ML270 diesel unidentified T bleed contraption
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ML 270
ML270 diesel bleed valve leaking...HELP please
Please help. I have a strange looking T at the top of my engine and it is the end of a diesel line (it does not circulate). It is fed from a T junction in the diesel pipe between the low to high pressure pump. This valve/ bleed thing is broken and leaking diesel. I need to know what it does and can I just cap it off? Many thanks in advance for your input.
Last edited by ML270 madness; Dec 1, 2014 at 02:04 PM. Reason: no response
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2003 w163 ML270 cdi
Please help. I have a strange looking T at the top of my engine and it is the end of a diesel line (it does not circulate). It is fed from a T junction in the diesel pipe between the low to high pressure pump. This valve/ bleed thing is broken and leaking diesel. I need to know what it does and can I just cap it off? Many thanks in advance for your input.
I snapped mine at the t piece when replacing my thermostat ( very common during this procedure) and had to temporarily bypass that branch with a hose and jubilee clips bridging the hole just leaving a straight through feed from the low pressure pump to the high pressure pump with the branch you are talking about completely disconnected and the car fired up (After a fair bit of cranking) and ran fine for a week before I could buy a proper replacement ( the replacement is a full moulded 3 ended piece with the T piece.
Hope this helps even if it is a little late.
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Joined: Feb 2015
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2003 w163 ML270 cdi
Never posted any pictures before so here goes:
Assuming it works there are pictures of the T piece and the bleed branch when installed on the vehicle, along with pictures of the temporary bypass mod to get the car going after the T was broken during the thermostat change (note this mod could be done better with a straight through adapted and fuel hose but this is all I had at the time.
There are also pictures of the fully molded replacement part (with the part number shown on the bag, and also a picture of the hose retaining clips for under the highpressure pump- worth getting a couple of these before changing the hose as they get brittle and the clip snaps- these are essential to keep the fuel pipes from fouling on the auxiliary belt - only 3 or 4 mm clearance even with the clips.
Hope this works and helps.
Moz
Assuming it works there are pictures of the T piece and the bleed branch when installed on the vehicle, along with pictures of the temporary bypass mod to get the car going after the T was broken during the thermostat change (note this mod could be done better with a straight through adapted and fuel hose but this is all I had at the time.
There are also pictures of the fully molded replacement part (with the part number shown on the bag, and also a picture of the hose retaining clips for under the highpressure pump- worth getting a couple of these before changing the hose as they get brittle and the clip snaps- these are essential to keep the fuel pipes from fouling on the auxiliary belt - only 3 or 4 mm clearance even with the clips.
Hope this works and helps.
Moz
