Porsche 928 Workshop Manual page 399

928 Fuel Management - LH - Jetronic/Cont.
24
SPECIFICATIONS FOR TESTING AND ADJUSTING LH-JETRONIC TYPE 928 S
85 MODEL ONWARD (32-VALVE ENGINES)
ENGINE TYPE M28. 43/44/45/46
Test
Electric fuel pump
delivery
rate
l
Fuel pressure
(engine off)
fuel pump
bridged
Overpressure at
idle speed
Leak test
minimum pressure
after 20 minutes
Idle speed adjust-
ment
Idle speed in rpm
l/min
a
CO-content %
Specification
min. 1350 cm3/ 30 5
2.3 . . . . . . . ...2.7 bar
approx. 2 bar
1 bar
680 + 20
0.6 % + 0.2 %
Remark :s
l
Printed in Germany - XII, 1986 Specifications for Testing
24 - 201
and Adjusting