Starts runs3-10 seconds cuts off have problem re starting once started will start all day diagnostics show no faults
Looks like you are getting some air in you diesel pump.
whet it sits diesel goes down creating a bubble.
when you start it the bubble goes in, there is when it stalls, and you got rid of the air, then you crank it again and everything ok. because there is no more air in the system.
probably you will have to have the pump serviced to replace all the o-rings and seals, they will re-calibrate it as well.
Had the same problem on my C270. It only seemed to happen on cold winter mornings and was fine all summer. Mercedes replaced loads of stuff under warranty, but it turned out to be some flexible pipes which had gone stiff and were letting air in, and hence the fuel drained back to the tank. It would only restart after cranking for a long time.
Remove engine covers, Pull back the shrouding on the pipe which goes from the fuel filter housing to the low pressure pump ( the one that sits above the main pump. Is there fuel in that pipe at the time which the vehicle fails to start? Replace o-rings on pipes.
Good luck!!!
Carlo@SS
Hello
The
Engine and Automatic Transmission (not applicable to manual
transmissions) in this vehicles drive train are fully
electronically controlled by a computer called the PCM and TCM (Power
Train Control Module, Transmission Control Module). When a problem
like this or other drive-ability related problems occurs the computer
stores a record of the problem (there are of course some exceptions
to this, like the fuel pump, engine coolant temperature sensor and
MAF sensor for instance) in the form of a fault code in its memory,
to read these fault codes you must have the systems memory scanned
with a special tool. Once the fault code(s) are read you then must
perform the appropriate diagnostic testing to find and resolve the
problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED
TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD
EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM. Also always
check fuel pressure for correct spec for your make and engine type.
Hello
The engine
and automatic transmission in this vehicles drive train
are fully electronically controlled by a computer called the PCM
(Power Train Control Module). Whenever a problem like this occurs the
computer stores a record of the problem (there are of course some
exceptions to this, like the fuel pump, engine coolant temperature
sensor and MAF sensor for instance) in the form of a fault code in
its memory, to read these fault codes you must have the systems
memory scanned with a special tool. Once the fault code(s) are read
you then must perform the appropriate diagnostic testing to find and
resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A
TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR
HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM
Hello
The engine in this cars
drive train is fully electronically controlled by a computer called
the PCM. Whenever a problem like this occurs the computer stores a
record of the problem in the form of a fault code in its memory, to
read these fault codes you must have the systems memory scanned with
a special tool. Once the fault code(s) are read you then must perform
the appropriate diagnostic testing to find and resolve the problem(s)
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