Motor Vehicle Unit 172 Flashcards

Injectors in a multi-point injection system usually spray atomized fuel very close to the:

When fitting a knock sensor it should always be:

A manifold absolute pressure (MAP) sensor measures:

The name of the component which rotates in a distributor cap is:

One benefit of using a coil per plug system is that the:

What three harmful gases will the catalyst convert?

After a faulty fuel injection air mass meter has been replaced it is often necessary to:

What equipment would be used to check the operational efficiency of replaced MPI fuel injectors?

When checking petrol Multi Point Injection system pressure, the test should be carried out on the:

Tuned lengths of both inlet and exhaust manifolds are used to greatly improve:

When injectors operate individually, this is called:

A faulty oxygen sensor will affect the:

What effect would an open circuit coolant temperature sensor have on an engine management system?

In which one of the following components would the ignition pulse generator be located?

Which one of the following cylinder heads is more likely to cross thread a spark plug?

If a car fails to crank when starting, which one of the following would normally be the first to be tested?

An accurate method of checking ignition timing on an engine with a coil per plug system is to fit a:

Glowing red hot spark plugs often cause an engine running fault called:

The term pinking refers to a noise heard in the engine when it suffers from being:

A common cause of poor starting in damp conditions is:

Replaced exhaust components must comply with:

Which one of the following items of equipment would be used to check the operational efficiency of a replaced catalyst converter?

One method of reducing exhaust noise is to use:

A resonator box is fitted to an exhaust system to:

Which one of the following can cause internal corrosion of an exhaust system?

When removing and replacing light vehicle diesel injectors, which other components should always be replaced?

Name one design difference between the SPI and MPI fuel systems:

Where is a common place on a four-stroke petrol engine for the ignition crank angle sensor to be located?

One purpose of a resilient mounting on an exhaust system is to:

What is the purpose of an air filter?

An EOBD system warns of an Electronic Fuel Injection running fault by:

Which one of the following engine running test methods would determine whether a light vehicle electronically controlled diesel injector was working?

When retrieving fault codes, what equipment should initially be connected to the OBD socket?

A coolant temperature sensor with a Negative Temperature Coefficient (NTC) will:

When the petrol fuel to air ratio control is monitored by exhaust Lambda sensors, it is known as:

Which one of the following is an important action before removing a spark plug?

When examining spark plugs, a white speckled insulator tip would indicate a very:

A simple test for the correct running of an engine is to look at the:

Which one of the following sensors sends signals to the engine management system for ignition timing adjustments?

Which engine stroke does the spark plug normally fire on?

What would a black soot covered spark plug indicate?

Before replacing an exhaust manifold it must be ensured that:

Which one of the following light vehicle exhaust components would normally be fitted to a diesel engine but not fitted to a petrol engine?

Fuel and air swirl in a combustion chamber is assisted by:

Which one of the following is a symptom of a blocked exhaust?

For what reason do turbocharger bearings require constant cooling?

Which component distributes high voltage to the distributor cap segments?