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!!! URGENT !!! My engine knocking severely!! - Printable Version

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+--- Thread: !!! URGENT !!! My engine knocking severely!! (/showthread.php?tid=5448)



!!! URGENT !!! My engine knocking severely!! - pmj4147 - 03-19-2014

OM662 2.9 with 7.5mm
2Bar boost, TD06 25G

I changed headgasket to new one, And i lowered compression ratio to about 17.5:1

Re assembled, Changed turbocharger.


THEN THE KNOCK STARTED
And it's killing my mental.

It's too severe.


What's a cause of knock????

I added cetane booster to my fuel, didn't work
Then changed IP timing both way....didn't work...

Lowed compression could be a reason???
Or the injector can be a reason???

Please help me..... it's going to kill my engine soon.
I have to stop it.


RE: !!! URGENT !!! My engine knocking severely!! - erling66 - 03-19-2014

Try to loosen one injector line at a time, then you will know if it is an injector. And make a video, put it on youtube with a link here.


RE: !!! URGENT !!! My engine knocking severely!! - john - 03-19-2014

Check your timing. Maybe the chain has jumped on notch during disasembly


RE: !!! URGENT !!! My engine knocking severely!! - hansendk - 03-19-2014

are you sure that your new gasket is for 89 mm pistons and not for 87 mm.

how did you lower the compression machine the pistons or what.