Re: 4KQ Clutch - again

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <36DC9736.2FE0@snet.net> "Christopher P. Locke" writes:

> > I would, on a turbo.  If it decides to go, it goes quickly and it plays
> > merry hell with the mixture settings, quite apart from the noise.

> You got me on this one!  how does the rear main seal affect mixture? and
> where does the noise come from???

Remember I said "on a turbo".  On these cars, most of the time the
main seal acts to keep air out of the engine, not oil in.  When it
goes, it starts to leak air in, especially when the inlet side of
the turbo is in megasuck mode.  In most cases, this air arrives on
the post-mass sensor side, weakening the mixture.  The seal acts like
a woodwind reed and produces a howling noise.

--
 Phil Payne
 Phone: 0385 302803   Fax: 01536 723021
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