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Matt, Mechanical Engineer
Category: Mercedes
Satisfied Customers: 539
Experience:  BEng hons Mech engineering, in auto industry 22 years
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a 2006 e 270 cdi has a pre ignition type knocking only when

Customer Question

a 2006 e 270 cdi has a pre ignition type knocking only when it heats up, it is most audible at 1100 rpm, injectors have been replaced, 290,000 kms
Submitted: 5 years ago.
Category: Mercedes
Expert:  Mike replied 5 years ago.

Hello and Welcome to justanswer...

My name isXXXXX happy to help / advise you on this..

Have you replaced the injectors because of this issue you have - or has this come about since?

Were the injectors "new" ?

Exactly what checks / tests have been done so far ?

Do you get any fault lights on the dash at all -?

Does the engine blow excess smoke - and if so, what colour?

Rgds, MIKE...................................