Audi A2 1.4 Petrol - Misfire on Audi A"

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Mon 16 Nov 2015 20:18
Audi A2 1.4 Petrol - Misfire on Audi A" - John Scott

A2 misfires on one cylinder when thermostat opens and the engine is hot.

Numerous things tried plugs,plug leads,even accellerator pedel.Only misfires when hot.

Any ideas?

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Mon 16 Nov 2015 20:47
Audi A2 1.4 Petrol - Misfire on Audi A" - craig-pd130

Does that motor have individual coils per spark plug? Could be one of those breaking down.

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Mon 16 Nov 2015 22:25
Audi A2 1.4 Petrol - Misfire on Audi A" - Big John

The 1.4 16v engine also as fitted to other VAG cars of the time is fitted with a wasted spark coil pack(unless the A2 is different). Usually you get a two cylinder misfire with this but may be worth swapping anyway as they are prone to failure and are cheap to change.

Compression test may be useful to prove all is well with the oily bits
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Tue 17 Nov 2015 08:22
Audi A2 1.4 Petrol - Misfire on Audi A" It has a coil pack but only misfires when engine hot - John Scott

Does that motor have individual coils per spark plug? Could be one of those breaking down.

Does that motor have individual coils per spark plug? Could be one of those breaking down.

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Tue 17 Nov 2015 09:13
Audi A2 1.4 Petrol - Misfire on Audi A" It has a coil pack but only misfires when engine hot - slkfanboy

Had the same issue with an A2 a few years back and it was the ECU.

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Tue 17 Nov 2015 12:06
Audi A2 1.4 Petrol - Misfire on Audi A" It has a coil pack but only misfires when engine hot - John Scott

Had the same issue with an A2 a few years back and it was the ECU.

Many thanks for your information.Can you confirm your vehicle ran smoothly until the themostat opened then started to misfire and a new ECU cleared the misfire. Many thanks.

js24adams@googlemail.com

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Tue 17 Nov 2015 12:14
Audi A2 1.4 Petrol - Misfire on Audi A" It has a coil pack but only misfires when engine hot - elekie&a/c doctor

Have you determined which cylinder is misfiring?Ecu fault?that would be my last option.

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