hi all I have a 1991 300 sl 24 v the runs well but at pull away it starts miss firing and feels if it is going to swich off sometimes on top end it holds back but at idle it is fine. I have changed the fuel pumps, filters, injectors, seals, plugs, plugs wires, set up the CO2. I dont know were to look.Please help.

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Gareth Brockman