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if it helps you feel any better, mine does the same too .. exactly.
I checked the plastic bracket for the pipe that passes behind the engine near the turbo..
no luck..
mechanic couldn't trace as obviously I couldn't reproduce it in the garage..
the strength of the ticking noise seems to vary with the torque being taken from the engine,
so it could possibly be the engine twisting a bit on the mountings and something touching
something else.... wish I knew what!
 

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Mine does it too, worse when cold, is it not diesel knock you are hearing? you could perhaps trace it with a stehescope whilst the car is on a rolling road under load...
 

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Could it be cheap crap fuel detonating so bad that the KR sensor can't cope......that's what diesel knock usually is...maybe???
 

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I am very interested in this article, the 300C is the first Diesel car I have owned and I must say that overall it's very good. But.... You can get very paranoid about the noise ( well I do anyway) it makes and it does have a "tick" to it under normal conditions. Sometimes I think the car is quiet as can be and at other times I feel it sounds like an old taxi. The engine of course is making the same noise. Mine has done 92k and is more tickey on start up, but this soon settles down to the usual gruff sound effects you get with this unit. Of course if you have a problem that is another thing. Just something to bear in mind, it's not a Lexus ( thank goodness).
 

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Have had my CRD SRT design since early December.Had done 9.5K from new.and so far is running perfectly.I can also hear a tick,tick noise but from what I gather it seems to be a characteristic of the engine.I am certainly not worried about it.
Can here it most when going along at 30-35 mph and backing off on the throttle,then when I gently press the throttle pedal to accelerate the tick can be heard.Give it a boot full of gas and you only hear a nice deep roar from the engine.
 

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Ha ha, you should come and listen to my Kia Sportage.
The engine is no where near as refined as the Merc unit. (apart from the swirl thing)
Sounds like a tractor at low revs.
Evic showing 57mpg today though, so I can live with that.
 

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Get it sorted ASAP,it was a bad injector ( and probably a defunked knock sensor) that screwed the engine on the Beemer we have in
 

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Discussion Starter #29
i went to a diesel specialist and he said i could keep driving untill it gets worse and then replace them.....it wasnt that bad yet just a light tick when the engine got warm
 

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Trouble is when it gets worse it could be worse than you think,the Beemer one over fuelled cyl 4 and took the big end out......2 weeks waiting for a new engine.....and £4k cost......good job he's got warranty.....he still has to pay about £200 as they won't pay for injector test?? and will only pay half the strip down diagnostics??
 

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Discussion Starter #31
he`s nuts then lol

but this guy is the man when it comes to diesels trust me and he says its the first shot that misses sometimes and pushes it all trough on the secont injection hence the tick.
dont wanna be a smartass at all but i take his word for it when it comes to the diesel stuff
when it gets wors i wil do all 6 but wow those things cost alot

i have to do all 6 he said becasue when i do just one it can effect the other 5 injectors so i rather just wait it out and wel it does not always tick ...today no ticking what so ever.
 

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Doing one won't affect the others as they are coded,when one misfires or whatever he's telling you it doesn't fire down another to compensate,the injector won't open until its told to....it's just a switch,on and off,that's all it is,it has to get messages from lots of sensors to the ECU and then the ECU tells it to open and shut
 

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Discussion Starter #33
ok u just explained something different then he did ....

he said that the commonrail diesel when changing one injector could not that it will effect the other injectors not but overloading them but when the new one is working wel better then the rest the way the engine runs could be affected because the older ones still have the high miles on them

i wil just wait and see what happends when i put in a new injector before doing all 6.

tnx for the help man
 

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No,each injector has its own code and the ECU knows these codes and other sensors like MAF,MAP,knock sensors,oil temp,water temp,in fact everything and all the info the sensors give tell the ECU how much and when to give each injector the right amount of fuel and when to squirt it in,if an injector is ticking its either the seal is leaking and sucking in air or the internal spring of the injector is weak but it won't compensate and put more down another injector...too much fuel will cause big end/little end failure eventually
 

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Discussion Starter #35
tnx for the explenation but that is not what i mean....(wel what the diesel guy means)

when the older injectors start showing wear and i put in one perfect working new injector witch does put it the right amount of fuel then is is possible that u wil notice the less effective older injectors.

i`m not a mecanic hahahahaah but i wil check into changing the one injector soon.

again tnx man
 

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This is going to sound very silly, but may, and I stress may, be worth looking at. When I went to buy my car last year several buyers had walked away from buying it due to a stange ticking noise. I popped the bonnet and smiled to myself. So I offered the guy selling it £500 less due to the ticking being a bit of an unknown thing etc.

When I got home with the car, I went into the garage and got some PVC tape opened the bonnet flipped up the washer refil cap, ran 2- 3 times around filling point, popped the cap back on, started he up and bob was you mothers brother, no ticking noise.

I remember the guy saying something about ' they all make that noise'. Maybe worth a little look?
 

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i know its hard to diagnose this and i do apriciate the help ....i think i wil have to get it checked out.

i wil look into all the tips u guys gave me....hope its something simpel and not a trans problem :(
Sounds like the transmission. If you can put it in neutral while driving and it stops making a ticking noise then that just leaves the problem from the transmission to the driveshaft to the differential. You can almost be positive that it wouldn’t be loose plastic your exhaust, injectors and so on and so forth because the engine is still running With all that equipment still operating in the same controlled Condition as before when driving and the injectors would still be firing even though you’d be in neutral driving down the road so therefore the ticking would still proceed to exist while in neutral
 

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I got the same problem... when I start my car... I hear a ticking noise... sound like it’s from the tran but idk... I did a read on the car and it gave me p0344
 
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