As a general rule turbos don’t just fail there is usually an underlying issue, the top 5 contributing factors to a turbo failing are:
Faulty or split intercooler
Faulty or split intercooler hose
Engine related conditions
Interruption or restriction to oil supply
Turbos are quiet often blamed for many vehicle issues such as leaking oil, noisy or squealing sounds, low vehicle power.
Some common issues that are often misdiagnosed to be turbo at fault:
Turbo Leaking Oil – A small amount of oil in the turbocharger is present from when the vehicle is brand new and is not always an issue with your turbocharger.
Noisy or Squealing Turbo – If the noise/squeal comes and goes and is noisier at higher revs and quietens when backed off this will usually be an air pressure or exhaust pressure leak not a turbo problem. If the noise / squeal is constant that is when you might have turbo issues.
Low Power – Many times low vehicle power can be assumed to be caused by low boost however many factors can cause low power in your vehicle. It is best to have your vehicle checked over by someone equipped to diagnose fuel injection and turbo issues to make sure you are in fact replacing or repairing the right part to rectify your low power issue.
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