Quote:
Originally Posted by Schulisco
Bosch&Porsche recommend in the CIS workshop manual on adjusting the CIS / CO only putting the allen key in for adjustment and directly removing it again because it's weight heavily affects the mixture!
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Well, yes? The mechanic was sloppy.
Quote:
Originally Posted by Schulisco
Concerning the harder cold start - if the WUR is in spec and fits correctly to the car (check part no.!) I would check first and foremost for vacuum leaks with a smoke generator!
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Smoke tested, no leaks.
Quote:
Originally Posted by Schulisco
If leaks have found and tightened check the sensor plate height as Porsche specified, in this relation also check mixture and idle afterwards.
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All good.
Quote:
Originally Posted by Schulisco
If everything is tight and correct I would continue with checks of cold start valve & thermo time switch
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Both checked and working as expected.
Quote:
Originally Posted by Schulisco
If car sits and both FA & check valve are not tight any more, the fuel pump needs much more time to (re-)pressurize the system on cold start.
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Brand new fuel pump with check valve, brand new FA.
Next step is putting that helper spring in the fuel head.