its clean but wats tht carbon doin on it?i mean how it got up there???its easily removable but still worries me...
n ive tried to change oil at 5000 kms but oil becomes too black,yes i have thermostat n new PCV which is working fine..change aircleaner at 6-8 k kms becuz guard air filters r available n they r not the best ones 
i will get tappets wen car is cold...how ever there is another problem too n ill qrite in down seperately..
problem is on petrol.wen car is on petrol n i try to shut it off,it dont goes off,it takes some hiccups n if i turn key back,engine is ON again..mechanic tried all "mechanicy" to rectify it but of no use..he adjusted timing,mixture and idle rpm but problem is still as it is...he said tht the timing bearing is one tooth or so advanced n timing cover will need to be opened so to see wats really happening..mechanic is good n i get all car work from him.now xulifiqar bhai i need ur opnion on how to rectify this prob..n yes the carb was totally cleaned and was taken out,plunger was changed,mixture knob was changed,float was adjusted ..car used to give black smoke on petrol,now smoke is not there but this knocking thing is still as it used to be...
