[xj-s] Hissing

Just got home from a night out. The Check Engine FF44 seems to have gone,
which is nice.

After switching the engine off, I got the usual “clicking” of the hot metal
contracting. However, there was also a strange noise. It was every few
seconds, possibly like a dripping frequency, and was a short 1/2 second
noise, sounding like hissing, or acid burning through something. It’s hard
to describe it any more accurately. I had a look on for leaks on the ground
and couldn’t see any. Any ideas?

Sorry for all the questions, but I want to keep the car for a long time and
this means knowing when a major failure is about to occur.

Antony

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At 00:44 2003-05-17 +0100, Antony Gelberg wrote:

After switching the engine off, I got the usual “clicking” of the hot metal
contracting. However, there was also a strange noise. It was every few
seconds, possibly like a dripping frequency, and was a short 1/2 second
noise, sounding like hissing, or acid burning through something. It’s hard
to describe it any more accurately. I had a look on for leaks on the ground
and couldn’t see any. Any ideas?

Most likely, something is dripping and hitting your hot exhaust. Say, oil
at the rear of the cam covers (ref: half moon seals).

Of course, that’s usually accompanied by an oil stench, but if this is the
periodic hiss, you won’t see anything on the ground because its burning off
on the exhaust.

http://jaguar.professional.org/
Sean Straw '88 Jaguar XJ-SC 5.3L V12 (LHD) ‘Black Cat’ 65K
Marin County, California '85 Jaguar XJ-S 5.3L V12 (LHD) ‘Bad Kitty’ 210K
'69 Buick GranSport 455 V8 324K

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Antony,

After switching the engine off, I got the usual
“clicking” of the hot metal
contracting. However, there was also a strange
noise. It was every few
seconds, possibly like a dripping frequency, and
was a short 1/2 second
noise, sounding like hissing, or acid burning
through something. It’s hard
to describe it any more accurately. I had a look
on for leaks on the ground
and couldn’t see any. Any ideas?

Perhaps A/C condensation water or if you drove in the
rain the cowel air intake drain dripping… IMHO it
seems as if you are describing H2O which would not
leave a smell.

Geoff__________________________________
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