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Q: rough idel first start also misfire on 1990 BMW 750iL

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
runs rough when first starts like missing
(1) Answer
Rough running could be due perished breather hoses in the back of the engine, perished intake manifold gasket or some other vacuum leak

Is the car misfiring constantly? what type of fuel do you use? is it from a reputable source? remove coil covers and check coils and plug condition, common for the rocker cover gasket to leak and the coil/plug valley fill with oil causing a misfire.
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