Originally Posted By: jtfmdyk
Originally Posted By: pbm
I adjusted the valves on my 01' Accord for the first time recently at nearly 90K. A couple seemed a little loose but nothing too bad. How often do you adjust yours?
I had a shop service it at 300,000 and checked them myself at about 350,000. They were a bit tight but I assumed valves only get looser so I left them. Recently I have learned that is not always the case and that they have been known to tighten up in some instances (though it seems more common on sport bikes). That sent me back under the cover in a hurry just to be safe.
At least on most Hondas as well as many other engines, the valves get tighter due to valve seat recession. This effectively makes the valves longer (they stick up further). Leaded fuel may prevent this, but that is something that is gone forever, and besides it may cause other problems and be more trouble than it is worth.
Originally Posted By: pbm
I adjusted the valves on my 01' Accord for the first time recently at nearly 90K. A couple seemed a little loose but nothing too bad. How often do you adjust yours?
I had a shop service it at 300,000 and checked them myself at about 350,000. They were a bit tight but I assumed valves only get looser so I left them. Recently I have learned that is not always the case and that they have been known to tighten up in some instances (though it seems more common on sport bikes). That sent me back under the cover in a hurry just to be safe.
At least on most Hondas as well as many other engines, the valves get tighter due to valve seat recession. This effectively makes the valves longer (they stick up further). Leaded fuel may prevent this, but that is something that is gone forever, and besides it may cause other problems and be more trouble than it is worth.
