BenzWorld Junior Member
Date registered: Feb 2009
Vehicle: 1979 450 SLC - Black on Black - 71k miles
Location: South Orange County CA
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Air - Fuel Adjustment Screw Location ??
1979 450 SLC
Finding this screw has been driving me crazyyyyy!!! I searched this forum and found information stating that it was an allen screw located underneath the air filter housing, under a rubber cap of some sort.... no such luck...
I attached pictures of what I found...The only screw I could locate has a straight screw head and is right in front of the fuel distributor on the intake manifold.
The car is running way too rich, and I need to adjust the air-fuel ratio so I can test the exhaust for the CO level...and then hopefully get it to the right setting.
Anyone who knows where this screw is please reply....many thanks!!