Excessive tapping noise can be heard from the top of an overhead cam engine. What would be a common fault that would cause this?
Excessive worn cambelt
Excessive valve shim clearance
Over tightened tappets
Leaking inlet manifold
Which one of the following tests would diagnose a badly seating inlet valve?
Cylinder leakage test
If a thermostat fails to open it would cause the engine to run at….
Its optimum temperature
Extremely higher temperatures
A cooler temperature
On a full flow lubrication system, what percentage of oil is filtered when the engine is warm and the filter is clean?
Why is it important to drain the engines coolant when replacing a heater matrix?
To allow the coolant to be recycled
It does not need to be drained
To prevent damage to the vehicle’s interior carpets
To prevent contamination of the engine’s oil
Which one of the following is the main reason for using electrically operated cooling fans?
The cost is cheaper
The engine is quieter
Increase the engines performance
Decreases the fuel efficiency
When referring to oils, what do the initials ‘EP’ stand for?
Which one of the following is a viscous unit filled with?
Main bearings on a light vehicle engine are normally?
Roller ball bearings
Taper roller bearings
Which one of the following would be used to check a cylinder head for straightness?
Which one of the following pieces of equipment would be used to check an oil pump for distortion?
When checking the operating temperature of an air conditioning system, where would the air temperature be measured?
Intake plenum chamber
Engine air intake
The engine oil pressure warning light will always illuminate if the…..
Oil pressure was low
Oil pressure was correct
Oil pressure was high
Oil level was low
Viscous cooling fans drives are commonly fitted with which one of the following?
Right hand thread
Left hand thread
Which of the following are three common types of heat transfer?
Convection, concentration & radiation
Conduction, convection & passive
Conduction, convection & radiation
Conduction, absorption & radiation
A rotating engine crankshaft with no valve movement would be caused by…..
A snapped cam belt
Damaged big end bearings
Oil pump failure
Incorrect valve clearance
Which one of the following does an expansion tank allow for?
The coolant to siphon off
The coolant to expand due to heat
The screen wash to contract
The antifreeze to contract due to the thermostat
Which one of the following is the formula for calculating cylinder capacity?
π x R2 x Height
π2 x R x Height
π x D2 x Height
π x R x Height2
Which one of the following would be an indication of the oil pressure being satisfactory on a running engine?
Engine management light on
Oil pressure light on
Oil pressure light off
Oil pressure gauge low
Which one of the following is used to transfer heat in a heater matrix?
On a four stroke engine how many revolutions would a camshaft turn when the crankshaft completes one revolution?
When replacing engine components. Which one of the following information sources would be used?
Service tick sheet
Which one of the following would check combustion gases in the cooling system?
Three types of oil pump are…
Gear, rotor & lift
Rotor, lift & eccentric vane
Gear, rotor & eccentric vane
Gear, lift & eccentric vane
What does the initials BDC stand for?
Bottom Diesel Compression
Bottom Dead Centre
Biased Diesel Centre
how many faces does a rotor have on a rotary engine have