Quote:
Originally Posted by Davidf
If you suspect you have leaking valve seals, you should replace them sooner than later. If you don't, the next issue you will have is plugged secondary air ports which if left plugged for a long time is very difficult to clear.
Currently, my X5 4.8i has 85k miles with no issues. I change the valve seals on my '04 545i at about 125k miles using the AGA tools. It was a very tedious and time consuming repair. I let it go too long and ended up with a plugged secondary air port on the driver's side. AGA's cleaning tool did no good. 3 months of driving with new valve stem seals allowed the oil/carbon build up to burn off and the ports opened up. you might not be so lucky.
After you get to the seals, it takes about 20-30 minutes per seal. So, 32x.41 is 13 hours bending over the fender. Brutal for even the young guys, I bet....sure was for me.
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It is my understanding that 2008 and forward do not have the 2ndary air issues as they are designed differently.
11-13-2015, 08:11 PM
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