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jwasbury jwasbury is offline
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Join Date: Jan 2008
Location: Weehawken, NJ
Posts: 3,307
No codes available from the CIS box paul...the dizzy does have a magnetic pickup and the famous green signal wire comes out the side of the dizzy body into the harness. This wire provides the signal to the CDI box which lives next to the fuse panel on the driver's side on the engine compartment. These are known to fail (insulation cracks open from years of heat cycling) and cause weird intermittent misfires.

The fact that you say it happens only on boost would worry me...lean misfire? The car has sat a lot for over 6 months...maybe an injector is gummed up. Try running some seafoam or techron?

The mixture adjustment screw can be a bear to engage...are you sure you were actually turning the adjuster? You have to press down on the spring loaded plunger pretty hard and its tricky to get it to properly connect to that adjuster screw somewhere in the bowels of the CIS airflow meter housing. Once its engaged, only slight turns will change the idle speed of the engine.
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Jacob
Current: 1983 911 GT4 Race Car / 1999 Spec Miata / 2000 MB SL500 / 1998 MB E300TD / 1998 BMW R1100RT / 2016 KTM Duke 690
Past: 2009 997 Turbo Cab / 1979 930
Old 07-27-2010, 05:27 AM
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