As a new boy please excuse if I have missed a similar thread on the Vanos system but I could not find one.
My story is that just over a week ago whilst happily cruising at 70mph a red warning came on "No oil pressure pull over and stop". Clearly I wasnt going to ignore. I checked the oil level which was Ok at half, but topped up anyway. Still no pressure.
At this stage I would say that this was without any previous warning, there were no odd noises, smells or signs of a leak. It looked like a sudden total pressure loss.
The car was duly trailored back to the dealer. I was hoping that it might just be a sensor but the next day I was told that it was the Vanos pump which had failed and would need replacing. A week later I am back on the road and all seems fine but with a lighter wallet.
Because the pressure drop was sudden I was surprised that it was put down to pump failure which I would have thought would start to loose pressure with a warning light rather than a red danger light. The car is a 2005 with 44k miles and full dealer history. The car had an oil change 1300 miles ago and nothing had indicated then.
On examining the old parts after collecting them with the car it is clear that an internal high pressure hose had failed and was also replaced together with the pump. The pump is an expensive part of the total repair. A pipe bursting fits exactly with the symptoms I experienced.
My questions are:
-Have others also experienced this type of failure on the M6/M5 engine. Is this a known weakness?
-If the pipe fails would it be normal to change the pump as well, even though the pipe is on the outlet of the pump high pressure side and so should not starve the pump of oil.
-Is it reasonable for the dealer to have identified the pipe problem as opposed to pump failure. Because I was interested I did try to find out from the daler exactly what had failed but was told that there was nothing to see when I requested the old parts.
Any views or comments welcome.
My story is that just over a week ago whilst happily cruising at 70mph a red warning came on "No oil pressure pull over and stop". Clearly I wasnt going to ignore. I checked the oil level which was Ok at half, but topped up anyway. Still no pressure.
At this stage I would say that this was without any previous warning, there were no odd noises, smells or signs of a leak. It looked like a sudden total pressure loss.
The car was duly trailored back to the dealer. I was hoping that it might just be a sensor but the next day I was told that it was the Vanos pump which had failed and would need replacing. A week later I am back on the road and all seems fine but with a lighter wallet.
Because the pressure drop was sudden I was surprised that it was put down to pump failure which I would have thought would start to loose pressure with a warning light rather than a red danger light. The car is a 2005 with 44k miles and full dealer history. The car had an oil change 1300 miles ago and nothing had indicated then.
On examining the old parts after collecting them with the car it is clear that an internal high pressure hose had failed and was also replaced together with the pump. The pump is an expensive part of the total repair. A pipe bursting fits exactly with the symptoms I experienced.
My questions are:
-Have others also experienced this type of failure on the M6/M5 engine. Is this a known weakness?
-If the pipe fails would it be normal to change the pump as well, even though the pipe is on the outlet of the pump high pressure side and so should not starve the pump of oil.
-Is it reasonable for the dealer to have identified the pipe problem as opposed to pump failure. Because I was interested I did try to find out from the daler exactly what had failed but was told that there was nothing to see when I requested the old parts.
Any views or comments welcome.
