I would like to know why there is black smoke comming from my car and at times it jerks when driving.?

Question

I have checked my car spark plugs and there is abit of carbon on it. I have consulted a few of my friends , they say it is due to the carberator which is giving to much of petrol. This petrol are not burn properly thus giving all the carbon residue on the plugs which is effecting the car preformence. Well I am not that sure of the answer.

Answer 1

That might not be all of your problem. A good tune up should help a lot. The most common things to do during a tune up is of course change the oil, and oil filter, a new air filter, new spart plugs, etc.

But what a lot of people do not know, or do not do, is replace the cap and rotor on the distributor. Its very cheap, and needs to be done at the very least once every other year. Also, try purchasing a new, not used set of spark plug wires. When wires get old, they tend to loose their ability to carry the energy to the plug.

If you are still having problems, then it very well could be your carberator. It might need rebuilding, or just a good cleaning. Which you can purchase carb cleaners at any automotive store.

Good luck!

Answer 2

You using a too rich petrol/air mixture. This is altered on the carburetter and if you have a diagram of this component it is a very easy adjustment. Locate the mixture set screw and turn it clockwise for about a quarter turn. See how this goes. If it does not cure the problem then take it another quarter turn. The outlet of the tail pipe should show a light brown colour when it is correct. At present I expect it is sooty and black.
Another possibility is that oil is getting into the cylinder head through the piston rings and causing the black smoke although blue smoke is more usual.
Best of luck.

Answer 3

Your Friends are right , black smoke from a petrol driven car , can be various things IE blocked air filter, carburetor worn out or needs adjusting , carb flooding, more modern cars bad injector , lambada sensor duff, cat burnt out, direct injection cars, delivery jet broken or faulty. engine managment computor faulty . out of them all most likley air filter or carb ajustment

Answer 4

Year and model would help. Does it have a carb? Maybe the choke plate is stuck closed. If it's an injection system, maybe an injector is leaking.

Answer 5

if your car has a carburetter on it , it must be quite old

either it needs a good service and tune up , or the engine needs re-building (re-bore , new pistons and rings , new bearings etc.) may be cheaper to change the car

Answer 6

Black smoke is an over fueling problem

Answer 7

"Black Smoke" = Burning oil. Your engine is on its way out I'm afraid.

Answer 8

i think you should go to the experts so that they can see your problem..or you should clean your carberator first b4 going to the experts,,,or maybe bcoz of your gasoline..

Answer 9

see if the automatic choke is stuck