when RPM unstable

ebwra42tfn

when experience problem mechanically car unstable RPM, don't be fast take decision to replaced component bot sure, possible decision can not finish problem, especially this phenomenon often happens in old vehicle. i am ever experience problem likes above mentioned, i begin to investigate every component that assumed can give influence towards not the stable rpm or engine can not stationary a few moments after walk.

the phenomenon, in morning normal permanent engine with RPM stable, but a few moments after hot engine increases (in mercedes temperature 80 degrees stills assumed normal), RPM even also begin to dance with joy, even less in a condition stopped road, various means i have goed among others bring to several repair shops, the result zero big, replaced paking and kit carburetor, setting to repeat points top in distributor (kit he is replaced new), sparkplug cable is replaced, even ever also replaced carburetor, but the result being equal. this problem harries idea for no freshment drives. 

during 6 my months copes, up to at one time thought by me about electrical, begin me trace electric current in all important stripes up to final focus in werstan koil, then tried to doesn't use werstan, result at can not be guessed absolutely, engine is bringed life during more less 3 clocks, also test tries at traffic jam, rpm seen stable,  and grateful freshment drives even also i get to return.