Rough or shaky idle
Engine feels uneven at the lights.
Car repairsMisfire fix
Ignition system
repairs
A shaky idle, a hesitation when you accelerate or a flashing engine light usually point to a misfire. We find the cylinder at fault and replace the spark plugs, coils or leads causing it.
Time on site~[XX] min
DiagnosisMisfire count
WhereHome or work
About this service
A spark in the right place, every time
Each cylinder needs a strong spark at precisely the right moment. Spark plugs wear, and ignition coils can crack or fail with heat — and when one cylinder misfires, the whole engine runs rough.
Our scanner shows misfire counts per cylinder, so we can pinpoint the problem and replace just what’s needed — or a full set of plugs if they’re at their service interval.
Car repairs · Ignition System
Signs of an ignition fault
Hesitation when accelerating
Power stumbles under load.
Flashing engine light
An active misfire — reduce load and get it checked.
Hard starting
Weak spark, especially in cold or damp weather.
What you get
What’s included
- Misfire diagnosis per cylinder
- Spark plugs replaced and gapped to specification
- Ignition coil or lead testing and replacement
- Coil connectors and boots inspected
- Fault codes cleared and road test
Good to know: If a misfire is caused by fuel or compression problems, we’ll explain what we found and quote the right repair.
Before we arrive
What we need from you
- Make, model and engine size
- Your logbook so we know when plugs were last changed
- The engine cold for spark plug removal
Pricing
Clear, fixed prices
Pick an option to update the estimate in the booking form. Final price confirmed before work starts.
How it works
Three simple steps
Tell us the symptoms
Noises, warning lights, when it happens — photos and videos help.
We diagnose, then quote
We find the cause on site and you approve a fixed price before work starts.
Fixed and road-tested
Repaired where it’s parked, tested, and you pay when it’s done.
FAQ
Ignition System questions
How often should spark plugs be replaced?
It varies a lot — from around 40,000 km for standard plugs to 100,000 km or more for iridium plugs. Your logbook has the interval.
Can a bad ignition coil damage my engine?
Driving with a misfire for a long time can overheat and damage the catalytic converter, so it’s worth fixing promptly.
Do you replace all the coils or just one?
Usually just the faulty one. If your car is high-mileage and the others are original, we may suggest replacing them together.