Car engine repair and diagnostics is one of the most critical services your vehicle will ever need. When something goes wrong under the hood, a slow or inaccurate diagnosis can turn a manageable fix into a full engine replacement. At Tire Choice Auto Centre in North York, our certified technicians use advanced OBD-II scanners and compression testing equipment to identify the root cause, not just the symptom. As part of our complete [Internal Link: Car Mechanical Services], engine diagnostics covers everything from a check engine light in Toronto traffic to a seized engine after a harsh Ontario winter.
What Our Car Engine Repair & Diagnostics Service Includes
Every engine diagnosis at our North York shop begins with a full OBD-II scan to read all active and stored fault codes, followed by a physical inspection of key components including the cylinder head, timing belt or timing chain, spark plugs, ignition coils, fuel injectors, and the PCV valve. Where fault codes indicate deeper issues, we perform a compression test and leak-down test to measure internal engine health. Whether you’re dealing with engine misfires, rough idle, oil consumption, or a blown head gasket, we provide a written report of findings and a clear repair plan before any work begins.
Full OBD-II diagnostic scan to read engine fault codes and fuel trim data.
Compression test and leak-down test to assess cylinder and piston health.
Inspection of the timing belt, timing chain, camshaft, and crankshaft position sensors.
Spark plug, ignition coil, mass air flow sensor, and throttle body evaluation.
Engine oil pressure check, oil pan inspection, and PCV valve and EGR valve assessment.
Engine rebuild, short block repair, long block repair, and engine replacement when required.
Car Engine Repair & Diagnostics Cost in North York
Here is our general estimates for common engine repair and diagnostic services in Ontario. Actual costs vary by vehicle make, model, engine size, and parts availability.
| Service | Est. Cost (CAD) | Notes |
|---|---|---|
| OBD-II Engine Diagnostic Scan | $110 – $160 | Includes written fault code report |
| Compression & Leak-Down Test | $140 – $220 | Per engine, all cylinders |
| Timing Belt Replacement | $500 – $1,000 | Includes tensioner & water pump |
| Timing Chain Replacement | $800 – $1,800 | Varies by engine layout |
| Head Gasket Repair | $1,200 – $2,500 | Cylinder head machining may be extra |
| Engine Rebuild (Short/Long Block) | $3,500 – $7,500+ | Depends on engine size & condition |
Prices are estimates only. Final pricing depends on vehicle type, parts required, and labour. Contact Tire Choice Auto Centre for a precise written quote.
Why Choose Tire Choice Auto Centre for Engine Repair in Ontario
| What We Offer | Why It Matters to You |
|---|---|
| Advanced OBD-II equipment | Accurate fault code analysis, no guesswork, no unnecessary repairs |
| Certified technicians | Confidence your engine is repaired correctly the first time |
| Ontario winter-aware inspections | We know how road salt and cold starts stress engines in the GTA |
| Written diagnostic reports | Full transparency—you decide what gets fixed and when |
| Centrally located in North York | Convenient access from Scarborough, Markham, and downtown Toronto |
Serving Engine Repair Customers Across Ontario
Tire Choice Auto Centre is based in North York and serves drivers from across the Greater Toronto Area and beyond, including Scarborough, Markham, Vaughan, Brampton, Mississauga, Richmond Hill, Hamilton, and Oshawa. We understand the specific demands Ontario driving places on engines, from cold winter starts in January that stress crankshaft bearings and oil pumps, to stop-and-go summer traffic in Toronto that pushes combustion chambers to their limits. Whether you’re commuting from Etobicoke or driving in from Pickering, our shop is equipped to handle your engine repair needs with a fast turnaround and clear communication throughout.
FREQUENTLY ASKED QUESTIONS
An OBD-II engine diagnostic scan at a reputable shop in North York typically costs between $110 and $160. This fee covers a full scan of active and stored fault codes, a written report of findings, and a technician review. Some shops apply the diagnostic fee toward the repair cost, ask about this when you book.
A standard OBD-II diagnostic scan takes about 30 to 60 minutes. If the check engine light requires a compression test or leak-down test to confirm internal engine issues, expect two to three hours. Complex problems involving the camshaft position sensor or crankshaft position sensor may require additional testing before a repair recommendation is made.
A check engine light can indicate anything from a loose gas cap to engine misfires, a failing oxygen sensor, a faulty mass air flow sensor, or a blown head gasket. In Ontario, a check engine light can also trigger a failed Drive Clean emissions test, so it is important to have it diagnosed and resolved promptly. Ignoring it rarely makes the problem cheaper.
Cold Ontario winters put significant strain on engine components. Motor oil thickens in freezing temperatures, increasing wear on engine bearings, the oil pump, and piston rings during cold starts. Road salt accelerates corrosion on the engine block exterior and gasket sealing surfaces. We recommend an engine inspection each fall, before temperatures drop, and again in spring to catch any damage caused by the season.
Engine diagnostics uses an OBD-II scanner and physical tests to find the cause of a specific problem, such as engine misfires or rough idle. An engine tune-up is a scheduled maintenance service that replaces wear items like spark plugs, air filters, and ignition coils to restore engine performance before problems develop. Diagnostics tells you what is wrong; a tune-up prevents problems from occurring in the first place.
The decision depends on the type of damage and the vehicle’s overall condition and value. A blown head gasket or worn timing belt is almost always worth repairing. Severe internal damage, such as a seized piston, spun engine bearings, or a cracked engine block, may make engine replacement the more cost-effective option. Our technicians will provide a written estimate for both options so you can make an informed decision without pressure.
Book Your Engine Diagnostic in North York Today
Don’t ignore warning signs like a check engine light, engine knocking, rough idle, or loss of power, these symptoms rarely resolve on their own and can escalate into costly engine replacement. Contact Tire Choice Auto Centre in North York and get a thorough engine diagnostic with a written report so you know exactly what your vehicle needs.
📞 Call Us: +1 (416) 984-2626
📅 Book Online at tirechoice.ca or visit us at:
1861 O’Connor Dr Unit 3, North York, ON M4A 1X1, Canada