Why you should examine the DPF following turbo failure

A build-up of fine soot particulates may be the cause of the problem, MAHLE Aftermarket explains

Why you should examine the DPF following turbo failure
MAHLE Aftermarket.

MAHLE Aftermarket has urged technicians to undertake a thorough check of the DPF when fitting a new turbocharger as soot particulates that occur with combustion may be the cause of turbo failure.

The company also warns that this could also be the cause if performance issues continue after a new turbocharger is fitted or if the new turbocharger fails immediately.

In a statement, MAHLE said: “The particulate filter has a limited uptake capacity and must be regenerated or replaced at specific intervals.

“If this is not done and the DPF exceeds its loading limit, the differential pressure rises.

“This can result in a loss of performance and malfunctions during driving and can even lead to the turbocharger completely failing.

“Exhaust gases are continuously being filtered and if there is a build up of particulates, due to the excessive counter-pressure, the exhaust gases will no longer be able to pass through the DPF unobstructed, which can lead to a penetration of the bearing house, stripping the oil film from the radial bearings.

“This results in increased wear and may even lead to calcination and subsequent breakage of the rotor shaft.

“Coked residue in the oil return line to the oil sump is a clear indication of this damage scenario.

“This clearly shows the importance of checking the DPF before fitting a new turbocharger, as a lack of this simple routine could lead to poor engine performance and dissatisfied customers.”

For more information about MAHLE Aftermarket, call 0845 688 5007 or select ‘more details’ below.

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