How water can damage your vehicle How to avoid costly repairs
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How water can damage your vehicle

With this wild wet weather our driving conditions are massively impacted. You surely had to drive through deep puddles especially on left lanes puddling up. So how does water impact vehicles? Its not only dangerous, but it can also ruin your car.


Water, mud and debris can harm vehicle engines, components, electrical systems, bodywork and interiors – so it’s risky driving a flood impacted vehicle.


When water enters the engine bay of a vehicle, by driving through deep puddles, you should be aware that the water doesn’t just necessarily dry out. I can impact by clogging and compromising parts and systems.


Water can also impact the mechanical components of any vehicle such as combustion systems or lubrication in transmission as well as electrical systems including air bag computers.


One of the most critical components possibly impacted by rain or flood water are steering and braking. These components can be comprised if water gets into the fluids and contaminates them. So we recommend to check that they are in working order by simply starting the car and testing before hitting the busy Sydney traffic.


Steering and braking are the most fundamental requirements for driving so, after a flood event, please check that these are still in working order before simply starting the car and setting off.



water in the car

Need quality spare parts and fast service? Want to chat with an expert for technical advice? Call us on (02) 9681 7700 or email

car water

Fuel systems are especially susceptible to water contamination.

Our technicians are experiencing a lot of damaged pumps, injectors, common rail systems, fuel lines, fuel tank and worst case the engine due to water contamination. This issue impacts the way the vehicle performs.


What are the first signs of water contamination?

There are a few signs that indicate you may have a water contamination issue.

  • The engine may sound and run rough or you are having difficulties starting the vehicle. 
  • You may notice the engine lacking power or performance. Water in suspension in burning fuel reduces the amount of energy available and will result in lower horsepower output.  
  • The engine may sound and run rough or you are having difficulties starting the vehicle. Water can also cause your car to jolt, rev or sputter when you accelerate.
  • If you notice an engine light, don’t continue to drive the vehicle, get it assessed by a professional mechanic to avoid an even more costly repair.
  • Your kilometre to fuel ratio can also decrease with fuel that is contaminated with water.

Have a professional check the fuel in your car for water contamination if you notice any of the above signs. It may save you very costly repairs in the long run.


So what is happening? What havoc does water cause in my vehicle?

Water in the diesel causes metal components to rust almost instantaneously due to the high fuel temperature. The high pressures push it then through the fuel system cause fast wear and even damage very quickly.


Do you suspect your vehicle suffering from water impact? Talk to us today about an inspection. Call (02) 9681 7700 or email service@sydneydieselcentre.com.au


We found this pdf from RAQ very useful in providing more detailed information on repairs and checks of water impacted vehicles.


To ensure your safety and avoid causing unnecessary damage to your vehicle, trust a professional mechanic to take care of the job.