Classic Mustangs List Archive

This read-only message was archived from a public mail list.
Mail From: (email redacted) (Brian Wenyon)

Guys,

Would appreciate some comments/input for my son's 1965 Mustang Coupe,
equipped with a 289 4v.

He loses about a 1/2 gallon every two days or so or approximately every 50
miles. From what we can gather its coming out of the overflow pipe.

His engine has a new radiator cap[16lbs], a new fan, a new radiator, a new
edlebock water pump, new hoses, new thermostat[160F], and new belts.

The only thing we haven't checked yet is the timing and the fuel mixture
adjustments, we plan to do this at the weekend.

Please advise your thoughts or has anybody had a similar experience.

Brian

This read-only message was archived from a public mail list.
Mail From: (email redacted) (Pete Boggini)

Brian Wenyon said:
>
>Guys,
>
>Would appreciate some comments/input for my son's 1965 Mustang Coupe,
>equipped with a 289 4v.
>
>He loses about a 1/2 gallon every two days or so or approximately every 50
>miles. From what we can gather its coming out of the overflow pipe.
>
>His engine has a new radiator cap[16lbs], a new fan, a new radiator, a new
>edlebock water pump, new hoses, new thermostat[160F], and new belts.
>
>The only thing we haven't checked yet is the timing and the fuel mixture
>adjustments, we plan to do this at the weekend.
>
>Please advise your thoughts or has anybody had a similar experience.


When I had a blown head gasket on my '65, it did exactly this. What
was happening was that there was a part of the head gasket that was
allowing combustion pressure into the cooling system pumping it up with
air and pushing out the water. It would fill up my overflow tank and then
just dump out. I confirmed it with a Radiator Pressure Tester on the
radiator cap with it running. The pressure just kept building when it
should level off once it stops heating up.

peterb

--------------------------------------------------------------------------
Peter Boggini
Systems Administrator/Enterprise Desktop Services
E-mail: (email redacted)
Phone: (650)933-6858
--------------------------------------------------------------------------

This read-only message was archived from a public mail list.
Mail From: (email redacted) (Wal Marshall)

Brian,

My first action would be to find out whether the system is being over
pressurised by overheating, or by an engine fault pumping the system up.

A radiator shop should be ale to do a pressure check on the system to verify
whether it is holding pressure or loosing it somewhere. If it is holding
pressure it suggests over heating

If you have a temperature gauge fitted is it tending to run on the high side
or is it running about normal? Assuming it is running normal temperature,
then perhaps an engine gas leak is pumping up the system. Sometimes this can
be verified by running a cold engine with the radiator cap off and looking
for a steady stream of bubbles.

Options I can think of for the cooling system pumping up include a leaky
headgasket, a cracked head or block or a thin spot in a cylinder wall
leaking gas through into the water jacket.

Good luck

Wal Marshall

----- Original Message -----
From: "Brian Wenyon" <(email redacted)>
To: <(email redacted)>
Sent: Saturday, October 12, 2002 11:24 AM
Subject: [CM] Lossing water from the radiator overflow


> Guys,
>
> Would appreciate some comments/input for my son's 1965 Mustang Coupe,
> equipped with a 289 4v.
>
> He loses about a 1/2 gallon every two days or so or approximately every 50
> miles. From what we can gather its coming out of the overflow pipe.
>
> His engine has a new radiator cap[16lbs], a new fan, a new radiator, a new
> edlebock water pump, new hoses, new thermostat[160F], and new belts.
>
> The only thing we haven't checked yet is the timing and the fuel mixture
> adjustments, we plan to do this at the weekend.
>
> Please advise your thoughts or has anybody had a similar experience.
>
> Brian
>
> _______________________________________________
> Classic-mustangs mailing list
> (email redacted)
> mix.twistedpair.ca/mailman/listinfo/classic-mustangs
>

This read-only message was archived from a public mail list.
Mail From: (email redacted) (Brian Wenyon)

Guy's,

Thanks for the input.

In addition we haven't done a radiator pressure check or combustion leak
test yet?

Thanks

brian

-----Original Message-----
From: (email redacted)
[mailtoemail redacted)]On Behalf Of Wal Marshall
Sent: Friday, October 11, 2002 3:48 PM
To: (email redacted)
Subject: Re: [CM] Lossing water from the radiator overflow

Brian,

My first action would be to find out whether the system is being over
pressurised by overheating, or by an engine fault pumping the system up.

A radiator shop should be ale to do a pressure check on the system to verify
whether it is holding pressure or loosing it somewhere. If it is holding
pressure it suggests over heating

If you have a temperature gauge fitted is it tending to run on the high side
or is it running about normal? Assuming it is running normal temperature,
then perhaps an engine gas leak is pumping up the system. Sometimes this can
be verified by running a cold engine with the radiator cap off and looking
for a steady stream of bubbles.

Options I can think of for the cooling system pumping up include a leaky
headgasket, a cracked head or block or a thin spot in a cylinder wall
leaking gas through into the water jacket.

Good luck

Wal Marshall

----- Original Message -----
From: "Brian Wenyon" <(email redacted)>
To: <(email redacted)>
Sent: Saturday, October 12, 2002 11:24 AM
Subject: [CM] Lossing water from the radiator overflow


> Guys,
>
> Would appreciate some comments/input for my son's 1965 Mustang Coupe,
> equipped with a 289 4v.
>
> He loses about a 1/2 gallon every two days or so or approximately every 50
> miles. From what we can gather its coming out of the overflow pipe.
>
> His engine has a new radiator cap[16lbs], a new fan, a new radiator, a new
> edlebock water pump, new hoses, new thermostat[160F], and new belts.
>
> The only thing we haven't checked yet is the timing and the fuel mixture
> adjustments, we plan to do this at the weekend.
>
> Please advise your thoughts or has anybody had a similar experience.
>
> Brian
>
> _______________________________________________
> Classic-mustangs mailing list
> (email redacted)
> mix.twistedpair.ca/mailman/listinfo/classic-mustangs
>

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