Oil Leaks

[blank]

Netters,

I've replaced my oil cooler tubes and hoses and have been battling oil leaks
ever since. The new tubes are stainless and the hoses are braided stainless
over teflon. I reused all the OEM brass fittings. I've tried the Parker
copper sealing washers as recommended by Cinnabar and have gotten it down to
just two leaks.

The first is the return line from the radiator. I've retightened it twice
and slowed it down greatly, but now I'm concerned that if I go any farther
I'll overtighted it and damage either the hose end or the radiator fitting.
Any advice on how much torque either can take? I'll take that connection
apart this weekend and replace the sealing washer with another to see if
that helps.

The second is at the oil filter. I'm hoping it's a bad filter(replaced at
the same time I replaced the tubes and hoses), but in 30 years of wrenching
on my own vehicles, I've never gotten a bad filter before. So, I'm
beginning to suspect a problem with the adaptor. Are replacement adaptors
available? I've seen similar pieces in Jegs and Summit Racing catalogs -
are these compatible? I'll likely pick up a new filter this weekend, but if
that doesn't fix it, then I'm taking a hard look at that adaptor. BTW, I
also replaced the gasket above the adaptor when I did all this and the leak
doesn't appear to be coming from the top of the adaptor.

TIA,
Patrick

 

[ron & gina]

> The first is the return line from the radiator

Hi Patrick,

You know I'm new to the sweet GMC & GMCNET, But I always thought the
fittings oil/tranny to radiator where of the flared type fittings? Which
inturn does not require much torque to seat, If leaking from hose connection
at radiator then the seats has to be scratched, When hose fittings are
apart, I wipe off fittings m/f with clean rag wipe finger and run finger
around seat surface to feel for scratches on surface of both ends should be
silky smooth (watch the inside ends of flair tho). Or if hose/connector,
guess just bad/worn fittings. Or bad hose new or old. Should show traces
from where leak starts.
But mainly if it is flared fittings it should never have to be over
torqued. But even if new some could have small amount of seepage (on hose)
and be OK, No quick drips tho.

> The second is at the oil filter
Same with oil filter/adapter. Should be smooth on four ends. Oil gasket
and hand tight . It will seal, Or scratches/cracks are present.

Know you know all of this, just trying to help

Ron&Gina
73 Pumpkin-Rose
Ft. Mohave, AZ.

- ----- Original Message -----
From:
To:
Sent: Friday, June 02, 2000 5:00 AM
Subject: GMC: Oil Leaks

> Netters,
>
> I've replaced my oil cooler tubes and hoses and have been battling oil
leaks
> ever since. The new tubes are stainless and the hoses are braided
stainless
> over teflon. I reused all the OEM brass fittings. I've tried the Parker
> copper sealing washers as recommended by Cinnabar and have gotten it down
to
> just two leaks.
>
. I've retightened it twice
> and slowed it down greatly, but now I'm concerned that if I go any farther
> I'll overtighted it and damage either the hose end or the radiator
fitting.
> Any advice on how much torque either can take? I'll take that connection
> apart this weekend and replace the sealing washer with another to see if
> that helps.
>
. I'm hoping it's a bad filter(replaced at
> the same time I replaced the tubes and hoses), but in 30 years of
wrenching
> on my own vehicles, I've never gotten a bad filter before. So, I'm
> beginning to suspect a problem with the adaptor. Are replacement adaptors
> available? I've seen similar pieces in Jegs and Summit Racing catalogs -
> are these compatible? I'll likely pick up a new filter this weekend, but
if
> that doesn't fix it, then I'm taking a hard look at that adaptor. BTW, I
> also replaced the gasket above the adaptor when I did all this and the
leak
> doesn't appear to be coming from the top of the adaptor.
>
> TIA,
> Patrick

 

[tim dawson]

I agree with this. I also put a set of the stainless hard lines and braided
hoses on, and had no problems with leaks whatsoever, and all I did was to
clean the fittings before mating, just as Ron has described. No leaks
whatsoever. If you have washers in flared fittings, that would be certain
death! If these are (as they sound like) JR Slatens parts, then the fittings
definitely do NOT use any kind of washer - they seal metal to metal!

- - Tim

> > The first is the return line from the radiator
>
> Hi Patrick,
>
>
> You know I'm new to the sweet GMC & GMCNET, But I always thought the
> fittings oil/tranny to radiator where of the flared type fittings? Which
> inturn does not require much torque to seat, If leaking from hose connection
> at radiator then the seats has to be scratched, When hose fittings are
> apart, I wipe off fittings m/f with clean rag wipe finger and run finger
> around seat surface to feel for scratches on surface of both ends should be
> silky smooth (watch the inside ends of flair tho). Or if hose/connector,
> guess just bad/worn fittings. Or bad hose new or old. Should show traces
> from where leak starts.
> But mainly if it is flared fittings it should never have to be over
> torqued. But even if new some could have small amount of seepage (on hose)
> and be OK, No quick drips tho.
>
> > The second is at the oil filter
> Same with oil filter/adapter. Should be smooth on four ends. Oil gasket
> and hand tight . It will seal, Or scratches/cracks are present.
>
> Know you know all of this, just trying to help
>
> Ron&Gina
> 73 Pumpkin-Rose
> Ft. Mohave, AZ.
>
> ----- Original Message -----
> From:
> To:
> Sent: Friday, June 02, 2000 5:00 AM
> Subject: GMC: Oil Leaks
>
>
> > Netters,
> >
> > I've replaced my oil cooler tubes and hoses and have been battling oil
> leaks
> > ever since. The new tubes are stainless and the hoses are braided
> stainless
> > over teflon. I reused all the OEM brass fittings. I've tried the Parker
> > copper sealing washers as recommended by Cinnabar and have gotten it down
> to
> > just two leaks.
> >
> . I've retightened it twice
> > and slowed it down greatly, but now I'm concerned that if I go any farther
> > I'll overtighted it and damage either the hose end or the radiator
> fitting.
> > Any advice on how much torque either can take? I'll take that connection
> > apart this weekend and replace the sealing washer with another to see if
> > that helps.
> >
> . I'm hoping it's a bad filter(replaced at
> > the same time I replaced the tubes and hoses), but in 30 years of
> wrenching
> > on my own vehicles, I've never gotten a bad filter before. So, I'm
> > beginning to suspect a problem with the adaptor. Are replacement adaptors
> > available? I've seen similar pieces in Jegs and Summit Racing catalogs -
> > are these compatible? I'll likely pick up a new filter this weekend, but
> if
> > that doesn't fix it, then I'm taking a hard look at that adaptor. BTW, I
> > also replaced the gasket above the adaptor when I did all this and the
> leak
> > doesn't appear to be coming from the top of the adaptor.
> >
> > TIA,
> > Patrick
>
>
>

- --
================================================================================
Tim Dawson (tadawson) Owner/Engineer
TPC Services Bellnet: (972)-221-7385
Lewisville, Texas 75067 FAXnet: (972)-221-0393
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