Engine Repair & Diagnostics in Janesville, WI

Expert Engine Service for Reliable Performance & Long-Term Protection

If your vehicle is running rough, losing power, or showing a check engine light, it’s time to call the trusted pros at Centerway Auto Repair in Janesville, WI. Our ASE-certified technicians provide accurate engine diagnostics and dependable engine repair solutions designed to keep your vehicle safe, efficient, and road-ready.



We handle everything from timing belt replacements to ignition system repairs, helping you avoid breakdowns and extend the life of your engine. Whether you're hearing strange noises, noticing performance issues, or simply due for scheduled service, our team has the experience and tools to pinpoint problems fast—and fix them right the first time.

A man is working on the engine of a car in a garage.

Our Engine Repair & Diagnostic Services

Engine Diagnostics

Our advanced diagnostic tools allow us to quickly identify engine trouble codes, performance issues, misfires, and more. We don’t guess—we diagnose. From a flashing check engine light to intermittent loss of power, we’ll track down the problem with accuracy and efficiency.


Timing Belt & Timing Chain Replacement

A worn or broken timing belt can cause catastrophic engine damage. We inspect, replace, and adjust timing belts and chains based on manufacturer recommendations, ensuring your engine’s internal components stay in sync. If your vehicle is nearing the 60,000–100,000 mile range, now is the time to schedule this vital service.


Engine Repair & Rebuild

From minor repairs to full engine rebuilds, our team is equipped to restore performance and reliability. Whether you’re dealing with gasket leaks, overheating, compression issues, or valve problems, we provide honest assessments and expert solutions for gas-powered engines on most makes and models.


Fuel Injection Service

Clogged or dirty fuel injectors can cause poor fuel economy, misfires, or hard starts. We perform full fuel injection cleaning and repair to restore proper fuel delivery and combustion.


Spark Plug & Ignition Coil Replacement

Misfires and hard starting are often linked to worn spark plugs or failing ignition coils. We replace both components with high-quality OEM or equivalent parts to restore performance and prevent further engine strain.

Schedule Engine Service in Janesville Today

Don’t ignore engine warning signs or delay critical maintenance. If your check engine light is on or your vehicle isn’t running as it should, call Centerway Auto Repair for reliable engine diagnostics in Janesville, WI.


We’ll identify the issue and get youback on the road with confidence.