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Old 01-25-2013, 04:20 PM
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Join Date: Jan 2013
Posts: 46
Looking at buying E320cdi with engine codesP0278 and P0306

Could these codes mean alot of trouble down the line? I dont mind putting in some money to fix but do not want to deal with any engine breakdown. Could the injector stop working and what I read wash down the cylinder and perhaps crack the piston?

Could this be a simple fix?

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Old 01-25-2013, 05:11 PM
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Join Date: Dec 2003
Location: Metro Detroit, Michigan
Posts: 17,357

P0278 - Cylinder 6 balance fault.
P0306 - Cylinder 6 misfire detected.

Some Possible issues:
* Bad injector.
* Valve damage.
* Hydraulic Lifter/rocker/cam damage.
* Cylinder head gasket damage.
* Cylinder head damage.
* Piston and/or cylinder damage.
* Piston ROD damage.

Washing the cylinder - piston is not possible, diesel fuel is OIL.


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