Ya know, it's a little more trouble, but over here in the USA, we pull the plugs and take a look at the color they're burning at. Chocolate brown is ideal, black is rich and grey is lean.
Considering the cost of an engine, we just go ahead and uncrew a plug and have a look.
That's voodoo, just wiping the exhaust tips with your finger and adjusting the carb(s) like that!
May as well adjust the carbs by how much smoke is coming from the exhaust pipes under full acceleration, too much smoke, rich, no smoke, lean.
Pull a plug, it doesn't take that much time!
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.