A tune up at Expressway Mechanic on Duty includes new spark plug wires, a new distributor and new spark plugs. A proper tune up starts with removing your spark plugs and doing a compression check in each cylinder. It is our goal when performing a tune up to make your car run like it was new. If that means cleaning the fuel injectors and checking the fuel lines for proper pressure then that’s we do. We pride ourselves on full service (complete) tune ups.