Are my injector holes clean enough or not?

[NBurns]

After having removed all 4 of my Injectors from my '55 plate C220 CDI Classic SE estate following a seal and injector bolt/holder failure (Black death situation), I am now almost ready to re install the injectors. However I have been advised that I need to re-seat all my injector holes before re installing the injectors. The attached photos show the current condition of my holes (all numbered for clarity). Can someone please advise whether these need anything more doing to them? I do not mind doing the re seating myself however funds are limited so a reasonable cheap re seating kit will be all I will get because unless I offer to help other Mercedes owners with this problem, I will not have any use for the kit after I have used it.
Oh and suffice to say, the cleanest injector shown was the one that was stuck solid in it's hole and had the worst carbon deposits around it.
UPDATE- @10:28, Just took more photos with my digital SLR. Not brilliant still but slightly better. Will borrow my girlfriend's Samsung phone next.

UPDATE - @11:02, What is it with Samsung cameras on phones?!! Why are they far superior than iPhones or even my Digital Canon EOS500D?!!! New set of photos attached.

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[peternutkins]

They are cleaner than the ones on my C220 and that's running fine now, so I would say yes. I didn't re seat mine, the looked pretty smooth.

Peter

 

[EXMERCTECH]

My opinion
Not clean enough.

 

[NBurns]

My opinion
Not clean enough.

I was thinking that now. Especially with new photos. Showing too much carbon/oil deposits still. Any recommendations for a cheap but effective kit?

 

[Mark A]

If you have a look on eBay and search there are a number of injector seat re-cutting sets. If you do go that route be careful and don’t take too much off.

Others on here have used some fine grade sand paper on a length of wooden dowel.

 

[Cole@MBS]

They need a recut, you will get blow by the seal very soon if you refit them....

 

[NBurns]

They need a recut, you will get blow by the seal very soon if you refit them....

Yep. Thought that. Ordered the kit from Amazon now. £60.


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[Cole@MBS]

Touch of grease on the cutting face, will collect any material!

 

[Craiglxviii]

Touch of grease on the cutting face, will collect any material!

There speaks the voice of experience..!

 

[NBurns]

Touch of grease on the cutting face, will collect any material!

Or use a plugging device and hoover out any debris apparently.


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[Cole@MBS]

Part of the tool uses the injector hole as a guild so you can’t block it off! Hence the reason I advised you use the grease method!

 

[M80]

+1 for the grease dab on the cutting face.
I use a Henry with reducing size of hose / piping taped to the vacuum hose to get down there and suck out any left over debris.
Then, I photograph the cut face like you do, but after cleaning any left over grease that would disguise the finish.

 

[NBurns]

Or use a plugging device and hoover out any debris apparently.


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The Amazon kit seems to show a part that stops any debris going into the cylinder head. So it wasn't me saying that it was the kit contents and the video I watched. Sorry.

 

[Doug1234]

https://www.therange.co.uk/househol...nd-brushes/brushes/my-home-grey-bottle-brush/

When I did an injector on my om642 I used the above to clean the injector nozzle hole out, its a perfect fit and is very well made and the bristles will not fall Out.
The bristles are nylon and have very little give in them, you pull this across your skin and it will graze you very badly.
Don't let the buying price of £1 put you off.

 

[NBurns]

https://www.therange.co.uk/househol...nd-brushes/brushes/my-home-grey-bottle-brush/

When I did an injector on my om642 I used the above to clean the injector nozzle hole out, its a perfect fit and is very well made and the bristles will not fall Out.
The bristles are nylon and have very little give in them, you pull this across your skin and it will graze you very badly.
Don't let the buying price of £1 put you off.

Doh!!! Why didn't you post this before I ordered the kit from Amazon for £60?!!!! :-((

 

[bob 6600]

Bit late to the party but I would also say not clean enough. I didn't cut mine but MBS have probably done 100's of these compared to the 6 on my old car so I would take their advice.

 

[Doug1234]

Doh!!! Why didn't you post this before I ordered the kit from Amazon for £60?!!!! :-((

Its not for cleaning the seat , its used to push through and clean carbon build up out where the injector tip sits. You still need your seat cutting kit

 

[NBurns]

Its not for cleaning the seat , its used to push through and clean carbon build up out where the injector tip sits. You still need your seat cutting kit

Ah okay.


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[NBurns]

Bit late to the party but I would also say not clean enough. I didn't cut mine but MBS have probably done 100's of these compared to the 6 on my old car so I would take their advice.

MBS?!


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[Blobcat]

MBS?!


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Forum supporter Cole@MBS above - independent Mercedes Specialist