Quote:
Originally Posted by Jffeijao
This has been done. Many EGR recalls and an SIB on intake clean up have been released. Issue is caused by low fuel quality allied with very tight NOx emissions limits in US.
All the discussion about alternatives to stop CBU are measures to throw in the atmosphere the un treated diesel burn by products. They are all against the law.
The reality is: all direct injection engines require carbon build up removal as preventive maintenance. With the low grade US fuel some applications will require a smaller interval between clean ups.
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your last statement is spot on, I don't mind CBU so much, it's a problem in all new cars with DI, it's when the CBU messes everything else up...