trouble shooting Flashcards

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1
Q

if an engine will not fir, what is the most like cause?

A

defective distributor
faulty coil
battery discharged
bad condenser

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2
Q

how would you detect a bad spark plug?

A

start the enginee
with an insulated handle screw driver, ground each plug to the engine,
the good plug will cause the engine to struggle but
the bad won’t

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3
Q

how would detect a bad condenser?

A

difficulty in starting

burning of contact points (the points would have a whitish appearance)

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4
Q

how would you detect a bad coil?

A

difficulty in starting, then the coil would become overheated

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5
Q

if the starter will not turn the engine

what are the most likely causes?

A

generator not charging
loose battery terminals
faulty starter switch
defective starter

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6
Q

what can cause a spark plug to foul?

A

when oil is forced between the cylinder wall and piston into the combustion chamber,
due to worn cylinder or broken piston rings.

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7
Q

what is the most likely cause of gas not reaching the carburetter?

A

lack of petrol in tank
choked gas line
faulty petrol pump
defective needle valve

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8
Q

what can cause an engine to misfire?

A
detached spark plug wire
faulty coil
unseated valves
bad spark plug
a faulty cylinder
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