RE: Engine Still Knocking 4K q

["PAT MARTIN" <MARDKINS@classic.msn.com>]

Me thinks it should have oil in it.  There is a flat spot built in to the cam 
follower shaft that looks to me like it is there specifically to get oil into 
it.  What would lubricate the piston if it received no oil.  Maybe the writer 
of that post is saying no oil on the other side of the piston.
Pat Martin
864000csq  2 1/2 cat back, H&R-Boge,advanced and loving it.  Drilled and 
stopping it.  Koenig Cobra 16x7 with AVS Intermediates, conversion in 
progress, K&N.
95 subaru legacy 
Bothell, Wa


The Shadow <TheShadow@ConnectCorp.net> wrote:
> 
> David Thoresen was concerned about his engine still knocking.
> 
> Check the vacuum pump by removing it from the block.  Then reinstall it
> without the cam follower.  If the knocking goes away you have oil in the
> vacuum pump.  Carefully take the pump apart, clean it and put it back on
> with the cam follower in place.  You'll be as good as new until the pump
> gets oil in it again.  (usually about a year)
> 
> The Shadow

Really?  I didn't know any of us _knew_ what the failure mode was.  I 
assumed it was some spring inside wearing out, or a seal blowing.  Also, 
another lister was experimenting with turning the spring or spring
holder 
90 degrees or so, thereby tightening the spring and making the noise go 
away.

This is the first I've heard of the pump filling w/oil.  How long have 
we (the q-list) known about this?  Or have we?

If it's true, "You learn something new every day."

Ken