Spark Delay (Sd) System - Volkswagen Taro 1989 Workshop Manual

S P A R K D E L A Y ( S D ) S Y S T E M
(1)
Dlstrtbutor Diaphragm
(2)
Vacuum Transmlning Valve
1
To
&KO
NOx and HC e m m n s , this s y s t m delays the m u ~ m advance for a given llme and lowers the
rnaxlmurn combustion temoerature
1
Posit~oned below
I
-
I I
Not advanced
I
Vacuum lgnltlon Timlng Vacuum at
Advance Port
Check Vacuum Transmlnmg Valve
advance parr
Posltloned above
advance port
Delayed
Normal
Increased CLOSED
Decreased
I
OPEN