Page 1 of 1
fuel pump pressure for later cars?
Posted: Fri Apr 24, 2009 5:11 pm
by Ren
Has anyone looked into fuel pump pressure for later 356/912s?
My books and people on registry say different things.
My car feels like it has fuel starvation with pump set to 3psi.
Posted: Fri Apr 24, 2009 10:07 pm
by Dakota
Hi Ren
I would have thought three is fine as two and a half is kind of normal , but in the past I have had issues with siting the pump , some pumps are happier pushing rather than pulling so to speak and if supplied the instructions should be followed and normally the pump must not be higher than the carbs , my 356 has a facet silver top down by the gearbox and a Malpassi filter king on the bulkhead and sometimes that felt like it was starving out and it runs Solex carbs on a nine one two motor, Bill.
Pumps
Posted: Mon Apr 27, 2009 12:11 pm
by Mike Smith
Bill,
You are correct - ALL pumps should push
Keep the suction length to a mininum - it is a basic principal in pumpimg whatever the medium or application
It does help considerably in our cars that we have a flooded suction
fuel pump ressure
Posted: Wed Apr 29, 2009 5:23 pm
by Ren
I found the problem it was a blocked idle jet that looks to be the wrong size.
I set pressure to 3.3psi as my books say between 3 -3.5psi.