GTI L4-2.0L Turbo (CBFA) (2008)
-
Compare quantity of fuel delivered with specification.
*) Minimum delivery rate cu.cm /30 s
**) Voltage at fuel pump with engine off and pump running (approximately 2 Volts less than battery voltage).
Example:
During test, a voltage of 12.5 volts is measured at the battery. Since the voltage at the pump is approximately 2 Volts less than battery voltage, there is a
minimum delivery rate of approximately 580 cu.cm /30 s.
If the minimum delivery rate is not attained:
-
Check fuel lines for possible restrictions (kinks) or blockages.
If no malfunction can be found:
CAUTION: Fuel supply line is under pressure. Wear protective goggles and protective clothing to prevent injuries and contact with skin.
Before removing from hose connection wrap a cloth around the connection. Then release pressure by carefully pulling hose off connection.
-
Disconnect supply hose - 1 - from fuel filter input.
-
Connect pressure gauge V.A.G 1318 with adapter V.A.G 1318/17 to hose.
-
Resume testing delivery quantity.
If minimum delivery rate is now obtained:
-
Replace fuel filter.
If minimum delivery rate is again not obtained:
-
Remove fuel delivery unit and check filter strainer for dirt.
Only when up to now no malfunction has been detected:
-
Replace fuel delivery unit.
If the delivery rate has been attained but nevertheless you suspect a fuel supply system malfunction (e.g. intermittent failure of fuel supply system):
-
Check Fuel Pump (FP) current draw. See: Testing and Inspection/Current Draw, Checking