-3 different diaphragm and this is happening on 2 of my walbro 668?

Yes the purge bulb is not pumping fuel in to the return
Click to expand...
Did you check the check valve in the center of the purge valve? Little red thing. Acts as a 2 way check, if either side is tore it won't work right.
 
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