Datsun 1000 - Page 26

2Q
Engine
d
ault
in coil
or
apacitor
e
Valve clearance out
of
adjustment
t
Air
leak
at inlet manifold
or carburettor
flange
g
Carbon
tracking
or cracked distributor
cap
h
Weak or fa
lty battery
and
or
corroded terminals
i
Carburettor
flooding
or incorrect float level
setting
0
F au
ty
coil or
capaci
tor
k
Excessive
wear
in
distributor shaft and bushes or
contact
breaker earn
I
Burned
warped
or
pitted valves
4
Engine
missing
at
idling speed
Possible cause
a
Dirty
defectiJe
or
incorrectly
set
spark plugs
b
Burned
or
pitted
distributor contact
points
c Loose or broken low
or
high
tension
wires
in
ignition system
d
Carburettor
idling
mixture out of
adjustment
e
Burned or cracked distributor rotor
t
Moisture on
tigh
tension wires
spark
plug
or
distribut 1r
cap
S
Engine
mis
on accelerati n
Possible cause
a Distributor
points dirty
or
incorrectly adjusted
b
Spark pluilfs
dirty
faulty
or
gap
set too
wide
c
Dirt
or
water in
carburettor
d Carburettor accelerator
pump discharge jet
blocked or
pump
defective
e
Coil
or
capacjtor
faulty
t Incorrect
ignition timing
g
Burned
warped
or
pitted
valves
6
Engine
misses at
high
speed
Possible cause
a Distributor
points
dirty
or
incorrectly
adjusted
b
Spark plug
s
dirty faulty
or
gap
set
too wide
c Dirt or water in
carburettor
d Burned or
cracked distributor
rotor
e
Faulty
coil or
capacitor
t Dirt
in cluburettor
power
jet
g
Incorrect
ignition timing
h Excessive wear
in
distributor
shaft or carn
7
Engine
lacks
power
Possib
e
cause
a
Dirty
or incorrectly
set
spark
ptugs
b Dirt
or water in carburettor and fuel
system
c
Incorrect
ignition timing
d Incorrect carburettor float
level
e
Faulty
fuel
pump
I
Incorrect valve clearance
g Faulty
distributor
automatic
advance
h
Restricted
muffler or tail
pipe
J
Test and
1
lleW
faulty
cOlllpollelll
Adjust
valve clearance
Tighten
securing
bolts
or renew
gaskets
Clean
or
renew
cap
Recharge
or
renew
battery
and or clean
or
renew
terminals
Check needle valve or reset
float level
Test and renew
faulty component
eriew
worn
components
C
rry
o
t
top
overhaul on
engine
Remedy
Clean or renew and set
spark plugs
Clean
or renew and
adjust
contacts
Tighten
or
renew defective
components
Adjust idling
mixture
screw
Renew
faulty component
Dry
out
high
tension
system
and
cap
Remedy
Clean
and
readjust points
Clean or
renew and reset
faulty plug
s
Clean and blowout
carburettor and fuel
pump
filter
Clean
out
carburettor
Renew
defective
component
Check and reset
ignition timing
Carty
out
top
overhaul
on
engine
Remedv
Clean
and
readjust points
Clean
or renew and
reset
faulty plug
s
Clean
out carburettor
and fuel
pump
fil ter
Renew
faulty component
Renew
faulty
component
Clean and blowout
carburettor
C teck
and
reset
ignition timing
Renew
f
ulty
components
Remedy
Clean and
reset
gap
to
specific
tions
Drain and clean out fuel
system
and carburettor
Check and reset
ignition timing
Checkand reset float level
Check
and
overhaul fuel
pump
Check and
readjust
valve clearance
Check and
rectify
or
renew
Check
a 1d
Iean
as
ne
essarv
26
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