low compression.. all cylinders? - reply to reply to reply
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low compression.. all cylinders? - reply to reply to reply



Hey, Marshall in Minnesota

You are quite right, my mind musta zigged when it shoulda zagged. I meant
to say that any air escaping into CRANKCASE would indicate bad rings. Air
out of intake = leak at intake valve; air out of exhaust pipe = leaking
exhaust valve.

So simple - yet I had to muck it all up ! Sorry ! Glad to see that extreme
cold in your area has not frozen your brain !

John
Sag Harbor NY
11 degrees.


----- Original Message -----
From: "Marshall R Larson" <yelof@xxxx>
To: <chrysler300@xxxxxxxxxxxxxxx>
Sent: Sunday, February 16, 2003 12:46 PM
Subject: Re: [Chrysler300] low compression.. all cylinders? - reply


> John.
>
> Why would air leaking past stuck rings be heard at the tailpipe? Don't
> you mean that if it's not heard at the tailpipe (bad exhaust valves) or
> at the carburator (bad intake valves), then it must be leaking past the
> rings? Please correct me if I am wrong.
>
> Also, are you referring to a "Fat" hammer?
>
> Freezing!!! Most of those commenting about the temperature don"t even
> know what COLD is. Double digits below zero over night and single digits
> above during the day is "just another day" here.
> Cold is 30+ below at night and not warming to zero during the day. I
> have experienced not warming to zero for 30 days strait and not warming
> to +32 degrees for 62 days running. Here we wear more than a T-shirt to
> go to bed!
>
> Marshall in Minnesota.
>
> On Sun, 16 Feb 2003 11:02:18 -0500 John Hertog <crossram@xxxx>
> writes:
> > Mike,
> >
> > I agree with Don. ; the only way to know for sure where the
> > compression is
> > going (leaking) is to put a cylinder at TDC, then put compressed air
> > in that
> > cylinder and listen to hear where it's escaping. Out the tailpipe =
> > rings
> > froze; out the intake or exhaust = bad or frozen valves. Repeat
> > procedure
> > for each cylinder and you will know exactly what you're up against !
> > If
> > coming out intake or exhaust, sometimes rapping the affected valve
> > with a
> > BFH (Big F... Hammer) will unstick it.
> >
> > Look at it this way - things could be a lot worse, you could be here
> > in the
> > Northeast freezing your butt off, instead of in Phoenix working in
> > your
> > driveway in a t-shirt !
> >
> > J.
> > ----- Original Message -----
> > From: "Don Verity" <d.verity@xxxx>
> > To: <Chrysler300@xxxxxxxxxxxxxxx>; <mwl1967@xxxx>
> > Sent: Sunday, February 16, 2003 1:58 PM
> > Subject: Re: [Chrysler300] low compression.. all cylinders?
> >
> >
> > > Hi Mike,
> > > What has likely happened from the long storage is that the rings
> > are
> > > frozen to the pistons. You could try flooding the cylinders with
> > marvel
> > oil,
> > > but it likely needs to come apart. The valves are also likely to
> > be sticky
> > > in the guides and you could cause more damage starting it than
> > it's worth.
> > > The good news is that if it still turns over, it's rebuildable.
> > > 300ly,
> > > Don
> > > ----- Original Message -----
> > > From: <mwl1967@xxxx>
> > > To: <Chrysler300@xxxxxxxxxxxxxxx>
> > > Sent: Sunday, February 16, 2003 7:50 AM
> > > Subject: [Chrysler300] low compression.. all cylinders?
> > >
> > >
> > > > Hi all,
> > > > picked up what looks like is going to be a parts
> > car for my
> > > K.
> > > > The engine hasnt run in what could be decades. The carb was
> > frozen, the
> > > spark
> > > > plugs were missing but the engine wasnt locked up so I thought
> > about
> > > trying
> > > > to start it.
> > > >
> > > > Compression check shows about 30-40 psi in each
> > cylinder.
> > Is
> > > > this abnormality a result of just sitting stagnant for so long?
> > Should
> > I
> > > > waste time with plugs, wires, carb etc and trying to start it or
> > is it
> > > just a
> > > > boat anchor?
> > > >
> > > > Thanks
> > > > Mike
> > > >
> > > >
> > > > To send a message to this group, send an email to:
> > > > Chrysler300@xxxxxxxxxxxxxxx
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