ASE A1

Technician A claims that the closed coil end of the valve spring should go along the cylinder head. Technician B states that the valve springs use shims to control the free spring height. Who is correct?

Technician A was correct

Which components inside the valve train are most likely to create a significant amount of excess engine noise?

Worn or dirty rocker arms

A faulty main bearing _____.

makes a thumping noise that's noticeable when the engine first starts.

You are performing a cylinder compression test and receive a zero compression reading plus excessive engine blowby. This indicates which of the following?

A hole in a piston

A technician performs an idle vacuum test. The test results from the 2001 Sedan are at 11 in. Hg. What should the technician check next?

Check for proper timing

A customer comes in complaining of white smoke bellowing from the exhaust. You should start by checking which system for low fluid levels?

Cooling System

A customer comes in complaining their engine is lacking power. It was a sudden change. Upon inspection, the technician notices that the engine coolant is low, and that there is a white smoke coming from the exhaust. Which of the following would best expla

Cracked cylinder wall

Which of the following is the best diagnostic procedure for determining if you have a faulty fuel injector without having manufacture electrical specifications?

Determine if all injectors have the same electrical resistance

Which of these points isn't a common coolant leakage spot?

Faulty gasket

The cylinder head surface has been machined. What needs to be done to the valve train?

Grind the valve stems

A customer complains of a rattling noise coming from the engine. Technician A determines that it is coming from the drive belt/serpentine belt system. The next step is to:

Inspect the pulleys for signs of excess play or bearing noise

When performing an engine compression test, you are looking for an air leak within the cylinder. With this test, you will find air leaks in all of the following except which?

PCV valve

When attempting to diagnose coolant consumption, your first step must be to do what?

Perform a cooling system pressure test

You need to disable the fuel injection and ignition system before an engine compression test for multiple reasons. Which one of these is the least important reason?

Prevents inaccurate readings

An engine begins making a knocking sound that changes with the RPM. When the cylinder is tested during a balance test, the noise disappears. What is the most likely cause?

Rod bearing

If you hear a flapping sound near the front of an engine, what is a likely cause?

Timing belt tension is too loose