The "black death"!
Discussion
Anyone else had this yet?
Basically, for those lucky enough not to have it happen, it effects the injector seals in most CDI Merc engines, usually it seems the smaller CC ones but may effect all the range.
You will know as the leakage creates a thick gooey (when hot) sludge around the affected injector.
You'll also get a chuffing noise and an odd smell, possibly.
You could take it to a dealer but you'll end up paying a shed load of dosh.
I've just ordered all the tools, injector puller, bolt hole cleaner, and washer re-seater thingymajig.
£200 but that's a snip (if it comes out) compared to dealer or Indy prices
In for a penny etc.
Basically, for those lucky enough not to have it happen, it effects the injector seals in most CDI Merc engines, usually it seems the smaller CC ones but may effect all the range.
You will know as the leakage creates a thick gooey (when hot) sludge around the affected injector.
You'll also get a chuffing noise and an odd smell, possibly.
You could take it to a dealer but you'll end up paying a shed load of dosh.
I've just ordered all the tools, injector puller, bolt hole cleaner, and washer re-seater thingymajig.
£200 but that's a snip (if it comes out) compared to dealer or Indy prices
In for a penny etc.
How much crap is there around the injector? If it's only just started to leak it should be fairly easy to remove. The tricky bit is making sure the seat in the head is nice and clean so there's a good seal when it's all back together. If you're getting the kit from the dealer there will be some little brass plugs with it which go in the stretch bolt holes to keep the s
t out while you clean the goo off. Any crap down the thread might give you problems when tightening the new bolt. There are plenty of how to's on the Mercedes forums on this topic.
I did one on my w210 about eighteen months ago and so far it's been fine. I didn't use the re-seating tool on it as it looked ok after I'd cleaned it. I did use the specific ceramic grease on the injector body when reassembling it though, it makes it easier to remove when it blows again apparently.
I now take the engine cover off every couple of months just to make sure none of the others are leaking
t out while you clean the goo off. Any crap down the thread might give you problems when tightening the new bolt. There are plenty of how to's on the Mercedes forums on this topic.I did one on my w210 about eighteen months ago and so far it's been fine. I didn't use the re-seating tool on it as it looked ok after I'd cleaned it. I did use the specific ceramic grease on the injector body when reassembling it though, it makes it easier to remove when it blows again apparently.
I now take the engine cover off every couple of months just to make sure none of the others are leaking
I had this on a Clk , A inependant garage had replaced a injector 6 months earlier,
I cleaned out the mess with oven cleaner and jizer .
The chuffing injector pulled straight out easy so i thought this is good!
I filled a flat on the old injector bolt to clean out the carbon on the threads, made a seating cleaner out of a bit of wooden dowel and reassembled;
All sounded fine with no chuffing, So luckily gave it a run up the road before putting the cover back on.
On my return i found there was all black oil filling the well up again.
Anyway after washing down again and getting a magnifying glass out that i noticed that the garage must have levered the injector out and cracked the cam cover , So had to replace it as well.
I cleaned out the mess with oven cleaner and jizer .
The chuffing injector pulled straight out easy so i thought this is good!
I filled a flat on the old injector bolt to clean out the carbon on the threads, made a seating cleaner out of a bit of wooden dowel and reassembled;
All sounded fine with no chuffing, So luckily gave it a run up the road before putting the cover back on.
On my return i found there was all black oil filling the well up again.
Anyway after washing down again and getting a magnifying glass out that i noticed that the garage must have levered the injector out and cracked the cam cover , So had to replace it as well.
I had this on a '99 E320 and as said above, it is important to get it done sooner rather than later as the injector becomes virtually welded into the head otherwise. Even then, the garage that did mine had a right old struggle to get it out.
I was told the thing to do is get the engine really hot and then attempt the removal before it all cools down, but don't know how much credence there is to that.
I was told the thing to do is get the engine really hot and then attempt the removal before it all cools down, but don't know how much credence there is to that.
The first sign is smelling fumes inside the car. The second sign is black sludge starting to form on top of the engine - only visible when you remove the plastic cover on top of the engine. The sealing washers are inexpensive. The injectors are VERY expensive, and so is the labour to remove them (a special tool is required). If you leave this long enough it will quietly destroy your engine, wiring, and bank balance. Removal of the cover on top of the engine should form part of bi-yearly maintenance on high-milers. Replacing the sealing washers and renewing any faulty injectors will give your car a new lease of life, and make it go like the proverbial off a shovel :-)
Vantagefan said:
GTIR said:
It is quite common on all Merc CDI engines, not so much the newer ones but they had their own injector problems as I understand it, mostly W210/211.
Car has 340k on an 07. (yes, I know!)
I assume you meant 34k!Car has 340k on an 07. (yes, I know!)
I've since found out that I've got Delphi injectors which are quite rare on this model, usually use Bosch.
I've cleaned all the tar off, it was not that bad, and have decided to let the pro's do it. (Indy)
GTIR said:
Vantagefan said:
GTIR said:
It is quite common on all Merc CDI engines, not so much the newer ones but they had their own injector problems as I understand it, mostly W210/211.
Car has 340k on an 07. (yes, I know!)
I assume you meant 34k!Car has 340k on an 07. (yes, I know!)
I've since found out that I've got Delphi injectors which are quite rare on this model, usually use Bosch.
I've cleaned all the tar off, it was not that bad, and have decided to let the pro's do it. (Indy)
I've got a similar problem, smell in car, loads of "tar" around #2 injector on my 150k 220 cdi, got injector out ok, but whilts cleaning up the mess noted water coming up through the retaining bolt hole. app-arently the previous, and only owner, had taken the car to a merc garage for new injectors a few months before i bought it (last July) they obviously went through the base of the hole into the water jacket.
i intend cutting the bolt slightly shorter and sealing the hole below.
any thoughts?
thanks
Ian
i intend cutting the bolt slightly shorter and sealing the hole below.
any thoughts?
thanks
Ian
Aparently Honda accord seals are the replacements to use.see http://www.mercedes.gen.in/mercedes-diesel-injecto...
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