Re: 650 only running on 2 cylinders
It is a good idea after you assemble the carb to connect the pop off gauge to the fuel inlet, block the return and pump up to 15psi. It should hold this pressure with no problem. If it leaks then you have a bad needel or misadjusted arm/diaphram problem.
I also use it to check the fuel pump diaphram to make sure it hold 10psi for sevaral min.
It is a good idea after you assemble the carb to connect the pop off gauge to the fuel inlet, block the return and pump up to 15psi. It should hold this pressure with no problem. If it leaks then you have a bad needel or misadjusted arm/diaphram problem.
I also use it to check the fuel pump diaphram to make sure it hold 10psi for sevaral min.
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