08-23-2018,
08-23-2018,
Not as bad as ive seen. Make sure the bowl oring isnt rolled or cut. Also the fittings into the davco are orb and they from age can harden and allow air ingestion. Might be worth looking into. Also a couple weeks ago i had one that had lots of air ingested and it was a cracked fuel pickup tube in the fuel tank. Before the repair the fuel level in the davco was very low with the engine running and after repair i couldnt tell where the level was. I assue it ran full like it should.
08-23-2018,
Mine has never bubbled like that at all.
08-23-2018,
Davco's troubleshooting guide says champagne sized bubbles are okay. But that's definitely excessive. It clearly looks like a suction leak.
http://www.davco.com/diagnostics.htm
http://www.davco.com/diagnostics.htm