Diesel injectors c270cdi

[Patel1]

Hello,
I need some help and advice, I have a "02" plate c270 CDI, its only done 46,000 miles has been regularly serviced by Mercedes. About 3 weeks ago it developed a cold starting problem. I booked it in with Mercedes for a check up and I have been given a bill of £1600 to replace all five diesel injectors. I have argued with Mercedes and have been give a goodwill contribution from Mercedes which means I still have to 1100. I have had to replace the fuel pump about 3 weeks ago as well at the cost of £250. A total bill of £1350 in a space of 3 weeks. Surely this is not normal for a Mercedes of this age and Mileage.

Can anyone given me some information surrounding these injectors and why these might go at such an early stage. Is there a known fault that Mercedes is not admitting too. Can I escalate this any further?

This is my first Mercedes and I am not very happy to say the least.

 

[psmart]

Hello,
I need some help and advice, I have a "02" plate c270 CDI, its only done 46,000 miles has been regularly serviced by Mercedes. About 3 weeks ago it developed a cold starting problem. I booked it in with Mercedes for a check up and I have been given a bill of £1600 to replace all five diesel injectors. I have argued with Mercedes and have been give a goodwill contribution from Mercedes which means I still have to 1100. I have had to replace the fuel pump about 3 weeks ago as well at the cost of £250. A total bill of £1350 in a space of 3 weeks. Surely this is not normal for a Mercedes of this age and Mileage.

Can anyone given me some information surrounding these injectors and why these might go at such an early stage. Is there a known fault that Mercedes is not admitting too. Can I escalate this any further?

This is my first Mercedes and I am not very happy to say the least.

Has your car been chipped? If it has, then, from my studies, accelerated injector wear can occur (injector is open longer, into the power stroke, where combustion is taking place).
Dont use a Merc Dealer, find a reputable Mercedes Independent Specialist. You can get the Injectors, brand new for 80 quid each on Ebay, guaranteed. Merc Dealers are a waste of space in my opinion, they think your loaded and give you bad service (aka rip you off).
Also, sounds like they didnt know the F* what was wrong with your car, so just replaced parts, ie. fuel pump requiring replacement.
Have you still got the cold start problem?

 

[television]

Having just been on a lecture on Common rail systems (this afternonn) I would like to look a few things up and comment later. No one at the lecture replaces thwm,they are sent away to be cleaned and programe.

malcolm

 

[Patel1]

Has your car been chipped? If it has, then, from my studies, accelerated injector wear can occur (injector is open longer, into the power stroke, where combustion is taking place).
Dont use a Merc Dealer, find a reputable Mercedes Independent Specialist. You can get the Injectors, brand new for 80 quid each on Ebay, guaranteed. Merc Dealers are a waste of space in my opinion, they think your loaded and give you bad service (aka rip you off).
Also, sounds like they didnt know the F* what was wrong with your car, so just replaced parts, ie. fuel pump requiring replacement.
Have you still got the cold start problem?

Hello Psmart thanks for responding, No the car has not been chiped, I am a basic user, car is used to drop the kids to school and the wife takes it to work, it is a simple as that. I agree Merc Dealers are an absolute rip off, and I agree they dont know what the F* is wrong so they have just replaced the parts. The car is now fixed but I want to get to the bottom of this. This whole episode has left me very bitter with Mercedes. They have not given me the old injectors back, they told me they need to be sent back to Mercedes for testing.??? Is this correct is or are they just trying to pull the wool over my eyes. Any advise will be greatly appreciated

 

[Patel1]

Having just been on a lecture on Common rail systems (this afternonn) I would like to look a few things up and comment later. No one at the lecture replaces thwm,they are sent away to be cleaned and programe.

malcolm

Hello Television,
Thanks for responding, any advise will be greatly apprciated, the injectors have now been replaced and the cold start problem seems to have been resolved, but I have been ripped off here, good and proper so, any advise will be greatly appreciated. They have not given me the old injectors back they told me that they have to be sent back to factory for testing. Not sure if they are trying to pull the wool over my eyes.

