On 26 Nov, 17:52, "Barney Rubble" <barney.rub...@[EMAIL PROTECTED]
> wrote:
> This is wrong information. There have been many documented cases
> (www.jag-lovers.org) of tensioners giving out with absolutely no
warning, no
> noise or anything else that might indicate impending doom.
>
> In addition it may cost $1800 to replace the tensioners before they let
go,
> but if you didn't catch them, it will cost WAAAY more, as then engine
may
> well be trashed (depends how many cosgs it jumps). At 90K miles, you are
> living on borrowed time if they haven't been replaced. Get the
tensioners
> replaced with 3rd generation metal ones, and whilst you're there do the
> water pump with a metal impellor and the thermostat. If the car is a
keeper,
> you should do this work. If you plan on selling it soon, then don't
worry,
> it will someone else's problem (although if it was me I would reject any
> potential AJ8 engined jag that hadn't had this work done by now)...
>
> - Barney
>
> Prior owner of an XJ6, an 00 S-type 4.0 with a Nikasil engine (yes
Jaguar
> did fit some S-types with Nikasil engines) an 01 S-type 4.0 and an '05
> x-type, and soon to be owner of an 02 XKR....
>
> "WayneC" <Way...@[EMAIL PROTECTED]
> wrote in message
>
> news:HJudnRG6ZqKY-dXanZ2dnUVZ_oGjnZ2d@[EMAIL PROTECTED]
>
>
>
> >I don't own a V8 Jag, but I've been thinking about it (I have an XJ40
and a
> >V12 XJS).
> > The owner of the independent specialty shop where I have my Jags
serviced
> > told me it is an
> > issue that WILL occur sooner or later in early V8's (not likely prior
to
> > about 50K miles)
> > and that it costs about US$1800 to fix.
> > He says it generally gives ample warning before a catastrophic
failure,
> > that he can listen for
> > a growl at the front of the engine that tells him the failure is in
the
> > early stages.
> > He does not tell his customers to automatically make the change, but
to be
> > aware that
> > it has to be done and budget for it, meanwhile checking for strange
engine
> > noise.
> > He suggested I look for a 2002 model to avoid the problem.
>
> > But, I think the chain tensioner problem was corrected late in the
2001
> > model year,
> > so you might want to check with a Jaguar dealer (or search the
internet)
> > to find out what
> > serial number marked the change, perhaps your car already has the fix.
>
> > I can't help with the other issues, but I'd assume a Nikasil problem
would
> > show up prior
> > to 91K miles; also, if you DO have the tensioner work done, seems
prudent
> > to replace the
> > water pump whilst it's torn apart... chances are the water pump has
> > already been changed
> > considering your mileage.
>
> > Steve Thackery wrote:
> >> I've got a 2001 (UK W-reg) XJ8 3.2 with 91,000 miles on the clock.
>
> >> Of course, I've heard about the risks of the cam chain tensioner
failing
> >> (and I believe there's a water pump weakness, too, is that right?).
>
> >> Can anyone give me an idea of what the actual chances of a tensioner
> >> failure are? I mean, is it pretty well guaranteed to happen to every
car
> >> that doesn't have the new type fitted? Or one in ten?
>
> >> I ask because it's a damned expensive job to get a new one fitted, so
I
> >> need to make a judgement on whether the costs outweigh the risks.
>
> >> Also, do I need to worry about the Nikasil problem?
>
> >> Any thoughts gratefully received.
>
> >> Thanks,
>
> >> SteveT- Hide quoted text -
>
> - Show quoted text -
Does the above apply to a 2000 V8 'S' Type as well?
Richard L
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