hi, i have a mk4 xr3i cab. i have recently being getting a strange vibrating sound not sure where its coming from, also my exhaust is leakin badly at the joint from the front pipe to the mid section, could this have caused something else to go wrong, the car is gutless and keeps dyin on me. thanks for any help
sorry it also sounds like a diesel car

i have put new plugs, leads and dizzy cap on n the head gasket was replaced about 4 weeks ago aswell