Have a om651 that didnt want to start. Since I've hasn't got Xentry I wasn't able to raise the rail pressure above the stated 250 bar ish that is commanded on idle rpm, so here's what I did. Vented the fuel lines one and when it struggled to start I ran it on break clean ( not motor starter ) and a lot of it making the engine rev up and above 4000 rpm for as long as 30 sec, this obviously pushed the rail pressure way over the command value. After this engine ran by it self but very ruff, took it out for a drive more or less flooring it during this time and turned the car off cleared fault codes and now car's running mint.
For me it was enough to just tighten all the bolts around the rocker cover to 9 Nm, and the leak was gone. Some of the bolts wewe completely loose. No wonder they unscrew themselves. with just 9 Nm, and just plastick to keep the tension. Ridicilous!!
I have the same issue i changed the rocker cover gasket at mechanic 2 times now, After aprox 2000 kilometres i notice oil leak again from same area above injector rail line cover. Did you just tighten the bolts up or did you do anything else like Locktite or silicone to prevent this from happening again ?? Any advise would be great
No any gasket maker is used. I recommend to torque the bolts three times. Because you will notice that after tightening all the bolts, center ones will be loose due to different tension caused by rocker cover gasket.
@@b.k.automotiveservices9489thank you Do you know if i should replace the bolts If you know which bolt size or part number And also what torque some say 9 some say 11
Hello. I need help from the translator to be clear. First of all, thanks for the answer. I still have some questions. At first you said in the video that the engine should turn to ventilate. You just mean starter? Then I have to remove the enjector connector or? Doesn't start. Do I have to bleed air on one enjector or just one? ?
1. Loose one injector pipe 2. Crank the engine until you can see the diesel fuel from the loose injector pipe. 3. Tighten the injector pipe 4. Crank the engine until the engine starts * Even though you crank the engine for a long time, the engine won't start if you loosed the injector pipe. Because the common rail system isn't working until reached to certain fuel pressure.
Hello Wider.Sori hope I don't nerf.Try to chamfer for a moment.The car started but now I have the p0087 Wasn't there yet until after the final airing) I thought it was because of air that was still there. And then I opened and closed the injector screws one after the other. The engine became quiet and straight. But it works on the seat. And the engine doesn't start until after 2 organs. Now I don't know. Finally, I've broken something, the skaner doesn't work on mersedes or the pressure in the distributor is always low, which is why the felter doesn't go out. What they think?
Haj.Gute dein video hilfreihe👍Wie lange soll ich laufen lasen motor mit bishen augeschraubte muter an rampen?Wie lange dauert bis luft rauf ist?Danke in voraus✌️
Hi hope you can help iv been told the injectors are problematic getting out or is it just mechanics trying it on as id like to sort my oil leak out from the rocker on my cls 250 but the injector removals the bit holding me back hope you can help
Fantastic Video, thank you for making and uploading this. My Mercedes has the same engine as this (OM651) I had my timing chain replaced a couple of months ago and now my engine leaks oil near the back of the engine after they fitted a new rocker cover gasket. Should the garage cover the cost of repairing the oil leak? I live in the U.K.
@@b.k.automotiveservices9489 I took it in earlier this week. They cleaned the entire engine down. I drove it 11 miles home and the leak is back. I’ll contact them Monday morning
There is one bolt in the aft of the cover, in the middle. Its very difficult to get to. Maybe they saved it for later, since its so difficult, and then forgot it...
You sure this doesn't include the part too? But sounds right, absolutely. Remember. Going to a workshop IS expensive. Taxes, workshop material, wear and tear of tools, "warranty" on the labor, expertise, this all costs money. Then on top of that, the actual labor and parts also costs. Professional craftsmen doing a professional job is EXPENSIVE. But it is a peace of mind for you, having a repaired vehicle. But you feel like you're getting fucked over, just do it yourself.
@@emilmoe92 that's just labour so about 8 hours seems excessive. Seals and new rocker cover is extra £207 so total £792 plus vat on top. This can't be right.
@@chickenpluckerman4890 Well, I personally (i'm a trained Mercedes mechanic) would spend a maximum of 4-5 hours depending on how bad it is. If the injector seals for example are bad, which you have to remove anyway to remove the rocker cover, you have to clean and mill the injector seatings free of debis and replace the injector washers. That alone can take an hour or so to get done properly. If the injectors for example are already leaking exhaust, and has been leaking for a long time, a lot of exhaust debris can build up around the injectors making it almost rock solid. That can take a long time to get clean, not to mention the effort of pulling the injectors out. Injectors can really be quite stuck into their seatings and a nightmare to remove. Then it is the removal of the cover, cleaning the cover surfaces properly, inspecting the surfaces properly, mounting everything back together. When that is said and done, visit another workshop to consult for a better price.
