Big surprise, the N63 engine has a recall. This time it involves the high pressure fuel pumps. These engines take the 5 bar (about 75 psi) of fuel pressure from the fuel pump inside the fuel tank and turn it into around 50 bar (735 psi) of pressure to operate the high pressure fuel injectors. I really haven't seen many of these pumps fail, though. I have probably replaced only about 3 of 4 of them in the time the N63 has been out. Regardless, they apparently fail, so we are now replacing them. The recall is not for all the N63 engines. It's for vehicles produced from January 1, 2011 to December 1, 2011. The parts, at least where I work, are already available. I did one of these recalls last week. The pumps are really easy to replace and pay well.
That round thing with the metal lines going into it is one of the high pressure pumps. They are located on the top section of the valve cover, above the first two ignition coils.They have one electrical connector, two fuel lines, and two screws that hold them on.
That round thing with the metal lines going into it is one of the high pressure pumps. They are located on the top section of the valve cover, above the first two ignition coils.They have one electrical connector, two fuel lines, and two screws that hold them on.
Here is the view of the pump from the top (left pic) and side view (right). The spring is pushed up and down by the exhaust camshaft, which drives the internal pump mechanism and turns the low pressure into high pressure. So there you have it. If you have a BMW with an N63 produced on 2011, call your service advisor and see if you need to have it done.
Good info, my 650i needs bank 2 hpfp replaced.
ReplyDeleteThen i have to deal with a valve seals recall on my engine. If they are bad, they will most likely replace my engine.