Question

what will happen if blowby gases are not removed from the crankcase of a vehicle?
a. pressure build up can occur
b. hydrocarbons can be released to the atmosphere
c. damage to the egr system can occur
d. air intake to the combustion chamber can be effected

Explanation:

Blowby gases in the crankcase are unburned fuel - air mixtures that have leaked past the piston rings. If not removed, they can cause pressure to build up in the crankcase. Hydrocarbons being released to the atmosphere is not the most direct consequence. The EGR (Exhaust Gas Recirculation) system is not directly affected by un - removed blowby gases in the crankcase. Air intake to the combustion chamber is also not the most immediate impact.

Answer:

A. Pressure build up can occur