Could someone tell what this pipe is called

[Dave Richardson]

Whilst changing the thermostat on my w203 220cdi I have accidentally snapped a brittle "T" piece on a fuel pipe, & I'm hoping that someone can tell me what the pipe is & what it's called.

The pipe has a white plastic slide clip to loosen & is fitted to the top of what I think is the fuel pump(black in colour & has 748 CN7 stamped on it) at the front of the engine. The pipe runs down & to the right & front of the engine (when viewed looking front to back of the car ) where there is a "T" piece, the orignal pipe continues behind the drive belt & around the unit where it joins back ito the unit marked 748 CN7;the off shoot of the "T piece goes up to a white coloured valve which is mounted on top of the rail.

Could someone help me please ?

hopefully the attached photo's will appear on this post

 

[grober]

FUEL FILTER,LINES AND THERMOSTAT FUEL INJECTION

no photos

 

[Markedes]

This is quite common when changing the Thermostat. It is probably best to change all three fuel pipes IMO as they get very brittle.

The cost is approx £70 for all three and you will need two clips for the line that goes behind the belt into the fuel pump.

Regards.

 

[Dave Richardson]

Missed Photo's Broken pipe

How this assists someone who may be able to help me

 

[Damogsta]

It's one of the low pressure fuel lines, the bit on the end is a bleed valve.
Seriously if you've gone this far just replace all 3, the ones for my W210 E320 were £85

 

[Damogsta]

There are two pumps in your picture, the aluminium one is the lift pump from the fuel tank, the black one is the high pressure pump to the common rail

 

[grober]

Try this and have a search yourself. Çàï÷àñòè äëÿ Mercedes C 220 CDI | Êàòàëîã çàï÷àñòåé Mercedes, ïîäáîð àâòîçàï÷àñòåé äëÿ ëåãêîâûõ àâòîìîáèëåé Ìåðñåäåñ (ðåãèîí Åâðîïà) ïî àâòîêàòàëîãó.

 

[Dieselman]

There are two pumps in your picture, the aluminium one is the lift pump from the fuel tank, the black one is the high pressure pump to the common rail

The aluminium one is the vacuum pump, not the lift pump.

 

[230K]

The aluminium one is the vacuum pump for your brake servo!!!!!!!!

230k

Whoops Dieselman beat me to it

 

[Damogsta]

Oops, sorry. . . . .

 

[Dave Richardson]

Thanks to all,
Graeme, I wish I could read that link honestly !
I'll likely as not replace all 3 pipes now , but just in case I don't I assume the pipe & t piece I've broken goes for the high pressure pump up to the rail ( it's the one in the photo where the clip is disconnected & has a clearish plastic end

Dave

 

[Damogsta]

I think that one is the return from the rail?

 

[panason1c]

It's one of the low pressure fuel lines, the bit on the end is a bleed valve.

The bit on the end is actually used for a MB plug-in tool to measure pressure at the low pressure fuel pump.

The system is self bleeding.

 

[grober]

Thanks to all,
Graeme, I wish I could read that link honestly !
I'll likely as not replace all 3 pipes now , but just in case I don't I assume the pipe & t piece I've broken goes for the high pressure pump up to the rail ( it's the one in the photo where the clip is disconnected & has a clearish plastic end

Dave

CLICK ON THE 203.006 blue number then click on the + box on the second entry down containing the words OM611 [ THE ENGINE] then select whichever group you are interested in e.g. 07 injection pump then fuel injection system


diagram 1 or 2

navigate back with the " back button" on your browser

 

[Dave Richardson]

many Thanks

CLICK ON THE 203.006 blue number then click on the + box on the second entry down containing the words OM611 [ THE ENGINE] then select whichever group you are interested in e.g. 07 injection pump then fuel injection system


diagram 1 or 2

navigate back with the " back button" on your browser

Graeme, You're a star,many thanks I did as yu suggested & found the part & number

Take care & many thanks of to me local mb stealership on Monday am

Dave

 

[grober]

Graeme, You're a star,many thanks I did as yu suggested & found the part & number

Take care & many thanks of to me local mb stealership on Monday am

Dave

Just get them to double check it against your VIN number when you order it.

 

[Dave Richardson]

ManyThanks to all who have repiled & offered help, especially Grober ( Graeme),who had the patience to teach me how to use the Russian website, I purchased a new pipe today from my local MBstealership at £36 inc vat,Part number is 6120703232 if anyone elsemakes the same mistake as I

Dave