Re: Proper fuel flow

Posted by HH56 On 2016/7/2 8:45:56

Flow specs for the pump was not provided for all years but for those years Packard did provide a number it was 1 pint delivered in 45 seconds with engine at idle speed.

Some have changed the original gas cap and installed a non vented cap which causes an issue with flow. Packards need the vented type. The short rubber hose making the connection between the metal gas line on frame to the pump is another source of issues. Old hoses can harden and restrict flow and the use of ethanol gas with old rubber components in the hose and pump is another frequent source of problems.

If you have the original ceramic type filter, the element can look clean and air can blow thru but in some cases varnish has coated the internal passages enough that fuel can barely trickle thru.