Biodiesel Myths: Diagnosing TDI Performance Issues (Part 1)
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Volkswagen TDIs are wonderful vehicles and one of the most popular choices for biodiesel use, but they are prone to several common issues that are often mis-diagnosed or wrongly blamed on biodiesel. Frequently these begin with symptoms of low power and sluggishness. There are a number of possible causes for this typical problem, and none of them are due to biodiesel! Dr. Dan of Dr. Dan's Biodiesel discusses the technical background and typical causes for performance, driveability and maintenance issues in TDIs, and how to cure them.