Why is my car blowing smoke from the exhaust?
The colour of the smoke tells you a lot. Blue smoke is burning oil; white smoke that doesn't clear usually means coolant getting into the engine; black smoke is too much fuel. A thin white vapour on a cold morning is just condensation and normal — anything thicker or constant is worth getting checked promptly.
The most common causes
Worn valve seals, piston rings or a PCV fault let oil into the burn, often on higher-kay engines.
Blue smokeThick white smoke that smells sweet points to coolant entering the engine — often a head gasket.
White, sweet smellA rich fuel mixture from a sensor, injector or air fault burns black.
Black smokeOn turbo engines, failing turbo seals push oil into the exhaust — a specialty job.
A light white puff that clears as the engine warms is condensation, and completely normal.
What it costs in Sydney
| Mobile diagnostic | $129 |
| Repairs (engine / turbo, photographed) | Quoted on inspection |
Get it diagnosed — in your driveway.
We read the codes, check compression where needed, and tell you exactly what's burning — with a fixed price to fix it.
Common questions
Blue is burning oil, white that doesn't clear is usually coolant, and black is too much fuel. The colour points us to the cause before we even open the bonnet.
Yes — a thin white vapour that clears as the engine warms up is just condensation. It's thick or constant smoke that needs checking.
Yes — we scan it, check compression where needed, and quote the repair, all in your driveway.