2014 Astra GTC 1.4 auto Turbo 140HP - White smoke from exhaust | Technical matters | Back Room Forum

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Sat 25 Jun 2022 08:26

2014 Astra GTC 1.4 auto Turbo 140HP - White smoke from exhaust - Andrew Gidney

Hi,

Last week I managed to drive my car 5 miles with the oil filler cap not attached. There was no oil spray on my engine or under the bonnet, but the engine did start to falter and then there was a huge (and I do mean HUGE) amount of white smoke that exploded out of the exhaust. I stopped, waited 10 minutes after replacing the oil cap, started the engine, and the smoke was still evident. Another 10 minute wait and everything was OK, and has been ever since. Car feels normal again.

Can anyone explain why there was smoke and a faltering engine, and whether any lasting damage might have been down to engine, catalytic converter etc?

Many thanks,

Andy

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Sat 25 Jun 2022 09:14

2014 Astra GTC 1.4 auto Turbo 140HP - White smoke from exhaust - elekie&a/c doctor

Leaving the oil cap off allows excess air to enter the engine. The injection management system will throw a wobbly and try to compensate for this and over adjust. Can’t see it being a problem in the future.

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