technical data AUDI A4 1999 B5 / 1.G APB Engine Motronic Multiport Fuel Injection System Servising Workshop Manual
Page 6 of 90
24-4
Technical data
Engine identification
APB
Idling speed
Not adjustable - controlled by Idle Air Control (IAT)
750 - 850 RPM
Engine speed (RPM) limitation
via fuel injector shut-off approx: 6800 RPM
Fuel pressure at idle speed Vacuum hose
connected
approx. 3.5 bar positive pressure
Vacuum hose
disconnected
approx. 4.0 bar positive pressure
Residual pressure after 10 minutes at least 2.5 bar positive pressure
Fuel Injectors Spray pattern Multi-hole nozzle (same on all injectors)
Injection qty. (30 secs.) 135 - 165 ml
Resistance
(room temperature)
1)
13.5 - 15.5
1) When the engine is at operating temperature the resistance is increased by approx. 4 - 6 .
Pa
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port Fuel In
jection
(MFI
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