Differenzierte Sauganlage - and because German's can't pronounce this either, BMW just took the first two letters from each word and called this the DISA Valve. BMW's engineers discovered that the air path through the engine system has an impact on performance. In an effort to improve performance, BMW released the DISA valve in 1995. The valve is responsible for … [Read more...] about Diagnosing a Failing BMW DISA Valve – Sypmtoms, Problems & Repairs
M50
BMW M50 Common Engine Problems & Reliability Issues
The BMW M50 engine is the successor to the M20, and predecessor to the M52 engine. The M50 was used solely in the E34 520i and 525i, and the E36 320i and 325i. It is a straight six, or inline-6, coming in at either 2.0L (M50B20) or 2.5L (M50B25). In September of 1992, the engine received a technical updated (dubbed TU on the engine code) which added a single … [Read more...] about BMW M50 Common Engine Problems & Reliability Issues