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	The July/August issue of Aftermarket featured a Tea Break quiz hosted by our much-loved (and troubled!) technician, Arthur Parkitt.
	Give us the right answers and you could win a shiny 4Gb Creative Zen MP3 player, courtesy of Arthur. Simply answer the following questions correctly for your chance to win.

1. Some GDI and FSI engines use Stratified Combustion, what are the advantages of using Stratified Combustion?

a) The engine becomes more efficient and economical
b) The engine is lighter and smaller
c) The engine starts easier.

2. What is the main function of a vehicle's primary lambda sensor?

a) To maintain lambda one, which is basically an air to fuel ratio of 14.75 to 1
b) To maintain lambda one, which is basically an air to fuel ratio of 15.75 to 1
c) To maintain lambda three, whilst the engine is operating in the Homogenous mode.

3. How many degrees of angle normally separate the two cylinder banks of a traditional V- engine?

a) 90° or 60°.
b) 30° or 60°
c) 80° or 120°

4. What are the High/Low voltages used to represent code on a LIN-Bus system's communication wire?

a) 2-volts when high, 1-volt when low
b) 5-volts when high, 1-volt when low
c) 12-volts when high, 1-volt when low

5. For what purpose is the code, which is printed on the top of a Piezo injector, entered into the fuel system's ECU when replacing injectors?

a) To provide the year and date that the injector was manufactured
b) To provide the spill back pressure to the ECU
c) To provide manufacturing tolerances to the ECU

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The winner will be drawn at random from correct entries live at the GEA Aftermarket Technical Workshop on Monday 20th October. Arthur's decision is final and no alternative prizes will be offered. Good luck!