Alfa Romeo 
Turbochargers are essential components in many modern vehicles. Not only are they designed to improve engine power and efficiency but they also reduce carbon emissions and can save you money over time.
You need to be able to know if your turbo is not working properly as this can lead to reduced efficiency and can damage other components in your vehicle. This guide takes you through the various checks and observations you should make when testing if your turbo is working.
1. Listen for Unusual Noises
One of the first signs that your turbo might not be functioning properly is unusual noises coming from the engine. When a turbocharger is in good condition, it typically makes a faint whistling sound as it spools up. If you hear a loud, high-pitched whining or a noise resembling a siren, this could indicate a problem with the turbo’s internal components.
A rattling or grinding sound might suggest damage to the turbine or compressor. Listening to the engine while it’s running, particularly during acceleration, can provide valuable clues about the condition of your turbo. Any unusual sounds should be investigated further, as they could indicate that something is wrong.
2. Check for Black or Blue Smoke
The colour of your vehicle’s exhaust smoke can reveal much about the health of the turbocharger. Normally, this smoke should be relatively clean. However, if you notice black or blue smoke coming from the exhaust, it could be a sign that your turbo isn’t functioning properly.
Black smoke generally indicates that the engine is burning more fuel than necessary, which can happen if the turbo isn’t supplying enough air to the combustion process. On the other hand, blue smoke often points to oil leaks within the turbo. If you find yourself in this situation, your turbo likely needs attention.
3. Inspect for Oil Leaks
Oil leaks are a common issue with turbochargers and can be a clear sign that something is wrong. To inspect for leaks, start by examining the turbocharger and the surrounding area under the bonnet. Pay close attention to the connection points where the turbo is attached to the engine and the intercooler.
If you notice oil around the turbocharger or in the intake piping, it could indicate that the turbo’s seals are deteriorating. Leaking oil not only reduces the turbo’s efficiency but can also lead to more severe engine problems. Regular checks for oil leaks can help you identify potential issues early.
4. Monitor Engine Oil Consumption
A sudden increase in engine oil consumption can be another sign that your turbo isn’t functioning correctly. Turbos rely on a steady supply of engine oil for lubrication, but if there’s a problem with the turbo’s seals, it can start to consume more oil than usual.
Monitor your oil levels regularly. If you find that you need to top up the oil more frequently than normal, this could be due to the turbo leaking oil. Over time, this can lead to more significant issues, including damage to the engine if the oil levels drop too low.
5. Inspect for Physical Damage
Sometimes, physical inspection of the turbocharger can reveal obvious signs of wear or damage. Begin by removing the air intake hose and looking inside the turbo. Check the compressor wheel for any chips, dents, or signs of foreign object damage.
Next, gently try to move the compressor wheel. There should be very minimal side-to-side movement and almost no back-and-forth play. If the wheel moves excessively in either direction, this indicates that the bearings or shaft may be worn out, which can severely impact the turbo and how it performs.
6. Keep An Eye On Your Engine Performance
A drop in overall engine performance is often a clear sign that your turbo isn’t working properly. If you notice that your vehicle is slower to accelerate, or if it feels less responsive than usual, this could be due to the turbo not providing enough boost.
Another performance-related sign is a decrease in fuel efficiency. Since turbos help the engine burn fuel more efficiently, a faulty turbo can lead to increased fuel consumption. If you notice that you’re refuelling more often without any changes in driving habits, it might be worth checking the turbo.
Get In Touch
Testing your turbocharger involves a combination of listening and. By following these steps, you can identify potential issues with your turbo before they lead to more serious problems. Whether it’s unusual noises, smoke, or a drop in performance, being aware of these signs can help you maintain your vehicle’s turbo in good working order.
Here at Essex Turbos, we specialise in reconditioned and remanufactured turbos, and we can help you find the right turbo for your vehicle in no time at all. If you have any questions simply get in touch and we are always more than happy to help.