MC -Low oil pressure - Update 4 (oil pump)

[james accordino]

So you're saying that you REALLY do have no oil
pressure.  Something must be drastically wrong.  Mine
are ALWAYS pegged when engines cold, hot or cold
weather.  Even at idle I'm up near 2 bar.  Maybe
someone knows the oil flow path.  You're losing a ton
of oil "volume" somewhere internally if the pressure
drops like that.

Sorry it wasn't the gauge.
Jim Accordino

--- E Bavely <veetesse at hotmail.com> wrote:
> James...
>
> Thanks for the idea.  I actually went out and bought
> a mechanical gauge from
> the local Pep Boys.  It's a SunPro and only cost
> about $11.  I did have to
> buy the additional metric 10mm x 1.0 adapter to go
> in the block but it did
> the trick.  The pressure is the same with the
> mechanical gauge as with the
> electrical ones.
>
> I'm hoping I'll figure this one out soon...
>
> Elliott
>
>
>
>
>
>
> >From: james accordino <ssgacc at yahoo.com>
> >To: E Bavely <veetesse at hotmail.com>
> >Subject: Re: MC -Low oil pressure - Update 4 (oil
> pump)
> >Date: Fri, 29 Nov 2002 13:06:07 -0800 (PST)
> >
> >Did you try putting on a mechanical pressure gauge.
> >The few times I've had vehicles that showed no or
> >abnormally low oil pressure I verified with a
> >mechanical test gauge.  Kind of like a compression
> >tester.  The vehicles always had oil pressure.  The
> >problems were with the sender, wiring or gauges.
> >
> >Jim Accordino
> >
> >--- E Bavely <veetesse at hotmail.com> wrote:
> > >
> > > Hello all...
> > >
> > > So...in efforts to solve the oil pressure
> problem in
> > > my newly rebuilt MC
> > > turbo engine in the 4ktq, I resigned myself to
> > > changing the oil pump with a
> > > known good unit.
> > >
> > > As I said before, the oil pump I took off the
> engine
> > > looked fine when I took
> > > off the endplate, so I was skeptical about
> replacing
> > > it as the solution to
> > > the problem.
> > >
> > > I worked on the car yesterday, got the oil pump
> > > changed and everything else
> > > in place.  Replaced the front crank seal, used
> the
> > > pressure relief valve
> > > from the known good engine, even used the gasket
> > > from the pickup tube to the
> > > oil pump (seemed thicker than the new one I had
> from
> > > the gasket kit).
> > >
> > > I started the car with the best of hopes...oil
> > > pressure was fine when cold
> > > and warming up (as normal) and then... same
> behavior
> > > all over again.  As
> > > soon as the fan cycles, the engine produces
> around
> > > 10 or so psi at idle and
> > > really won't make much more than 20-25 psi when
> > > revving. Oh hell...
> > >
> > > Obviously, the oil pump was NOT the problem.
> Others
> > > had told me that the
> > > pumps never go bad and it would seem they're
> > > correct.  Oh well, I had to
> > > eliminate this from the equation.
> > >
> > > The problem is that I've just about run out of
> > > things to check with this
> > > engine.  I'm going to pull the pan again today
> > > (yeehaw - 3rd time!) and have
> > > a look at the piston squirters just to try and
> > > eliminate them as being the
> > > problem.  Shouldn't be a problem to get to them
> with
> > > the crank out of the
> > > way and the long extension on the
> ratchet...Maybe
> > > I'll do as one lister said
> > > and rig up some kind of test setup to see if
> they're
> > > opening when they
> > > should...
> > >
> > > The saga continues.  This one is really starting
> to
> > > get to me.  I was so
> > > stoked to get the project done and the engine
> > > started after about a year's
> > > planning... On the upside though, I feel pretty
> good
> > > about getting good
> > > experience by checking everything that I can
> think
> > > of.
> > >
> > > Any ideas / suggestions / comments are of course
> > > welcome...
> > >
> > > Elliott Bavely
> > >
> > > 86 4ktq
> > > 88 80 fwd
> > > 83 CGT
> > > 81 Coupe ITB
> > > 83 Rabbit GTI (2x)
> > > etc.
> > >
> > >
> > >
> > >
> > >
>
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