As you will know the usual leak down test is just a compression test
with oil injected in the cylinders. This should in theory give the
distinction between leaking valves and worn piston rings (blow-by). Of
course if you pressurize the cylinder with air you could as well inject
oil. How about taking a spark plug and removing the center electrode
somehow, should give a good pressure line adapter...
Gernot
> ----------
> From: Allen Nugent[SMTP:A.Nugent@unsw.edu.au]
> Sent: Tuesday, April 28, 1998 3:27 AM
> To: Gernot Vonhoegen
> Cc: triumphs@autox.team.net
> Subject: RE: Valve clearances - OHC
>
> At 12:08 27/04/98 +0100, you wrote:
> >
> >I think you are VERY optimistic about that. What it tells you is no
> more
> >than the airflow or indeed vacuum, everything else is interpretation
> and
> >has to be taken with a good pinch of ...well you know that.
>
> Gernot,
>
> Point taken. I'd like to get a proper leak-down test, to see if I can
> eliminate rings as a problem (and even find out which valves, if any,
> are
> bad). Can't seem to find anyone with the equipment, however. Maybe I
> should
> make a sparkplug-thread adaptor for a tire hose, and do it myself, at
> the
> local servo!
>
> ("Hey, mate, that air's supposed to go in the TIRES!")
>
>
> Allen Nugent
> Graduate School of Biomedical Engineering
> University of New South Wales
> Sydney 2052 Australia
>
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