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My car has 55,000 miles on it and the engine is running a little louder than it has in the past, and from time to time it will vibrate a little when idling. Are these indicators that it needs a tune up or that there is a problem? If I take it in to get a tune up, what things should I expect them to do? How much do tune up

Answers from the Automotive Experts

Amanda J. Pierce, MBA Tune-ups do vary from shop to shop. If you take your Suzuki to a dealership you might be paying more for their expertise, per say. Price does also depend on what actually needs to be done. I will say that spark plugs are due for replacement on most models around the 50k mark which you have reached. Check your owner's manual for the maintenance that should be performed at this time. I would plan on around $320 for a tune-up, which may include any unforeseen incidentals, such as; air filters, and a fuel system cleaning. The "louder" noise coming from the motor could be a number of possibilities, you can have them address that concern at the time of the tune-up.

Suzanne Grego, Technician at City of Philadelphia Fleet Management Lesli Hinshaw, A tune up usually consists of replacing spark plugs and spark plug wires and sometimes a cap and rotor for the distributor. Normally, I do not recommend a tune up until 100,000 miles unless there is a problem with the spark. Twenty years ago, they used to do them much more often (about every 30,000 miles), but the products used for cars are much better now than they were back then. The vibrating could possibly have something to do with spark - if you are have a miss in your engine (one of the cylinders is not contributing), the vehicle could run a little rough. However, it may not have anything to do with the spark - it could be a cracked or worn engine mount. I would suggest the next time you get an oil change to explain your concerns to the technician and allow them to correctly diagnose the problem. Suzanne

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