Auto Mechanic-ASE A9 Diesel Practice
Test Questions And Answers With
Verified Solutions Already Passed!!!
Which diagnostic tool connects to the Data Link Connector and allows the
technician to read light duty diesel engine diagnostic trouble codes? -
ANSWER✔✔Diagnostic Scan Tool & DMM (Digital Multimeter)
An orange colored liquid is found under the front of the engine, which of the
following fluids is leaking? - ANSWER✔✔Coolant
Two technicians are discussing engine valve seals. Technician A says to apply a
light coat of engine oil to new oil seals and push them in. Technician B says you
can install the intake oil seal into the exhaust side or install the exhaust oil seal into
the intake side because they are interchangeable. Who is right? - ANSWER✔✔A
only
Valve adjustment is necessary following the replacement of a: BLANK -
ANSWER✔✔Cylinder head
After cleaning a diesel block and crankshaft, what chemical should they be sprayed
with? - ANSWER✔✔Rust inhibitor
When measuring a cylinder for taper wear, which of the following is the MOST
likely place for wear? - ANSWER✔✔Top of cylinder
Technician A says a weak solution of antifreeze may cause corrosion build-up in
the cooling system. Technician B says engine coolants and rust inhibitors last the
lifetime of the diesel engine. Who is right? - ANSWER✔✔A only
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