Simon, when you did the leakdown, you should have been able to detect air
either in the crankcase, which tells you rings/bore, or in the intake or
exhaust, which tells you intake or exhaust valve. John
Simon Sparrow wrote:
> I have a Leyland P76 V8 in my car (bigger version of the Rover). The other
> week I had a leakdown test done. Most of the cylinders were OK (6-14%
> leakage) but two cylinders, numbers 3&4 showed 20&28% leakage respectively.
> The compression on the cylinders ranged from a high of 170psi to 155psi on
> cylinders 3&4.
>
> I did a compression test at home with the engine 3/4 warm and found that by
> squirting some heavy oil down the cylinders bores, I could get the
> compression on the cylinders (including the 'bad' ones) to rise by about
> 10psi.
>
> Can I draw any useful conclusions from this?
>
> I'm wondering whether its worth giving the heads a valve job and possibly
> swapping in a fresh cam.
>
> Any opinions welcome!
>
> Thanks
>
> Simon
>
> > .-->
> Simon Sparrow
> Enterprise Network Architect
> WANG New Zealand
> Ph: 04 382 0239
> Mob: 025 230 8048
> Fax: 04 385 6067
|