Black smoke, using alot of petrol, no loss of power, funny smell
Just had new cat, car done 117000,17000in the last 15mth, using alot of petrol, blowing black smoke, and not tickin over properly. sometimes car will be fine but then same problems reaccur?puzzled had it in garage loads since getting it, had it 16mth, had new lamber sensor, cam shaft sensor and seal and new catalytic converter, would appriciate any help, thanks
Re: black smoke, using alot of petrol, no loss of power,...
If it just smokes when it idles, i'd be inclined to suggest it's the oil seals on the turbo... Leave it 10 minutes, see if the smoke starts, give the accelerator lots of gas to see if the smoke stops... If it does, then it's the turbo oil seals....
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black smoke indicates that it is over fuelling, probably from a faulty injector
the eggs smell is hydrogen sulphide ( rotten egg gas) and is the cat converter doing its job ( same as new car exhaust smell)
You need to have the the MAF checked.There may be a fault in the wiring loom or in the MAF itself.As the MAF has been changed you may also be starving the CAT of airflow.Check for restrictions caused by a faulty MAF.Starving the CAT will cause severe overheating or you may be overfuelling and causing the CAT to overheat due to wet fuel in the system...
Get the codes scanned, if it is the cat-convertor, you can either replace one or both. If they're bolt-on you can save alot by replacing yourself. Welded on is shop job.I used a technique using lacquer thinner to rid the carbon out of the cats. One pint to half a tank. It'll smoke and buck for a little while, but does work.
Possible catalytic converter issue. When the Cat gets clogged, it will prevent the vehicle from running. You already have one sign (the excessive smoke) another sign is a sulphur smelling exhaust as well as a lot of heat from the general vicinity of the Cat.