Remove the fuel filter. Take a clear bottle and allow the fuel to
drain into the bottle from the inlet side. You may want to take some
air pressure, and blow all the fuel out of the filter. Now hold the
bottle up to the light. If you see a metallic sparkel in bottom of the
bottle your fuel pump is probably ready for replacement. Replace the
fuel filter at the same time. Get new copper washers to seal both the
new pump and filter. You could wait for it to fail as long as it seems
to being the job.
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