Possible ignition faults, their causes and methods of elimination (VAZ-21011)

Current does not flow through the breaker contacts:

– the breaker contacts are dirty, oxidized or burnt; increased gap between contacts

– clean the contacts and adjust the gap between them

- loose fastening or oxidized wire tips in the low voltage circuit, break in the wires or short circuit with ground

– check the wires and their connections; replace damaged wires

– the ignition switch is faulty (contacts "30/1" and "15" do not close)

- check, replace the faulty contact part of the ignition switch

– the capacitor is broken

- replace the capacitor

- break in the primary winding of the ignition coil

– replace the ignition coil

The breaker contacts do not open:

– the gap adjustment between the breaker contacts is broken

– adjust the gap between the contacts

– the textolite block or bushing of the breaker lever is badly worn out

– replace the contact group

– the bearing of the breaker moving plate has failed

– replace the bearing or distributor

No high voltage supplied to spark plugs:

- high voltage wire tips are loose in their sockets, have come off or are oxidized; the wires are heavily contaminated or their insulation is damaged

- check and restore connections, clean or replace wires

- wear or damage to the contact carbon, its sticking in the distributor cap

– check and, if necessary, replace the contact carbon

– current leakage through cracks or burnouts in the cover or rotor of the ignition distributor, through carbon deposits or moisture on the inner surface of the cover

- check, clean the cover from moisture and carbon deposits, replace the cover and rotor if they have cracks

- burnout of the resistor in the ignition distributor rotor

– replace the resistor

- the ignition coil is damaged

– replace the ignition coil

The spark plug electrodes are oily or the gap between them is not correct

Clean the spark plugs and adjust the gap between the electrodes

The spark plugs are damaged (crack in the insulator)

Replace the spark plugs with new ones

The order of connecting high-voltage wires to the terminals of the ignition distributor cap is violated

Connect the wires in the firing order 1-3-4-27. Check and adjust the ignition timing

Incorrect ignition timing

Check and adjust ignition timing

Incorrect ignition timing

Check and adjust ignition timing

Large gap between spark plug electrodes

Check and adjust the gap between the electrodes

Small gap between breaker contacts

Adjust the gap between the contacts

The spring of the breaker moving contact is weakened

Replace the contact group

Large gap between breaker contacts

Check and adjust the gap between the contacts

The springs of the ignition timing regulator weights in the ignition distributor have weakened

Replace the springs, check the operation of the centrifugal regulator on the stand

The wires in the ignition system are damaged, the wire fastening is loose or their tips are oxidized

Check the wires and their connections, replace damaged wires

The breaker contacts are dirty, oxidized, burnt or displaced

Clean the contacts and adjust the gap between them

Wear of electrodes or oiling of spark plugs, significant carbon deposits; cracks in the spark plug insulator

Check the spark plugs, adjust the gap between the electrodes, replace damaged spark plugs

Worn or damaged contact carbon in the distributor cap

Replace the contact carbon

Severe burning of the central contact of the ignition distributor rotor

Clean the center contact

Cracks, contamination or burnouts in the rotor or distributor cap

Check, replace rotor or cover

Decreased capacity of the capacitor or a break in it

Replace the capacitor

Excessive distributor shaft runout; increased wear of the roller bushing

Replace the ignition distributor

Incorrect ignition timing

Check and adjust ignition timing

Seizure of ignition timing regulator weights, weakening of weight springs

Check and replace damaged parts

Excessive wear of the breaker moving contact bushing

Check, replace the contact group