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220 CDI injector seals - Printable Version

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220 CDI injector seals - Benzsc1 - 03-15-2010

I am sure this has already bween discussed but has anyone got a suggested method for fixing the common problem of injector seals (Copper rings) leaking?
I replaced the seals about two years ago there was so much sticky Cr*p between the injectors and the head it took half a day just to clean that all of it was like tar!
Got back from a medium journey where I was pushing on quite a bit and noticed that I have a bad case of lost compression on Cylinder three cause the seal has gone again. Maybe I did'nt do somethiong right the first time round all torque setting etc were applied anyone got a better suggestion?

Si Wink


RE: 220 CDI injector seals - Benzsc1 - 03-22-2010

Hi Chaps hope someone can help here I started the job Saturday morning only to snap the bolt that hold the injector bracket in place does anyone have any tips on how to get around this I was planning to slot a threaded collar in to the hole and use a shorter bolt to hold the injector down?

Si


RE: 220 CDI injector seals - ForcedInduction - 03-22-2010

Sorry, not many CDI owners in the USA.

Use a bit of blue loctite on the bolts to prevent them from backing off.


RE: 220 CDI injector seals - Benzsc1 - 03-22-2010

No Worries mate thanks for reply problem is not with bolts backing out one has snapped so I guess I am just goping to have to Helicoil it but want to perform this with the head in situ.

What sort of stuff do you guys run over there??


RE: 220 CDI injector seals - Riverstick - 12-26-2010

(03-22-2010, 09:06 AM)Benzsc1 No Worries mate thanks for reply problem is not with bolts backing out one has snapped so I guess I am just goping to have to Helicoil it but want to perform this with the head in situ.

What sort of stuff do you guys run over there??

This is a common problem with the CDI's You need to change the stretch bolts when you remove them as otherwise they have a tendancy to shear when they are tightened/loosened in the future. Be very carefyl drilling them out as well as the water galleries are close to the thread hole......not much room for margin of error