Quote:
Originally Posted by rsmartin
haven't done any further work on the rough idle/miss issue. BUT i've noticed something. it seems to run smoothest on cold startup and gets rougher as it warms up... any clue there?
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Coil can cause this condition.
I assume you have changed out the leads, distributor cap and rotor all with OEM Bosch or Beru. Plugs should be non resistive types. (Be careful of erzatz Made in R.O.C. Bosch)
Use the best fuel for this car - non of that ethanol C%$p
Misses are 99.9% electrical
I have changed out a Fuel distributor on a W126 - only after it had gone 500,000 kilometres.
However - using too many fuel conditioners or ethanol fuel can cause the FD to play up.