Cam position sensing w/o a cam sensor

[Carter Shore]

Some cars have an eccentric lobe on the cam for
driving the mechanical fuel pump. 

If you are fortunate enough to have this, it's easy to
get a cam position signal, since there will be an
access point where the fuel pump was mounted. 

You can use a hall sensor with a bias magnet, all you
need is a squarish wave. Mount on an adjustable rod
attached to a pump blanking plate.

Or remove the pump guts, and sense the position of the
arm as it follows the eccentric lobe with an opto
sensor. This removes the sensor from the heat and oil
inside the motor.

Even some newer cars with batch FI still have the
eccentric on the cam, so check for it.

Carter Shore

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