paa jee, ahmad bhai ki gari pehle he itni purani hy, kion engine ka janaza nikalwaengay 
well i do agree that cars CAN run on lesser cylinders then they have, like if u remove a plug or shut single injector, the car will STILL run but there wud be MASSIVE missing n jerking n everything which shud be evident even if the engine runs on petrol for 5 seconds. i do agree with all that u said mehmood bhai, but the brother who had the problem with his car didnt comment on the performance of his car on petrol. thats why i was confused...
P.S. long ago, i drove my khyber on 2 cylinders for 30kms
in the lowest possible gear, the top speed was 55km/h 