Alfa Romeo Forums banner

1 - 2 of 2 Posts

·
Registered
Joined
·
147 Posts
Discussion Starter #1
I now have the interior mostly in my car (still waiting for the door panels) so I took the car down to emissions testing today. Long story short, it failed! HC is OK 175 PPM (220 standard) but CO% was off/high - 1.55 (1.20 standard).
The Spica is set via the instructions in the Wes Ingram book (2500 rpm method) and I even retarded the ignition a bit to be sure of a "pass" (could that account for the high CO?)! The car idles at about 750 and runs well with good throttle response, (new) plugs are a dark brown across the board. Could this be a Spica pump timing issue? I thought it was 180 out and "corrected" it but now I am wondering!?
Should I simply screw in the solenoid to lean things out? Any thoughts from the Spica gurus appreciated!

TIA and Cheers!
Dave G.
 

·
Trained (ex)Professional, , 1953-2018 RIP,
Joined
·
16,232 Posts
...and I even retarded the ignition a bit to be sure of a "pass" (could that account for the high CO?)!
Yes. With everything else being equal, retarding the ignition timing can increase the CO. Advancing the timing can decrease CO.
 
1 - 2 of 2 Posts
Top