by Lars-Göran Sundblad (Lars » 01 Sep 2003 20:11
I dont think it's a exhaust leak.
After I have adjusted the preload, its much better (more silent) for a while (a few miles) and then the ticking gradually increases and come back. When I then make new adjustments I have allways found at least one of the rockers with excessive lash or no preload, which clerly is responsible for the higher noise.
The pushrods are of the type that you cut at the correct length yourself and then press the cup on. I had to cut more than an inch off, and then machine the cup end tap since the corresponding hole in the rod were slightly conical and thus became to tight when the rod was cut.
So my first thought was that the pushrod ends were not sitting tight to the end of the pushrod itself and then gradually were pressed in when the engine was running... This does however not explain why there is a small ticking sound directly after adjustment.
But I will check your theoris.. Thanks, I'll be back.
By the way, anyone that have experience in "cut to length pushrods"?
/ Lars