Jerks after engine shuts ?

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Jerks after engine shuts ?

holla people ,
can some one tell me why car engine jerks normally on petrol after we shut engine ? on cng is fine but on petrol car jerks when i turn the switch off , its like jerks for 3 or 4 second and than stops ? is it cos of high rpm or race , i just had tunning done but this fault is still there ? can some one tell me the reason please . car is charade 86 turbo .

Gari.pk User 6447 asked on 10 Aug 2010 11:41:58 am

1 Answer

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Maani - on 10 Aug 2010 11:42:07 am

this is due to high rpm sets for cng.If you tune your car on petrol it will be fine,As the mixture will be adjusted on petrol.Mechanics set high rpm for cng so when you switch on petrol it will jerk.