Question about 1987 BMW 3 Series
After cold start engine runs like on 3 cylinders. Its like there is no gas so I have to press gas pedal. Engine takes gas but still runs very bad and out of exhaust system I can see black smoke.
As temperature rises engine runs smother I'd say normal. Stil after longer driving on higher rpm inside exhaust pipe is black.
Sounds like you're running rich.
First, change the air filter, and check that the air intake isn't blocked somewhere.
If that doesn't sort it out, it's the carb. They have an automatic choke (cold start), which could be sticking on and causing problems.
One thing it isn't is the timing belt (sorry Satanscash) as this engine doesn't have one... and even if it did, failure of the belt results in a very dead engine!
Posted on Jan 20, 2010
First check and replace the spark plugs, I suggest having a compression test done at the same time to make sure the piston rings arent bad.
Next, youwill ahve to clean and service the carb because is sounds like its not getting the right amount of gas.
If the car always runs poorly it is most likely the timing belt that is bad and will need to be replaced
Posted on Sep 04, 2009
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Posted on Jan 02, 2017
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