i think efi or carb - distributor assembly needs some servicing.
i will see if i can get pictures of FAILED (hairline fractured aluminum casing at bottom) distributors of Cultus from a suzuki 3shop which they have been replacing quietly when customer is coming with warranty claim for high fuel consumption, abrupt stall, knocking issues. - a suzuki guy i picked from Port Qasim road sometime back, i did not spared him with so much questions i can remember from forum about cultus he shared the info as manufacturing defect in October 2009 to April batch of 2010 cultus.
To my surprise he said factory sends a circular letter to all 3s shops in Pakistan to RECALL the vehicles & replace the equipment and less then 10% cars are reported back. Pak Suzuki send out replacement from ware house by hand in 24 hours with examiner to recollect the exchanged part & damage that so only to be recycled.
wah wah 3 S wah you people have no sympathy to users.