Engine Repair in Thornhill

Engine Repair Services

We offer a full range of engine repair services to keep your car running smoothly in Thornhill. 



Engine Maintenance

Regular engine maintenance is honestly the best way to avoid expensive repairs down the road. Our maintenance services include:

• Oil and filter changes
• Spark plug replacement
• Fuel system cleaning
• Belt and hose inspection
• Cooling system checks
• Replace air filter

We stick with top-notch parts and fluids that meet or beat manufacturer standards. Catching problems early during routine maintenance can save you a fortune later.

Our techs keep detailed records of everything we do and can help you set up a personalized maintenance plan.

Engine Replacement

Sometimes, replacing the engine is just the smarter move compared to patching up an old one. We can install both new and rebuilt engines for most vehicles.

Here’s what our engine replacement process looks like:

1. We start with a thorough diagnosis to be sure replacement is needed.
2. Then, we give you a detailed estimate with different options.
3. Next, we remove the old engine and install the new or rebuilt one.
4. Finally, we test all related systems to make sure everything works.

Most engine swaps take about 3-5 days, depending on the car or truck. We stand behind our work with a warranty and only use quality parts that match OEM specs.

With proper installation, a replacement engine can seriously extend your car’s life—without the price tag of a new vehicle. We’ll handle the whole process, including getting rid of your old engine the right way.

Check Engine Light Diagnostic

When your check engine light illuminates, don't panic—bring your vehicle to MR Automotive where our ASE-certified technicians will identify the exact issue using state-of-the-art diagnostic equipment. Unlike quick-service chains that simply read codes, we perform comprehensive testing to pinpoint the root cause, not just the symptoms. 

Our thorough diagnostic service includes scanning all computer systems, performing visual inspections, and conducting road tests when necessary—all followed by a clear explanation of our findings and repair recommendations with upfront pricing. 

Timing Belt

The timing belt is a pretty critical part—it keeps the crankshaft and camshaft moving in sync. Most car makers say to replace it every 60,000-100,000 miles.

If a timing belt fails, it can totally wreck your engine. Watch out for signs like:

• Misfiring
• Ticking sounds from the engine
• Oil leaks near the motor
• Engine that just won’t start

Our timing belt service covers inspection of related parts like water pumps, tensioners, and pulleys. A lot of mechanics suggest swapping these parts at the same time since you’re already in there.

We use parts recommended by the manufacturer. This isn’t a job for amateurs—our team has the right tools and experience for such a precise task.

Cylinder Block

The cylinder block is the backbone of your engine. Problems here can really mess with performance and reliability.

Common cylinder block issues we repair include:

• Cracks
• Warped surfaces
• Damaged cylinder walls
• Coolant leaks
• Worn bearings

We’ve got specialized equipment to spot even tiny cracks most folks would miss. Our shop can handle block machining, cylinder honing, and other detailed repairs right here in Thornhill.

Block repairs aren’t simple—they take serious skill and the right tools. Some things can be fixed, but sometimes replacement is the only real option. We’ll give you honest advice and lay out your choices.

Cylinder Head

The cylinder head sits on top of the engine block and holds the valves, springs, and other important bits. Problems here usually show up as performance issues, overheating, or burning oil.

Here’s what we can do:

• Remove and inspect cylinder heads
• Replace or adjust valves
• Clean out carbon buildup
• Resurface warped heads
• Replace head gaskets

A blown head gasket often means white smoke, overheating, or weird-looking oil. Fixing it means taking the cylinder head off completely.

We pressure test all heads before putting them back to make sure

everything’s solid. Our specialists follow the right torque specs when installing head bolts, so you don’t get leaks or future headaches. Most cylinder head repairs take anywhere from one to three days, depending on what parts we need and how much work’s involved.

Signs Your Vehicle Has Engine Problems