Step 3 » GENERAL learning environment Category D (D, D1, Tb, Tv)

GENERAL Learning Environment Category D (D, D1, Tb, Tv)
Question 356 of 485

Misfires in the intake and exhaust manifolds occur because of:

A the cold engine;
B the clearance that is too small between rocker arms and valves;
C the engine that is too hot.

Explanation

Explanation text category D / driving test drpciv:
When the thermal clearance (between rocker arms and valves) is too small or nonexistent, the valves do not close completely and gas leaks appear, which lead to misfires (in the intake or at the exhaust). Therefore in the intake and exhaust manifolds, the misfires occur as a result of the clearance that is too small between rocker arms and valves.
Correct answer: B
 
Driving tests drpciv category D explained.

0 Comments Leave a comment

Leave a comment

To be able to leave a comment, you must be logged in and have activated the PREMIUM plan! Go to the login or account register page

Choose theme: Classic | Duo

© Copyright Școala Rutieră 2026. All rights reserved.