OM651 - error P0266 after reinstalling injectors
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OM651 - error P0266 after reinstalling injectors
Hello. After replacing the valve cover and removing the injectors, I get error P0266, the engine runs irregularly and goes into limp mode. Injectors cleaned, gaskets new, correct torque to tighten all. I can't see if something went wrong. Does anyone have an idea for this error? Or is the system still simply full of air? The error is: P0266 - cylinder 2 contrubtion/balance. Thanks in advance for your help!
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Btw I tried starting again this morning and also got error on cylinder 1, same but P0263 code. I keep thinking its air in the system.... i bleeded it by 5 cycles of turning ignition and holding 10 sec im each of position 1 and 2 of key. Is there another way to bleed system 100%?
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OK, usually the 651 injectors should be kept with the nozzles drowned in diesel, as they become blocked in air contact,
Xentry has a procedure for this job by increasing the pressure till the nozzle became free again.
I would let the engine running close to idle till at least the injector will become a little hot, or I would take out and unblock on a special stand on a specialised workshop.
Xentry has a procedure for this job by increasing the pressure till the nozzle became free again.
I would let the engine running close to idle till at least the injector will become a little hot, or I would take out and unblock on a special stand on a specialised workshop.
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Hi all, I am thinkinh I reinstalled the injector without bleeding enough and damaged, or held them too long out in the air and carbon on the nozzles hardened... probably something clogged or seized...
I am looking now to try to regenerate them or at least check them, otherwise I will buy new ones or regenerated ones.
To be sure before I install next set I have questions :
1. How do you bleed them to be sure before starting ?
2. When you clean injecotor bores do you plug the hole ? How do you clean it ?
3. What torque to use when tightening injecotr bolts ? I used for this OM651 engine following : 15Nm + 90 degrees + 90 degrees. (i used a bit less because was going hard, I was afraid to strip the thread....) Do you ave another way ?
4. Do I need to code new or other set of injector immediately before running or Can I install them, start enggine and drive few km for coding to a guy ?
5. Can I code injecotrs somehow easily myself ?
Thanks all !
I am looking now to try to regenerate them or at least check them, otherwise I will buy new ones or regenerated ones.
To be sure before I install next set I have questions :
1. How do you bleed them to be sure before starting ?
2. When you clean injecotor bores do you plug the hole ? How do you clean it ?
3. What torque to use when tightening injecotr bolts ? I used for this OM651 engine following : 15Nm + 90 degrees + 90 degrees. (i used a bit less because was going hard, I was afraid to strip the thread....) Do you ave another way ?
4. Do I need to code new or other set of injector immediately before running or Can I install them, start enggine and drive few km for coding to a guy ?
5. Can I code injecotrs somehow easily myself ?
Thanks all !
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W213 All-terrain
M651 solenoid injectors use return line for bleeding when you play with Ignition On and Off. If you let long enough Ignition On you can "listen" the sound of air going through the lines to the tank.
Do that several times and everything will be ok.
Best way to correctly diagnose or to reset/set or calibrate the injectors is with Xentry. All the routines regarding blending, starting with increased pressure, monitoring or teaching or writing the calibration values are very well explained.
Do that several times and everything will be ok.
Best way to correctly diagnose or to reset/set or calibrate the injectors is with Xentry. All the routines regarding blending, starting with increased pressure, monitoring or teaching or writing the calibration values are very well explained.
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yes, I heard fuel flowing through pipes but i had my injector connected so maybe they ran dry and seized... ? Can you please confirm how to bleed them best ? Install injectors and connect fuel pipes but don't connect them to engine module ? only fuel to let them fill up with air ?
i dont have Xentry so I maintain the question if I install new injectors - can I drive to point where they can code them for me ?
possible to refer to all my questions ? Sorry and thanks for support guys !
i dont have Xentry so I maintain the question if I install new injectors - can I drive to point where they can code them for me ?
possible to refer to all my questions ? Sorry and thanks for support guys !
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Just keep Ignition On till the flow will be smooth. No need to do anything more if all the pipes are correctly connected.
You can drive with a new injector non calibrated, if the engine will run smoothly
You can drive with a new injector non calibrated, if the engine will run smoothly
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this is what i did, i connected all, fuel lines, connectors and i turned ignition 5 times to both positions 1 and 2 and kept on those positions 10 second each.
I heard fuel going through, my friend tells me that this is bad and injectors worked dry for a while and could seize, I probably damaged them myself then...
not better to bleed all fuel pipes first before letting injecotors be connected and run ?
otherwise connect all and keep fuel lines lose on injector ends with injector being unplugged and turn ignition then ? all air would go out until fuel starts coming out, then connect fuel lines to injecotrs and connectors too and only then start engine ?
thx !
I heard fuel going through, my friend tells me that this is bad and injectors worked dry for a while and could seize, I probably damaged them myself then...
not better to bleed all fuel pipes first before letting injecotors be connected and run ?
otherwise connect all and keep fuel lines lose on injector ends with injector being unplugged and turn ignition then ? all air would go out until fuel starts coming out, then connect fuel lines to injecotrs and connectors too and only then start engine ?
thx !
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problem solved, there was simply air in the injectors, took them out and went to company who regenerate injectors. They didn't need to regenerate them only put high pressure throught them and it worked.
i put them back in, bleeded as instructed one by one and works like a charm. thx all
i put them back in, bleeded as instructed one by one and works like a charm. thx all
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before i didnt bleed correctly.
this time connected all injectors to fuel lines but not electric connectors, when turning ignition letting fuel run through lines i loosened each fuel line from the closes to pomp injector to furthest one.
afer air stopped coming out i tightened fuel line. one by one . then connected connectors and started engine. (for bleeding only turning ignition and waiting as fuel rushed through)
this time connected all injectors to fuel lines but not electric connectors, when turning ignition letting fuel run through lines i loosened each fuel line from the closes to pomp injector to furthest one.
afer air stopped coming out i tightened fuel line. one by one . then connected connectors and started engine. (for bleeding only turning ignition and waiting as fuel rushed through)
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Could be also filthy rail and pressure regulator and pressure sensor. I had a situation where i had to take out the rail with the regulator and the sensor. I told to my self why not check those too and the sensor's orifice was clogged.
Am glad that problems solved
Am glad that problems solved
