did anyone check the belts or see if one of the parts is partially locked up? i.e. the alternator,water pump,power steering pump,air conditioning pump.it may also be your blower motor. try not turning the heater on and have the settings for heat(temp control)to cold or off.if you don't smell the smell your blower motor may be shot.do you ever hear noise from under the dash ( by your feet) . that is the blower motor.he was referring to the boots at the bottom of the spark plug wires. what happens is as they age the boots will break down and bake onto the head of your motor by the top of the plugs. sometimes parts are expensive in a tuneup it varies greatly by the age of the car,make,model.foreign parts are usually more expensive anyway. it may be that your mechanic has a harder time getting a supplier for foreign parts thus the higher cost. or it may be teh mechanic took you for a fool who knows nothing about cars and just hosed you!! try another shop that good friend use next time.it is possible their may be a part of the boot burning still. check for black rubbery substance by the plugs. that would be the old boot melted on.you can lightly scrape it off with a samll screwdriver.
