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Author Topic: calibrating injection pump 230sl - year 1966  (Read 3081 times)

Berend

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calibrating injection pump 230sl - year 1966
« on: March 31, 2010, 13:39:47 »
 My CO level is too high, and could not pass the inspection. Can somebody advice me how to calibrate the Bosch injection pump.Or can somebody supply me with advice, a manual, or procedure.
thx. Berend
 
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ctaylor738

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  • USA, VA, Falls Church
  • Posts: 1174
Re: calibrating injection pump 230sl - year 1966
« Reply #1 on: March 31, 2010, 22:17:33 »
A Search will bring up a wealth of information.  Try "warm running device" which is the first thing to check.
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Chuck Taylor
1963 230SL #00133
1970 280SL #13027 (restored and sold)
1966 230SL #15274 (sold)
1970 280SL #14076 (sold)
Falls Church VA

jeffc280sl

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Re: calibrating injection pump 230sl - year 1966
« Reply #2 on: March 31, 2010, 22:37:33 »
Berend,

Is the test performed at idle or a rolling dynomometer type device at all rpm levels?  Do you have any test data?  Idle co can be easily adjusted via the thumb screw on the rear of the pump.  Lots of posts about this.

If you are out of spec at all rpm ranges you may be able to solve your problem by removing a shim under the barometric compensator.  Removing a shim will make your fuel mixture leaner.  Same thing would happen if you increased altitude.
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