1.coolant level check kerain ager kumm nahi hai to water body aur headgasket theek hai.
2.gari heat honay per coolant kay reservior ka level check kerain ager max mark say ooper hai aur gari thandi honay per reservior main coolant level min aur max kay centre main hai to radiator cap sahi kaam ker raha hai
ager aisa nahi hai to radiator cap change kerain.
3.tappet clearance check kerwain cng per tappet clearance petrol say different hoti hai.
4.ignition timing check kerain cng per ignition timing 5-10 degree advance ki jaati hai iss say ziada nahi.
5.jo factory say plugs mehran main aatay hain wohi use kerain ya ager bosch 4 tip use kernay hain to same number kay use kerain.plugs heat sink ka bhi kaam kertay hain.