[DML] CPR Testing
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[DML] CPR Testing



I am trying to test my CPR and have the CIS pressure tester.  With
the 
engine off at 80 degrees F, I get a system pressure reading of 72psi 
and a control pressure of only 30psi.  According to the graph in the 
manual it seems like the control pressure should be between 35 and 40.

Is this adjustable? The Bosch Fuel Injection book 
by Watson says it is caused by a defective CPR. Can it be fixed?

Could I be doing something wrong in my measurement technique?  It
seems 
rather simple. Engine off, gauge attached,  RPM relay jumpered.
(The technical information manual says to disconnect the intake 
manifold vacuum hoses but with the engine off I can't see how this 
could affect it...and it does not.)

What would a low control pressure when cold cause?  Excessivel rich 
mixture, correct?

Any thought and ideas are welcome.

D² & 6530
Dave Delman






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