Fuel pressure specifications

[safe]

Hi
I´m having some starting problems with my car disussed in another thread .

I´m looking for fuel pressure (system and control both warm and cold) specificatons if someone have them for a CIS -77.

[Jim Sims]

CIS Fuel Test Pressure Question '77 2.7

[Rod.911S]

Originally posted by safe
Hi
I´m having some starting problems with my car disussed in another thread .

I´m looking for fuel pressure (system and control both warm and cold) specificatons if someone have them for a CIS -77.

Magnus,
In case you still need this (NB, these are for a 1977 USA model 911S:
CIS System Pressure: 4.5-5.0 bar

CIS Control Pressure (at idle speed):
warm-up regulator controlled: 3.6 +-20 bar
only fuel pump run: 2.9 +-20 bar

These are from the 1977 Porsche Service Information manual. Hope this helps.

[safe]

Originally posted by Rod.911S
CIS Control Pressure (at idle speed):
warm-up regulator controlled: 3.6 +-20 bar
only fuel pump run: 2.9 +-20 bar

These are from the 1977 Porsche Service Information manual. Hope this helps.

Are these values with the WUR connected (electrical) and warm engine?

[Rod.911S]

Sorry, but that is all the information the sheet has.