My Nissan Almera has no spark change the crank and cam sensor..The oil light stays on if I switch of the car.Check the wiring is ok.wat could be the problem please help me

Change the oil pressure switch and see if that fixes it .

Ok thank you I will do that.Wat about the problem with no spark.Please help me

On some cars if the oil pressure / switch fails it stops the engine starting to avoid engine damage .

Brought oil pressure switch .Still no spark.Coil number 1 and 4 getting very hot wen I turn key to ignition.

Check the battery earth wire is clean and tight . You should also have an earth wire somewhere from engine / transmission to the body that needs checking . You can use a jump lead as a temp measure if it has a good connection on engine and on body to try , but must be good connection .

Ok thank you very much I will try that