Signs your engine needs attention
Slow acceleration
The car takes longer to pick up speed.
Rough idle
The engine shakes or hunts at a standstill.
Reduced fuel economy
You're filling up more often.
Common causes of poor performance
| Cause | Fix |
|---|---|
| Worn spark plugs | Spark plug inspection, cleaning or replacement — Denso, NGK |
| Dirty throttle body | Throttle body inspection & cleaning |
| Sensor issues | Oxygen (O2) sensor inspection |
| Diagnostic faults | Diagnostic scan |
| Injector condition | Injector condition check |
Why it matters
- A sluggish engine burns more fuel
- Small faults can become bigger repairs
- A responsive engine is safer when overtaking and merging
How we fix it
Your engine should feel responsive. Our tuning service covers:
- Throttle body inspection & cleaning
- Spark plug inspection
- Oxygen sensor inspection
- Diagnostic scan
- Overall performance check
Questions, answered
Why is my car slow to accelerate?
Common causes are worn spark plugs, a dirty throttle body, sensor issues, diagnostic faults or the condition of the injectors.
Can dirty spark plugs reduce fuel economy?
Yes. Worn or dirty plugs don't burn fuel efficiently, so the engine uses more to do the same work.
Do I need a diagnostic scan?
It's the quickest way to find stored faults, so we start with one before cleaning or replacing parts.