Maserati Manual MK1
Lucas World Service News WSN604 Export
Mistral + 3500 GT Owner's Manual

TEST 
A.10. Pressure and current while cranking with starter.

METHOD
ALLOW starter to crank engine. OBSERVE gauge and ammeter readings.

ACTION
a) Gauge and ammeter readings remain correct. Remove the apparatus and restore original connections, proceed to A.11.

b) Gauge and ammeter readings fall to either: (i) around 80p.s.i. and 3 amps. (ii) both zero end pump stops. In either case the battery
    should be recharged.

TEST
A.11. Faulty Metering Distributor

METHOD
Switch OFF the ignition. DISCONNECT one of the injector pipes from its banjo on the Metering Distributor, after ensuring that the
exterior of the unit is clean. By removing the banjo bolt from the unit, a view is obtained of the rotor. If this is seen to remain
stationary when the engine is turned, loss of rotor drive is indicated. To determine whether the failure is of the drive to the metering unit,
or of the coupling between the drive shaft and the rotor, remove the top cover of the Metering Distributor oil pump, again after ensuring
that the exterior is clean. Rotate the engine and observe whether the oil pump piston is moving by bolding the fingers across the spring on
the oil pump piston.

ACTION
a) If the oil pump is operating, then the coupling between the drive shaft and rotor will have sheared. The complete unit should be
   removed, after disconnecting all oil, fuel and vacuum  pipes from the complete Metering/Control Unit, taking care to fit blanks as
   pipes are removed. A new Metering/Control Unit should then be fitted.

b) If the oil pump piston is found NOT to move, then failure is in the engine drive to the unit. Proceed as (a) to remove the complete
    Metering/ Control Unit from the engine, and check for rotation of the drive from the engine timing case

Page 9
Click here to go to page 10

Click here to go to the table of contents