Re: Side Tracked by a '51 Packard

Posted by HH56 On 2010/11/6 19:02:57

Believe the hydraulic lifters were an option. One of the service counselors alludes to that when reminding service personnel to stamp an H on replacement blocks so equipped.

Interesting on the electric fuel pump. Don't think I have ever heard of one starving--usually just the opposite so the flooding is very believable. I think the usual cause is too high an output pressure which the floats can't control.

The original mechanical pump specs are 4-5psi and 1 pint in 45 seconds. Unless the electric pump is worn out, would expect all could do that so wonder why the starving. Any chance there is a hose collapsing with suction or a too small or clogged filter in the installation. If it still has the ceramic filter near the carb, that would be an excellent place to look. If they varnish up from gas evaporating while sitting, you can blow air thru but it can't pass required flow with engine much above an idle. Been there, had that.

If the electric is plumbed thru the mechanical pump, there is a screen in the bottom chamber that might have clogged. There have also been reports of floating debris in gas tank that gets sucked near the outlet pipe pickup and throttles the flow.