my 300 e was causing trouble, missing and generally playing up, would suddenly start to miss and on one occasion stalled on me,
it would lose total power and would battle to pull itself along.

Information from this forum suggested resistor ends on the spark plugs, low and behold check to-day revealed one resistor end defunct....... ordered new set. One replaced to get me going and everything appears back to normal, no miss and no stall :p
worth a bit of a look. gd.