Skoda OCTAVIA MK1 Service Manual page 199

– Measure fuel pressure.
Specified value: approx. 2.5 MPa (0.25 bar)
overpressure.
Detach vacuum hose from fuel pressure
–
regulator. The fuel pressure must rise to
approx. 3 bar (3 MPa) overpressure.
– Switch off ignition.
Test for leaks and holding pressure while
observing the pressure drop on the
–
manometer. An overpressure of at least
1.5 bar (0.15 MPa) must be indicated on
the manometer after 10 minutes.
The pressure drops below 1.5 bar (0.15
MPa):
– Start engine and run in idle.
After the pressure has been built up,
switch ignition off. At the same time close
–
the shut-off cock at the pressure
measuring device -V.A.G 1318- (lever at
right angles to direction of flow).
– Observe pressure drop at gauge.
If the pressure again drops:
Checking the non-return valve on the
–
fuel pump.
If the pressure does not drop:
199