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How to check it fuel pump is bad on Belarus 250AS

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Posted by Jack on October 05, 2003 at 15:22:47 from (

The tractor starts up and will run for 5mins or
more if idle. If I put under load a bit then it will start to slow down. It doesn't seem to have the power it had a few months ago. I have replaced and cleaned all fuel filters.
I wonder if the fuel pump is just about gone?
What are the symtoms of a bad fuel pump.
Smoke is clean not real black or white.
It just runs for awhile then slowly dies out.
Would dirty injectors act like that.
Im thinking the pump must be going?

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