Petrol problem

[wasim12.w]

assalam u alikum. dear friends i have a mehran 2008. in petrol it gives jerks and also do emit black smock while in cng driving is smooth. recently i have changed spark plugs, air filter, wires, zic oil, fuel jets, point, and serviced already the carborater two times.

[racer7]

Bro it’s not a big issue. You have to visit some expert mechanic . He will dismental the carburetor completely and retune it. Also he will re-do the petrol settings and the problem will be resolved provided that the “fuel filter under the body near the left rear tyre” is clean and fuel pump is working properly. He may charge Rs.450/- for this whole job.

[wasim12.w]

thanks brother for your attention. but recently i changed the fuel filter and also done three times the carborator cleaning and settings but after tunning the car works fine upto one or two days and then the problem starts again. note: the fuel pump has high pressure

[redsony]

You may try cleaning your fuel tank. If that doesn't help either, then change your mechanic.