I have a 54 plate renault megane 1.4 dynamique, its idleing really badly lumpy, i renewed the coil packs and sparkplugs, maf sensor, air filter, its still exactly the same, when it is ticking over if i disconnect the air pipe from the brake servo or the pipe from the top of the throttle body to the purge valve it picks up and seems to run ok, any advice/help would be very much appreciated.
please help megane 1.4
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