replacement of valve stem seals and springs

[aanssi]

replacement of valve stem seals and springs for mazdaspeed 6

I would have asked if anyone has experience with this? How many hours of work does it take approximately? I was thinking of cleaning the valves of deposits at the same time and wondering if it would have been a good idea to replace the seals/springs in question at the same time. The car has about 180k miles. What else is worth replacing at the same time when the valve cover has been opened? thanx.

 

[Awafrican]

have you done a leak down test? I wouldn't be going to replace them just for the sake of replacing them.

if you're concerned do a leak down test and go from there otherwise just clean your intake valves, you don't take your valve cover off to do that.

 

[Awines2326]

Are you upgrading to stiffer springs? If not I doubt there is a reason to change them. Leakdown test to determine if the seals would be necessary as well. Intake valve cleaning and injector cleaning make a massive difference. And if you fail the leak down test I would suggest cleaning the valves before assuming it's your seals because it's most likely caused by an inability to properly seal the valves due to carbon buildup.