I seem to have a lot of black smoke coming from the exhaust especially when I'm changing up gear but even on the flatwhen I go to change it lets out a puff of black smoke I have had this 3 weeks and had it back in garage twice I am thinkin of forgetting the deal is this black smoke normal?
It is a diesel. They all make black smoke. This is because of unburned fuel being chucked out of the exhaust. All diesels do the same. It is quite normal.
I have a 97 Frontera 5 door estate. I bought it when it was 3 yrs old. I change the oil and filter about every 6000 miles and use Castrol Magnatec GTD. There is no black smoke except a little on start up which is normal. If your vehicle is putting out a lot of smoke. if it is a diesel perhaps it needs the injectors overhauling. If it is petrol a good service may help if not get rid because the rings may be shot.
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