Re: Carb issue?
New accelerator pump? is the check valve under the acc. pump working, blocked nozzle bar, is the check valve under the nozzle bars free to move? Yes many times backfire will rip the power valve diaphragm. Remove the top and get a level of fuel in the bowl come back after 1/2 hr is the level the same? If not there is a leak maybe in the PV or it's gasket.
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