car runs ok at 40klm per hour go faster it breaks down . i have changed plugs, leads, coil, new fuel filter, alr filter have had it on an analiser but doesn't give any answers i think the computor in the daewoo is basic.the gaskit cover was leaking oil over the plugs etc, had the fuel checked, i hope some one out there can help me i know its a daewoo but my wife loves it regards peterwebb46 @hotmail.com