Automobile(s): '80 Fleetwood Coupe, 1994 and 1995 Mercedes 140 Coupe
Re: Gas Engine Tune Up Specs
According to Chilton 1984 Parts and Labor Guide:
'79 425 W carb = 23 btdc checked at 1400 RPM. (not the same as 1978)
Fuel injected = 18 btdc which IS the same as 1978.
Some of these books AND the specs posted here are incorrect. They show figures of how many degrees before top dead center the intake valve opens on engines of different years. When you look up the internal engine items such as camshafts, timing gears, etc. they are all the same exact part numbers. Something is wrong.