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Disttibutor
Brcakerless ignition system
Checking vacuum advance
C o n n e c t a v a c u u m p u m p t o v a c u u m u n i t .
R u n e n g i n e a l i d l e s p e e d a n d r e c o r d i g n i t i o n a d v a n c e .
P u m p v a c u u m p u m p a n d c h e c k t h a t i g n i t i o n s e t t i n g
l f i g n i t i o n s e ( l n g d o e s n o t a d v a n c e c h e c k v a c u u m c o n '
F8
Check Bosch number on distribuior and turn to
appropriate graPh on Pages 16-20
Select pressure from graph and pump up vac'rurn
pump to this value. Record ignition setting. Subtract
basic ignition setting and check that value conforms to
graph-
Fl0
Check vacuum control unit for leakage
connect a vacuum pump and Increase vacuum to
67 kPa (500 mm Hs).
Pressure should not drop by more than 13.5 kPm (l00
mm Hg) during one minute.
c
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Example: Bosch number 0 237 002 038
F9
B21F 1979- (Excl. California and Japan)
Y o u s e l e c l d p e s s u r e o f 2 0 0 m m H g C r a n k s h a l d e '
g r e e s a l t h i s o r e s s u e
9 1 4 ' . B d s i c i g n i l r o r s e n i r g r s
t
I
1 0 . w h r c n m e a a s r h a l t 9 - 2 a ' s h o L d b e r e c o r d e d d t
!
I
I
{,
42
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