2 injector clamp bolts snapped in hole, 2010 Mercedes E350 3.0 V6 . What should I try ?

[DSM10000]

Are the tools easy enough to use, and would tapping at the bolt with masonry nails and a lump hammer work ?
Thanks

This will not work.

You will cause more damage and potentially injure yourself

 

[ALFAitalia]

When that happened to my 2.7 five pot I had to drill it out and tapped it with an 8mm thread.. stock is 5 or 6 I think. A far more sensible size and what they should have been from the factory. Never had an issue with it and was still like that when sold.
Mine snapped on removal (rather than over tightening on fitment) due to being glued in with black death.....no amount of heat helped.

 

[ALFAitalia]

This will not work.

You will cause more damage and potentially injure yourself

It might...depends how deep in the hole the break off point is... if its flush with the surface (unlikely) it should work. The issue os that you have a very small target. Not sure how you could injure yourself tapping a nail with a hammer unless you are a complete idiot!

 

[Petrol Pete]

I find this type of extractor better to use on small bolts rather than the 'screw' type. BUT your target to drill into is small and by your own admission mechanical DIY is not your strongpoint so this is not going to be easy.

Are the bolts by any chance hardened steel ? In which case things are not looking good for a quick DIY.

 

[DSM10000]

It might...depends how deep in the hole the break off point is... if its flush with the surface (unlikely) it should work. The issue os that you have a very small target. Not sure how you could injure yourself tapping a nail with a hammer unless you are a complete idiot!

The OP said "Lump hammer"

I think that we have a good idea as to the skills set there?

 

[audiavant]

The OP said "Lump hammer"

I think that we have a good idea as to the skills set there?

The danger is that Masonry Nails are very hard and can shatter-Safety goggles are a must!

 

[DSM10000]

The danger is that Masonry Nails are very hard and can shatter-Safety goggles are a must!

Very good point

 

[BlackC55]

Get a professional thread restorer to come out to you. It will be expensive but this is the kind of work they do everyday. Don't attempt it yourself. Those bolts are very close to the water jacket.

 

[optimusprime]

A picture would help .

 

[neilrr]

professional mobile thread repairer - Google Search

 

[E55BOF]

KramEkard, get a specialist to do it. He has all the right tools, and knows how to do it; you haven't, and don't. Would you try to take out your own appendix...?

Pound to a penny you'll just make it worse if you try to do it yourself, and you'll still need a pro, only now it will be more of a job. Been there, done that...

You know it makes sense. Just do it.

 

[KramEkard]

Get a professional thread restorer to come out to you. It will be expensive but this is the kind of work they do everyday. Don't attempt it yourself. Those bolts are very close to the water jacket.

I tried it on a vice with the bolt in a plastic dowel snapped inside and I was able to drill through the bolt and unwind it out, I feel like giving it a try

 

[John N]

I tried it on a vice with the bolt in a plastic dowel snapped inside and I was able to drill through the bolt and unwind it out, I feel like giving it a try

A snapped bolt in a plastic dowel is in no way similar to steel bolts snapped off and stuck in a metal block!

 

[ALFAitalia]

No reason it should be stuck....it was only recently wound in, the engine has not been run since and its under no tension. The only issue might be the thread lock they usually come treated with.

 

[Trickythemerc]

I have genuine MB injector bolts in my parts stock and there is no threadlock on them

 

[ALFAitalia]

The ones for my five pot 2.7 Merc engine in my Grand Cherokee came from Jeep with the blue stuff on.....its varies depending on supplier I guess....hopefully the OPs ones have none too....should come out easily if so.

 

[E55BOF]

OP, if you give it a go, I hope it all goes well.

 

[Trickythemerc]

Maybe starting with a small drill in a Dremel would help. The dremel being smaller than a cordless drill would be easier to handle and may allow better vision when drilling.

 

[Flyinspanner]

If you are going to attempt this, buy really good quality drills.
Not cheap hss.

Drill a small pilot hole, then open it up.

Tape up/plug any open injector hole, - you don’t want dwarf in the cylinders….

 

[colinallcars]

If you are going to attempt this, buy really good quality drills.
Not cheap hss.

Drill a small pilot hole, then open it up.

Tape up/plug any open injector hole, - you don’t want dwarf in the cylinders….

It would have to be a really small dwarf!