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Hi i have a vw polo 2009 model petrol I was driving at 25mph the car lost power right down to 0mph then the engine cut out on me and now it will not start can any one give me a clue what it could be i have changed the spark plugs and changed the spark plug leads and i have check the fuel pump and still wont start
why does the blue box say 2005 swift and 03 polo?, confusing , so I will answer in the generic. (any modern car)
any engine dies for vast reasons, I have a list of 50 .
but breaks down to 4. (in pure physics) Otto cycle engines, GAS.
1: lost DC 12volt power to the EFI system( electronic fuel injection)
2: lost compression on more or all cylinders, 150psi min. is a goal.
3: lost spark, weak spark or mal-timed spark.
4: bad fueling, (too little , or too rich fuel injection)
The ECU works hard to sustain running, via idle speed control valve
and spark timing tricks.
when the above 4 go bad, the ISC function fails and the engine
stalls.
so does, skipping 60,000 mile tuneups. that cause any of the 4.
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