 

[dava]

MB have a problem with injectors and they do change them under warranty depends on the part no. It would probably be only one injector that was gone as if it was more it probably would not start. Dealers should have the kit to test the flow rate and determine which one is open and not pressuring, but they fit a set to cover their bums I'm affraid and yes you can get them overhauled but it's unlikely a main dealer would take this option.

 

[Parrot of Doom]

Hello Psmart thanks for responding, No the car has not been chiped, I am a basic user, car is used to drop the kids to school and the wife takes it to work, it is a simple as that. I agree Merc Dealers are an absolute rip off, and I agree they dont know what the F* is wrong so they have just replaced the parts. The car is now fixed but I want to get to the bottom of this. This whole episode has left me very bitter with Mercedes. They have not given me the old injectors back, they told me they need to be sent back to Mercedes for testing.??? Is this correct is or are they just trying to pull the wool over my eyes. Any advise will be greatly appreciated

Those injectors belong to you. Insist they give them back. If they don't, threaten them with a court action.

Honestly, unless some part of the invoice for the work says otherwise, they have no right to hold those injectors.

 

[psmart]

MB have a problem with injectors and they do change them under warranty depends on the part no. It would probably be only one injector that was gone as if it was more it probably would not start. Dealers should have the kit to test the flow rate and determine which one is open and not pressuring, but they fit a set to cover their bums I'm affraid and yes you can get them overhauled but it's unlikely a main dealer would take this option.

My Carsoft software will analyse injectors very well and identify bad culprits. You can also program flow rates, so that if you change a single injector, you can map its flow rate into the others. Merc replacing all 5, especially when they have the superior Star software have no excuse. Sounds very much like theyve tried it on, or there a bunch of idiots and need to be named and shamed.

As per Parrot, if the injectors are not sold as an exchange item, they are yours. Even if they are exchange, they should have given you the option to make the decision. I have most of the parts that were replaced on my ML by garages in my garage, for interest and just in case.

 

[dava]

Sadly star diag dont spot the dodgy injector it only shows a fault code on the pressure rail, you need a 611 589 04 21 00 which measures the amount of fuel delivered to each injector. By using this method you can eliminate which one it is. At £500 a shot we only fit whats req.

 

[psmart]

Sadly star diag dont spot the dodgy injector it only shows a fault code on the pressure rail, you need a 611 589 04 21 00 which measures the amount of fuel delivered to each injector. By using this method you can eliminate which one it is. At £500 a shot we only fit whats req.

Thats bad, Carsoft shows you the volume delivered and the open period amongst others. It probably calculates the delivered flow given the flow rate offset code, period open, bar pressure etc. I would have thought Star diagnostics to be a lot better in this area.

 

[dava]

Ha, MB charge £400 a month for the privilge of star diag and you think they rip you off in lab rates.

 

[television]

The space here is too small to cover all of whats involved here.
Common rail systems run at around 280 bar peesure in order to atomise the fuel fine enough to pass through the 0.02mm gap when the injector opens.

One thing you cant do is to interchange injectors in order to find the faulty one as they are coded to the ecu that opens them, if you do inter change you will have 2 cylinder incorrect. The normal is to identify the faulty one with the correct diagnosis tool, send it away and it will come back with a code the you put into the ECU.
Cleanliness is the main reason for failure, using the incorrect or cheap filter can collaspe causing deverstation in the system, the return to tank part must be working correct. A sprinter at 70 mph on the motor way returns 70-90 liters per hour back to the tank.
Very sad that you have been had, get the injectors back, they are worth money. never in a million years can you have them all fail.

It reminds me of the drivers seat that did not function when it went to MB
"yes sir that will be 1 memory pack,new switch unt for door,new wiring harness,and 4 new motors, that will be £974 thank you".

Malcolm