Engine Repair
Expert engine repair in St Paul, MN. Complete engine diagnostics, maintenance, rebuilding, and emission system repairs for all makes and models.

Engine trouble is stressful — it's the heart of your vehicle and usually your biggest repair worry. Roy's Service takes the fear out of it with an honest diagnosis and a clear plan before any work starts. Whether it's a noise, a leak, or a loss of power, we tell St Paul drivers exactly what's going on and what it takes to fix it. Call (651) 776-9494 or book online.
Signs your engine needs attention
- Knocking, ticking, or tapping noises
- Oil or coolant leaks under the car
- Overheating or running hot
- Loss of power, rough running, or misfires
- Excessive exhaust smoke
- Check-engine light with drivability issues
Diagnosis before repair
Engine work should never start with a guess. We diagnose the root cause first, then give you a clear explanation and an upfront price — so you know exactly what you're paying for and why.
- Pinpoint the actual fault before quoting
- Explain the options in plain language
- Quote upfront, no surprise add-ons
What we repair
- Leaks (valve cover, oil pan, seals, gaskets)
- Overheating and cooling-related engine issues
- Misfires, rough idle, and drivability faults
- Timing components and belts
- Sensors and engine electrical
- Major repairs when needed — explained clearly first
Catch it early, pay less
A small leak or a minor noise caught early is far cheaper than the failure it turns into. If we spot something starting, we'll tell you so you can plan — not panic.
All makes and models
Domestic, Asian, and European vehicles, with quality parts and work done to spec.
Honest, upfront pricing
- A clear diagnosis and price before work begins
- Repair options explained, not pushed
- Straight answers on what's urgent vs. what can wait
Why St Paul drivers choose Roy's Service
A 4.8-star reputation for honest engine work without the scare tactics. Serving Saint Paul, South Saint Paul, Stillwater, Mendota, Newport.
Book engine service
Noise, leak, or warning light? Call Roy's Service at (651) 776-9494 or book online.
Frequently asked questions
Is it worth repairing my engine?
Often yes — many issues are far cheaper to fix than people fear. We diagnose first and give you honest options. Call (651) 776-9494.
What's that ticking/knocking noise?
Could be several things, from low oil to a worn component. Get it checked before it gets worse.
My engine is overheating — can I keep driving?
No — overheating can cause serious damage fast. Pull over and call us.
How much will engine repair cost in St Paul?
It depends entirely on the cause, which is why we diagnose and quote upfront before any work.
Do you do major engine work?
Yes, and we'll always explain the cause and options clearly before you commit.
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Engine Repair across our service area
Ready to get your car looked at?
Schedule online or call (651) 776-9494.
