hi fellow members
i have a strange problem ,my car having missfire/backfire and give pathaka from airfilter,(airfilter is new one)this happen only on petrol with low rpm,other hand on cng its fine,no missing and no other issue,can any one tell me what can be issue?
because i have observed that all people have problems on cng,but in my case cng is fine petrol have misfire issue.
also pickup is a bit low on petrol ,on cng its fine,
waiting for your replies