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though, it only happens intermittently. Sometimes, you start it and there’s no message at all. So it
might be a software problem, I don't know. Or maybe it could be a defective sensor.
Al: Is the engine working properly?
Mr Rooney: It seems to be fine, yeah.
Al: It doesn't appear to be misfiring or down on power?
Mr Rooney: No, we haven't noticed anything. Presumably, it can't be anything too serious. We
thought it was possibly water in the fuel system because it's an outdoor unit. But in that case, I
assume there'd be major problems with it.
Al: Has it been refuelled recently?
Mr Rooney: Not that recently.
Al: And was it refuelled with diesel stored in your own tank, or directly from a delivery tanker?
Mr Rooney: From a tanker truck.
Al: I doubt it's water, then, if the fuel went in directly from a delivery. You said the warning
doesn't display systematically?
Mr Rooney: No.
Al: In what sort of circumstances does it come up?
Mr Rooney: Well, when you start it up for the first time each day, it comes up. But then if you
stop it, and start it again a short time after, there's no message. It's when it’s been off for a long
time that you get the warning.
Al: OK. So it’s certainly a question of temperature. It only comes up when it's started from cold?
Mr Rooney: Urn, yeah. Exactly.
Al: Hm, it sounds like it’s a faulty fuel pre-heater. It's probably just one of the pre-heater plugs
that's gone. It’s only a minor fault.
Mr Rooney: Oh, right. So it doesn't need urgent attention?
Al: No. It can be replaced at the next service. Keep an eye on it, though. If any other problems
start to show up give us a call and we'll send someone over.

b Match the words in the box to their synonyms in the sentences (1 -7).

defect; defective; fault; faulty; intermittently; major; minor;
properly; systematically;
1 There’s a problem fault / .
2 Perhaps something in the fuel injection system is wrong / .
3 It’s a serious problem. .
4 It’s a slight problem .
5 Is it working correctly? .
6 The problem only occurs from time to time. .
7 The problem doesn’t occur every time .

c Al made the following notes about three engine problems. Match the faults (1-3) to the
possible causes (a-c).
1. Starter motor sometimes works, sometimes doesn't. Engine is 9 years old.
2. Distribution belt failed. Engine blew. Belt replaced recently - almost new
3. New engine. Runs for 20 mins, then temp, gauge always goes into red, and engine cuts out
(safety override)

a Cooling system problem.
Fan? Water pump?
b Electrical contact problem.
Loose connection?
c Manufacturing defect?

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