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

FAULT E: DIFFICULTY IN STARTING A WARM ENGINE

 The probable cause of this is either leaking injector nozzles, or leaking non-return valves on the Metering Unit.

This will result in the injector pipe becoming unprimed, so that when a starting attempt is made the Metering Unit has initially to
prime the pipe before fuel can be injected into the manifold.
 

TEST
 E.1. Leaking Injector nozzle(s)

METHOD
With the ignition Switch ON, progressively press firmly with finger on the non-return valves in the outlet ports of the Metering Distributor,
during a starting attempt, and during the first few seconds of running. Feel for pulsations as injection takes place.

ACTION
a) If no pulsations occur at one or more non-return valves fit replacement injector nozzle(s) in the associated pipe line?.
    If poor hot starting is still experienced. Proceed to E.2.

TEST 
E.2 Leaking non-return valves

ACTION
a) Replacement banjo bolt(s) at which no pulsations occur, should be fitted to the Metering Distributor

N.B. It must be remembered that no improvement in starting will be shown by the first start, after carrying out any work which involves
        disturbing any part of an injector line. This is because the affected lines have to be given time in which to become primed with fuel.

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