AUTOMOTIVE ENGINE REPAIR
WELL WRITTEN EXAM REVISION
SUMMARY
A sticking valve
A vacuum gauge is connected to the intake manifold of an
engine. The needle fluctuates between (15 in. and 20 in.
Hg) at idle. This reading indicates an engine misfire or:
an incorrect valve face.
One of a cylinder heads valve tips is much higher than the
others. The most likely cause of this is:
discard & install new bolts
Once torque to yield bolts have been removed, the
recommended action is:
Stuck closed oil pressure relief valve.
What is the most likely cause of a ballooned oil filter?
a Dial indicator
The best tool for checking crankshaft end-play is a:
Electrolysis.
A vehicles cooling system is loosing coolant. There is
major corrosion around the aluminum water pump. Which
of these are the most likely cause:
cylinder head gasket.
A technician installs a radiator pressure tester on the
radiator of a cold engine. After starting the engine the
pressure quickly rises to 18 psi. The primary cause is:
engine oil seals to leak
, The PCV system on an engine allows the blow-by gases
from the crankcase to flow into the intake manifold for re-
combustion. However: a stuck closed PCV valve could
cause:
incorrect valve timing.
An OHC engine has recently had the cylinder head
replaced. The engine runs rough and stumbles. This may
be caused by:
A Leaking Head Gasket
A vehicle has heavy white smoke emitting from its tailpipe
at all engine speeds. The cause of this problem is:
a worn valve seat.
A worn valve spring may float at high RPM's. Valve float
can also result in:
a Leaking Valve Seal
A vehicle briefly blows bluish/gray smoke from the tailpipe
only when first started in the morning. The most likely
cause of this condition is:
straightedge.
Engine main bearing insert has a hole that must align with
the matching bores oil supply hole. Crankshaft bore
alignment can be checked with a feeler gauge and a:
a faulty head gasket
A cylinder power balance test is being performed on a
vehicle with sequential fuel injection. Two adjacent
cylinders are under performing. This could be due to
leaking secondary insulation. Another cause could be due
to:
excessive valve train noise.
Insufficient hydraulic lifter preload can cause:
pistons.
WELL WRITTEN EXAM REVISION
SUMMARY
A sticking valve
A vacuum gauge is connected to the intake manifold of an
engine. The needle fluctuates between (15 in. and 20 in.
Hg) at idle. This reading indicates an engine misfire or:
an incorrect valve face.
One of a cylinder heads valve tips is much higher than the
others. The most likely cause of this is:
discard & install new bolts
Once torque to yield bolts have been removed, the
recommended action is:
Stuck closed oil pressure relief valve.
What is the most likely cause of a ballooned oil filter?
a Dial indicator
The best tool for checking crankshaft end-play is a:
Electrolysis.
A vehicles cooling system is loosing coolant. There is
major corrosion around the aluminum water pump. Which
of these are the most likely cause:
cylinder head gasket.
A technician installs a radiator pressure tester on the
radiator of a cold engine. After starting the engine the
pressure quickly rises to 18 psi. The primary cause is:
engine oil seals to leak
, The PCV system on an engine allows the blow-by gases
from the crankcase to flow into the intake manifold for re-
combustion. However: a stuck closed PCV valve could
cause:
incorrect valve timing.
An OHC engine has recently had the cylinder head
replaced. The engine runs rough and stumbles. This may
be caused by:
A Leaking Head Gasket
A vehicle has heavy white smoke emitting from its tailpipe
at all engine speeds. The cause of this problem is:
a worn valve seat.
A worn valve spring may float at high RPM's. Valve float
can also result in:
a Leaking Valve Seal
A vehicle briefly blows bluish/gray smoke from the tailpipe
only when first started in the morning. The most likely
cause of this condition is:
straightedge.
Engine main bearing insert has a hole that must align with
the matching bores oil supply hole. Crankshaft bore
alignment can be checked with a feeler gauge and a:
a faulty head gasket
A cylinder power balance test is being performed on a
vehicle with sequential fuel injection. Two adjacent
cylinders are under performing. This could be due to
leaking secondary insulation. Another cause could be due
to:
excessive valve train noise.
Insufficient hydraulic lifter preload can cause:
pistons.
