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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:CorrectIncorrect
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?CorrectIncorrect
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?CorrectIncorrect
A customer comes in complaining of white smoke bellowing from the exhaust. You should start by checking which system for low fluid levels?CorrectIncorrect
Which components inside the valve train are most likely to create a significant amount of excess engine noise?CorrectIncorrect
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 explain this?CorrectIncorrect
Which of the following is the best diagnostic procedure for determining if you have a faulty fuel injector without having manufacture electrical specifications?CorrectIncorrect
If you hear a flapping sound near the front of an engine, what is a likely cause?CorrectIncorrect
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?CorrectIncorrect
The cylinder head surface has been machined. What needs to be done to the valve train?CorrectIncorrect
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?CorrectIncorrect
Technician A states that the voltage required maintaining spark is called the spark line and duration of this spark line is based on the total primary circuit resistance and coil voltage.
Technician B claims that problems with the burning show up within the spark line.CorrectIncorrect
Technician A claims that old antifreeze can cause corrosion build-up in the cooling system. Technician B states that some OEM recommend coolant be changed at their specified intervals.
Who is correct?CorrectIncorrect
You hear a thumping or knock at the side of an engine block. It gets louder as the engine heats up by goes away when the affected cylinder shorts out. What might be the cause?CorrectIncorrect
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?CorrectIncorrect
Technician A and B are both performing a power balance test on an engine. Technician A says you must note engine RPM before and during each cylinder test.
Technician B wants to record the RPM drop of each cylinder. Who is correct?CorrectIncorrect
You are performing a cylinder compression test and receive a zero compression reading plus excessive engine blowby. This indicates which of the following?CorrectIncorrect
When attempting to diagnose coolant consumption, your first step must be to do what?CorrectIncorrect
Which of these points isn’t a common coolant leakage spot?CorrectIncorrect
A faulty main bearing _____.CorrectIncorrect