The third and fourth cylinders of the VAZ-2110 engine are periodically denied

The 3rd and 4th cylinders in the VAZ-2110 may be rejected due to the following reasons:

-Defects in reciprocating group, valves.

-Electrical failure: lack of control signal with ECU, damage of wires, spark plugs, ignition module.

In addition, it is worth checking the idling of the air pump-one of the signs of which is excessive turnover.