1986 300SL running lumpy

[alan a]

1986 300SL running lumpy changed plug leads distributor cap and rota arm still lumpy ; help needed please, or does anyone know a good old Merc mechanic in the Hainault Essex area

 

[gbjeppm]

Have you checked the OVP relay?

Is your ABS light on as well?

Check all your vacuum hoses, thats where I would start.

Can't help with an Indie, although I am sure someone will suggest someone shortly.