Kirwin made a good point, the felt clunk! I have one in my gas container, any fuel being pumped into a plane first goes thru the filter. You can obtain such a clunk at most any small engine shop, there are several fuel line sizes so you might have to try several. cost $5.00 at most.
Get a good one, there several that are screens and I think they would pass small particles into the tank? About all chainsaws and weedeaters use these in some form or other.