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  #1  
Old 07-05-2005, 06:21 PM
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1973/450sl trigger points

What are the sypthoms of trigger points that have gone bad. At what intervals are they cleaned or replaced? thanks

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Old 07-06-2005, 01:04 AM
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which trigger points?

Which points are you referring to? There's a set for ignition, as well as for the fuel injection system....
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Old 07-06-2005, 03:30 AM
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Prior to replacing the injection trigger points in my '73 350SLC the engine (3.5 M116 with D-Jetronic) would suffer intermittent misfire at low speeds, especially after a long journey at higher speeds. The misfire was injection related (use something long like a screwdriver as a stethoscope to listen to each injector) with pairs of injectors intermittently missing. Cleaning the trigger points would temporarily cure the problem. The permanent fix was a new set of trigger points (at great expense). That was years ago and I have not had cause to touch them since.
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Old 07-06-2005, 06:24 PM
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1973/450sl trigger points

I am referring to the trigger points in the lower distributor tray. Thanks for your responses.


Last edited by zeggate; 07-06-2005 at 06:26 PM. Reason: clarification
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