Maserati Manual MK1
Mistral + 3500 GT Owner's Manual
Irregular Motor
A) When all your first three cylinders or the last cylinders are working, the
problem can be checked by looking at the sixth
spark plugs on the side which is not working. If these are wet, or if by hand
you can feel a beat of the nylon tubing of the intake,
the causes of the problem may be as follows:
1) It may be an obstructed injector. In this case it is necessary to take apart
the three injectors and blow compressed air,
of at least four or five atmospheres.
2) An intake small piston on the inside of the small rotor is jammed (Figure
21M). You must take apart the distributor, remove the
small pistons and smooth both the cylinders and the small I pistons with very
fine sanding paper. You can complete this operation by
lightly oiling the surfaces with a very thin oil. You should have this done by a
professional garage, since it is a difficult and precise
operation.
B) A cylinder does not work especially when a car is not running at minimum. You
can see the two spark plugs are wet and with the
fuel pump running and the motor standing still,
1) You can hear a whistle and see a continuous spray of gas in the intake line.
Replace the two round rubber washers and cylindrical
rubber washers which seal the connecting bolt on the distributor (figure 34 B
and C), or at least check if they keep a good seal.
2) You cannot see a continuous input of gasoline in the line. Replace the
injector or at least, if possible, clean it with compressed air.
After this has been done with the motor running, you must feel the intake pulse
with your hand on the nylon line.
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