Answers Already Passed
Technician B says that Part 'X' is used to correct installed spring height. Who is right? ✔✔B.
Technician B only
A compression test shows that one cylinder is too low. A leakage test on that cylinder shows that
there is excessive leakage. During the test, air could be heard coming from the tailpipe. Which of
the following could be the cause? ✔✔D. an exhaust valve not seating
Technician A says that main bearing oil clearance can be checked with Plastigage. Technician B
says that main bearing oil clearance can be checked with a dial bore gauge. Who is right? ✔✔C.
Both A and B
To raise the seat contact on the valve face shown above, which combination of stones should be
used? ✔✔A. 45 degree and 60 degree stones
A technician takes a compression reading on a 4-cylinder engine, and gets readings of 140, 135,
135,, and 40 psi. Then he preforms a wet compression test, and the readings are almost the same
as those in the first test. Technician A says that a burned valve could cause these readings.
, Technician B says that a broken piston ring could cause these readings. Who is right? ✔✔A.
Technician A only
An engine is being rebuilt and the crankshaft connecting rod journals have been ground
undersize. Specifications show that the original connecting rod journal size was 2.1228-in.
2.1236-in. If the journals now measure 2.1032-in., what size bearings should be used? ✔✔C.
0.020-in. undersize
Camshaft lift is defined as: ✔✔B. the height of the lobes on the camshaft
Technician A says that a burned valve could be the result of too little valve lash. Technician B
says excessive valve lash could cause very fast camshaft wear. Who is right? ✔✔C. Both A and
B
Technician A says that engine cylinders wear most at the top of the ring travel. Technician B
says that the difference in cylinder bore measurements taken parallel and perpendicular to the
crankshaft will indicate cylinder bore taper. Who is right? ✔✔A. Technician A only
A tapping noise can be heard coming from the upper part of an engine running at idle. Which of
the following could be the cause? ✔✔D. all of the above