During development at Revo and through our Global Development Programme, we have come across some issues. These issues have been seen on both the newer generation Euro5 1.4TSI Twincharger engines found in vehicles across the Volkswagen Audi Group. A number of these issues have been addressed by the manufacturer directly. However, it’s not advised that Revo software is installed onto your ECU if your vehicle shows any of issue listed. All issues need to be diagnosed and rectified by a Revo Authorised dealer.
Misfiring when the vehicle is cold or warming up. A factory update has been issued for this fault.
Misfiring due to faulty coil packs. Certain batches of coil packs were recognised as faulty and these would be replaced under warranty by the manufacturer.
Misfiring due to faulty plugs. Advised that plugs are replaced.
Misfiring due to faulty injectors. There was an injector part number change in early 2010, these newer injectors have a more efficient spray pattern to prevent excessive depositing on the piston crown. Injectors were also changed to solve misfire issue along with a factory software update.
Excessive Oil Consumption. Although not officially recognised as an issue, there has been a large number of engines replaced due to excessive oil consumption issues. In some cases, nearly new vehicles have had new piston rings installed by the main dealer.
There have been numerous cases where completely standard vehicles have suffered from misfires and unburnt fuel in the cylinder has caused bore-wash leading to piston/piston ring damage. This is not a full extensive list of ‘all’ problems related to this engine, just a list of potential issues.
Most vehicles have had issues rectified by the main dealer. The biggest concern is excessive oil consumption as it can indicate underlying issues that could cause much more damage at a future date.
Not all vehicles suffer from these issues however it’s very important to be aware of the issues prior to upgrading the vehicle so you can look out for symptoms of any future potential problems. Any issue seen on a standard vehicle will be accentuated if the vehicle is run at a higher level of performance.