1987 Volvo 760
No spark<./td>
If there is no spark, check that the high tension lead
from the coil to the distributor cap is connected and
that the wires to the distributor and coil are connected.
Spark plugs, high tension leads or distributor
cap wet or defective.
Clean the parts with a dry cloth or spray with a
moisture remover. Replace defective or worn parts.
If no fault is found following the above steps, contact
your Volvo dealer.
Condition: Excessive fuel consumption
Possible cause
Correction
Fuel lines leaking.
Check
tightness.
Spark plugs worn Replace plugs.
pg. 86 Service diagnosis
Condition: Erratic idle (misfiring)
Possible cause
Correction
Intake system leaking.
Check vacuum hose connections at manifold and
auxiliary air valve.
Spark plugs, high tension leads or distributor cap
worn (detective).
Clean distributor cap and leads, check the cap for
cracks. Replace defective or worn parts.
Worn spark plugs.
Remove. Clean or replace spark plugs.
Condition: Engine stalls at irregular intervals
Possible cause
Correction
Defective wires.
Check wire terminals at: fuel pump, fuse No. 1 and 11, coil, distributor, ignition
switch and relays.
Intake system leaking. Check vacuum hose connections at manifold and auxiliary air valve.
Fuel filter clogged.
Clean fuel tank filter and replace line fuel filter.
Condition: Misfiring at highway driving speed
file:///K|/ownersdocs/1987/1987_760/87760_05.htm (18 of 20)12/30/2006 7:55:34 AM
