MOTOR VEHICLE UNIT 172 EXAM
WITH CORRECT QUESTIONS AND
ANSWERS 2025
1. Injectors in a multi-point injection system usually spray
atomised fuel very close to the: - CORRECT-ANSWERSinlet valve
When fitting a knock sensor it should always be - CORRECT-
ANSWERSset to the specific torque setting
A manifold absolute pressure (MAP) sensor measures: - CORRECT-
ANSWERSinduction air vacuum
The name of the component which rotates in a distributor cap is -
CORRECT-ANSWERSrotor arm
One benefit of using a coil per plug system is that the - CORRECT-
ANSWERSsystem does not need high tension leads
, What three harmful gases will the catalyst convert? - CORRECT-
ANSWERSHC+CO+Nox
After a faulty fuel injection air mass meter has been replaced it
is often necessary to: - CORRECT-ANSWERSerase existing fault codes
What equipment would be used to check the operational efficiency
of replaced MPI fuel injectors? - CORRECT-ANSWERSemissions tester
When checking petrol Multi Point Injection system pressure, the
test should be carried out on the: - CORRECT-ANSWERSfuel injector
rail
Tuned lengths of both inlet and exhaust manifolds are used to
greatly improve: - CORRECT-ANSWERScylinder filling
When injectors operate individually, this is called: - CORRECT-
ANSWERSsequential
WITH CORRECT QUESTIONS AND
ANSWERS 2025
1. Injectors in a multi-point injection system usually spray
atomised fuel very close to the: - CORRECT-ANSWERSinlet valve
When fitting a knock sensor it should always be - CORRECT-
ANSWERSset to the specific torque setting
A manifold absolute pressure (MAP) sensor measures: - CORRECT-
ANSWERSinduction air vacuum
The name of the component which rotates in a distributor cap is -
CORRECT-ANSWERSrotor arm
One benefit of using a coil per plug system is that the - CORRECT-
ANSWERSsystem does not need high tension leads
, What three harmful gases will the catalyst convert? - CORRECT-
ANSWERSHC+CO+Nox
After a faulty fuel injection air mass meter has been replaced it
is often necessary to: - CORRECT-ANSWERSerase existing fault codes
What equipment would be used to check the operational efficiency
of replaced MPI fuel injectors? - CORRECT-ANSWERSemissions tester
When checking petrol Multi Point Injection system pressure, the
test should be carried out on the: - CORRECT-ANSWERSfuel injector
rail
Tuned lengths of both inlet and exhaust manifolds are used to
greatly improve: - CORRECT-ANSWERScylinder filling
When injectors operate individually, this is called: - CORRECT-
ANSWERSsequential
