When your car needs an engine tune up, turn to Ray’s OK Service. Our knowledgeable mechanics have been serving Milwaukee car owners since 1972, and are well-equipped to work on any type of vehicle.

Today’s engines are complex pieces of technology with dozens of moving parts. They can be extremely difficult to troubleshoot. Luckily, Ray’s OK Service has the best technicians in Wisconsin who always get down to the root of the problem.

What Is An Engine Tune-Up?

Gasoline engines all work pretty much the same way. Gas, air, and fire essentially power your heavy metal car forward. However, there are so many little components to this process that can wear down. A tune-up is a type of maintenance where our mechanics will inspect the whole engine, diagnose any problem areas, and then fix those problems right away. 

Tune-ups at Ray’s OK Service include:

  • Inspection of the engine’s overall condition

  • Replacement of spark plugs

  • Replacement of air and fuel filters

  • Cleaning of fuel system

  • Adjustment of the car’s idle and timing

  • Possible adjustment of the clutch for cars with manual transmissions

When Is It Time for a Tune-Up?

There are several things that indicate that it’s probably time for an engine tune-up:

  • You notice a decrease in your cars’ gas mileage

  • There’s a noticeable loss of power/torque

  • The engine sounds like it’s running rough or stalling at stops

  • There’s knocking or pinging sounds when you speed up or turn off the engine

  • You notice that the check engine light stays on after start up

Any of these issues are signs that your engine is not running optimally. Getting your car tuned-up leads to increased safety and reliability from your vehicle. They also help you reach maximum fuel efficiency and performance.

Contact Ray’s OK Service to book your next heating and air conditioning repair appointment!

When you keep your car in top running condition, you will save time and money in the long run. A well-maintained vehicle provides safe travel for you and your family, giving you security and peace of mind.


Welcome to Ray’s OK Service. Conveniently located in Greenfield, Wisconsin on Loomis Road at I-894. We specialize in the maintenance and repair of foreign and domestic vehicles. Ray’s OK Service originally opened in 1972 by Ray Kurian Sr. and sons.  As a family, they built a thriving auto repair business.  A company that prides itself on skilled automotive repair services, up to date technology, fair honest pricing, and cordial customer service. Now serving 3rd Generation Customers!!

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