From: Patrick Jankowiak (eccm@swbell.net)
Date: Tue May 27 2003 - 19:36:00 PDT
I don't like the sound of that.. but I may have to face it. It will be
a trip to the diesel mechanic as I can't change the head myself.
$$$$$
Where does this gas emit from on the head-block area? I can get a
copper tube and a length of hose and listen along the gap, maybe
verify this.
JJ&A wrote:
>
> If you described it more as a chirping sound, I would tell you that it is
> the warning sound (deliberately designed that way) of your head gasket about
> to go. If the fire ring erodes through with age, it will pressurize the head
> gasket area and make a chirping sound in a slot in the gasket. It does sound
> a bit metalic, though.
> Check the compression. Should be 325 PSI when new. A little less is ok. I
> made up an adapter out of an old injector and hooked it to an automotive
> compression gauge that only went to 300 PSI. It just barely pegged, so I know
> it's right up there. A failed head gasket fire ring will drop the
> compression down to 100 PSI or so.
> My deuce made this sound when I got it and it lasted about 1,000 miles
> and then lost all compression on 2 cylinders. Rebuild time. This is a
> built-in warning signal.
> Anyway, that is how it was explained to me by a grizzled, old deuce
> wrench.
> Jim
>
> Patrick Jankowiak wrote:
>
> > I have noticed a high pitched metallic 'tapping' sound coming from the
> > upper rear area of the LTD-465. This can be heard better when under
> > load, and subsides when coasting. It is more audible in the cab, than
> > when leaning over the engine.
> >
> > Could this be an exhaust leak at the exh. manifold or at the gasket
> > after the turbo where the flex pipe connects to the exhaust pipe? I
> > would think that a pushrod or lifter would tap equally all the time
> > regardless of load -just like a car.. Very strange, no real symptoms..
> >
> > Deuce gonna blow up sir?
> >
> > SGT PJ
> >
> > ===Mil-Veh is a member-supported mailing list===
> > To unsubscribe, send e-mail to: <mil-veh-off@mil-veh.org>
> > To switch to the DIGEST mode, send e-mail to <mil-veh-digest@mil-veh.org>
> > To reach a human, contact <ack@mil-veh.org>
This archive was generated by hypermail 2.1.4 : Sat May 07 2005 - 20:20:33 PDT