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 are combustion gases that escape past the piston rings into the crankcase. If not removed, these gases can cause pressure to build up in the crankcase. Hydrocarbons being released to the atmosphere is more related to emissions systems (not directly crankcase blowby non - removal). The EGR (Exhaust Gas Recirculation) system is not directly affected by crankcase blowby non - removal. Air intake to the combustion chamber is mainly regulated by the intake manifold and throttle body, not by crankcase blowby.

Answer:

a. Pressure build up can occur