Fault Tracing; When The Engine Stalls - Volvo 164 Owner's Manual

WHEN THE ENGINE STALLS

OR WILL NOT START
The information given below is only intend-
ed to serve as a guide in localizing and
temporarily correcting minor faults. After
having carried out any such measures,
have them checked and adjusted by an ex-
perienced mechanic.
The engine does not start although starter
motor turns it over at normal speed
1. Check to make sure there is fuel in the
tank.
2. (B 30 A) If the engine is hot, start the
engine with the accelerator pedal fully
depressed.
3. (B30 E) Check to make sure the fuel
pump is functioning properly. This is
done by turning the ignition key to driv-
i ng position. This will run the pump for
1
1 to 1 seconds. If the pump does not
/2
function, check to make sure that the
pump fuse is not blown.
4. (B30 E) Attn. Do not touch the accelera-
tor pedal if the engine is cold.
I f the engine is hot, start it with the ac-
celerator pedal depressed
Avoid repeated short attempts at start-
i ng. Instead, let the starter motor run a
little longer (max. 15-20 seconds) at
each try.
5. With damp weather, when flashover is
possible, wipe the spark plug isolators
clean. Release the distributor cap and
wipe it dry.
Check to make sure that the ignition
l eads are properly fitted in the distrib-
utor head and ignition coil.
6. (B 30 A) Check to make sure that the
fuel pipe connections to pump and car-
buretor do not leak and that fuel reach-
es the carburetor.
7. (B30 E) Check to make sure that all
contacts for sensors and injectors are
properly fitted.
8. If the engine turns over without start-
i ng, there may be too much fuel in the
cylinders, with damp plugs as a result.
Screw out the plugs and wipe them dry.
Check the electrode gap.
If the engine still does not start
1. Remove the ignition lead from each plug
i n turn. Hold the end of the lead about
1/4" from the cylinder block while turn-
i ng round the engine with the ignition
switched on. If there is a strong, spark,
the fault is probably in the spark plugs,
so these should be changed.
2. If only a weak spark is obtained or none
at all, check to see whether the ignition
l eads are properly inserted in the distri-
butor and ignition coil.
3. Remove the distributor cap, check and
halfway. clean all contact surfaces. Check that
the contact
breakers close properly
when the engine is turned over. If the
contact breaker arm shaft binds, oil it
very sparingly.

FAULT TRACING

If the engine misfires, the reason can be:
1. That one of the ignition leads has loos-
ened in the distributor cover or from the
spark plug.
2. That one or more of the spark plugs is
coated with soot or oiled up, in which
case the plug concerned should be
cleaned or changed and the spark plug
gap adjusted.
3. That the distributor cap and rotor arm
are cracked or damaged.
4. That one of the ignition leads is in poor
condition.
5. That the ignition points gap in the distri-
butor is insufficient or non-existent.
6. That the ignition points are badly burn-
ed.
7. Fault in fuel systems electronic unit
(B 30 E). This must be checked by a
workshop.
How to start your car on a downgrade
Switch on the ignition, pull out the choke
i f required, engage 3rd gear or even 4th
and let the car roll downwards with the
clutch pedal depressed. When the speed
i s up to 15-20 kmph (9-12 mph) and
not before, release the clutch pedal slowly.
Being towed: Secure the towline to the
towing loop. The car is towed at an even
speed in 2nd gear. Try starting as sug-
gested in the previous paragraph.
Warning! Do not attempt to start a car with
automatic transmission by rolling it down-
hill or towing it. See recommendations on
page 24.
63