Quote:
Originally Posted by vintage42
Is this only on the 135 which has the higher pressure direct injection (vs the 128 with port injection)?
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Yes, regular fuel injection operates around 4-6 bar, direct fuel injection systems operate up to 200 bar. One thing I find funny, Volkswagens 2.0L turbo 4 (which has won numerous awards) has direct injection, but there is no sign of premature fuel pump failure in those cars. I find it odd because neither BMW or VW make fuel pumps, the likely are both buying from the same supplier in Germany like Siemens VDO.
Here's a BMW relevant press realease from Siemens VDO
http://www.siemensvdo.com/press/rele...0604_002_e.htm
For those who don't know, 1 bar is about 14.5 psi. Unless you're Irish.