[DMCForum] Re: Vacuum leaks
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[DMCForum] Re: Vacuum leaks
- From: "cruznmd" <racuti1@xxxxxxxxxxxx>
- Date: Wed, 6 Aug 2003 08:45:28 -0500
I agree about the choice in engine. I'm not exactly a "purist" but I
do intend to keep the engine because that's what was in it from the
factory.
It's not my favorite engine. I was told though, that once you get
them running, if you keep driving it, they're very reliable.
By the way, I was running off of gasoline from the tank, 5 minutes
after I tried the ether. Like I said, starts first time, every time.
--- In DMCForum@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx>
wrote:
> You'll never find them all...
>
> Trust me. Have been chasing them all over mine for a year. Engine
will
> run alright -- just won't idle smooth as silk (until you hit leak
with
> spray solvent of some sort). Started at upper air assembly and am
> working my way down. To date: U pipes, cold start tube, intake to
> heads, injector seals, and valve covers. Latest find is crank seal
in
> timing chain cover.
>
> Buy stock in the company that makes that orange silicone -- I'll
make
> you a rich man.
>
> You might as well know now: you have just gone to a lot of trouble
to
> resurrect a very odd piece of hardware. PRV cut from totally
different
> bolt of cloth. Is no accident Ford Motor Company didn't snap them up
> for its own use. Is certainly functional. Makes a distinctive sound
> that may be integral to DeLo driving experience. Is even fairly
peppy.
> But is 1,000 times more difficult than a 460 (carbureted, please).
>
> Devotees love to claim various advantages of PRV. IMHO biggest
single
> reason DMC used: it was there (already in Europe, where car was
being
> built). Doesn't appear to have made much of an impression on anyone
> other than the French, so perhaps JZD got better deal than
alternative
> blocks. Is really too bad he didn't build a factory in Dearborn
Michigan.
>
> Have fun driving new toy around the parking lot.
>
> BTW: are you running off gasoline yet? Maybe you could run a hose
into
> passenger compartment to keep spraying starting fluid (just kidding.
> Wouldn't you be a sight on Rt 50).
>
> Bill Robertson
> #5939
>
> >--- In DMCForum@xxxxxxxxxxxxxxx, "cruznmd" <racuti1@xxxx> wrote:
> > I don't think anything is stuck. Like I said, as soon as it had
oil
> > it fired right up. I agree with the friction part. I think that's
> > what lagged it out.
> >
> > As soon as it had the micro-layer, watch out...
> >
> > I've already leaned out the co screw. It's much better. I also
> > retarded the timing. It was at 16 degrees. I know I'm going to
have
> > to do this again though.
> >
> > I've found my 1st 2 big vacuum leaks. The CO screw hole and the
plate
> > on the back of the head that keeps the cam in. I warped it
slightly
> > when I was trying to use the sprocket support. I almost broke my
> > timing chain cover like Tim. I stopped in time but still dorked
up
> > that little plate. I'll pull it tomorrow and pound it flat and
slip
> > the new o-ring on it.
> >
> > Then I'll hunt down the others...
> >
> > --- In DMCForum@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx>
> > wrote:
> > > Cylinders are lubricated from below. Can't have oil from above
(like
> > > leaking valve seals). Will foul plugs every time.
> > >
> > > Is it possible your rings are stuck? They must move vertically
in
> > > their grooves to let micro thin layer of oil past. Remember:
water
> > did
> > > puddle on top of pistons while heads were off. Unfortunately
Marvel
> > > Mystery isn't a penetrating oil. Where it excels is finding
nooks
> > and
> > > crannies thicker engine oil is having hard time getting into
> > (usually
> > > because oil galleries/lifters/push rods/etc are full of crap).
> > >
> > > Slow cranking speed may well have been metal on metal contact.
> > >
> > > You need to do compression tests on all 6 cylinders to ensure
rings
> > > survived. If one reads low, may have snapped a ring.
> > >
> > > Just deleted a paragraph about cleaning out engine with diesel
fuel
> > > (flame alert). If your's is stopped up, contact me off list and
I'll
> > > relate experiences.
> > >
> > > Bill Robertson
> > > #5939
> > >
> > > >--- In DMCForum@xxxxxxxxxxxxxxx, "cruznmd" <racuti1@xxxx>
wrote:
> > > > Trust me, if you'd been here, you would have noticed the
instant
> > > > difference in the way the engine sounded just before it
started.
> > It
> > > > was lack of oil pressure, lack of cranking speed and lack of
> > > compression.
> > > >
> > > > The oil in the cylinders is already gone. I hooked up the
fuel
> > system.
> > > > The car starts first time, every time. Like it was brand-new!
> > > >
> > > > I cleaned the spark plugs with a wire brush on a dremel every
> > time I
> > > > fouled them. They are clean.
> > > >
> > > > However, the car is running disgustingly rich and needs to be
> > adjusted.
> > > >
> > > > By the way, the exhaust sounds great. I'm so glad I replaced
all
> > that
> > > > stuff.
> > > >
> > > > --- In DMCForum@xxxxxxxxxxxxxxx, "content22207"
<brobertson@xxxx>
> > wrote:
> > > > > Usually air in oil galleries is quickly ejected out top of
> > heads. Can
> > > > > delay lifters for a second or two (not an issue on your car
I
> > know),
> > > > > but that's about it. Older domestics prime themselves every
> > time you
> > > > > start car.
> > > > >
> > > > > My R30 has a check valve south of filter to keep oil in,
but ran
> > > > > engine 2000 miles with it removed no problem (was afraid I
had
> > > > > introduced trash around pressure sending unit). Included
> > Thanksgiving
> > > > > trip to DC burning straight 30 weight in 28 degree temps.
> > > > >
> > > > > Filling oil filter isn't going to hurt anything (makes heck
of
> > a mess
> > > > > though, eh?), but don't think that was problem. Doesn't
prime
> > pump --
> > > > > 6-9 inches of air back to it. And don't forget all that air
> > rest of
> > > > > the way through engine. Filling filter just gets oil to
metal
> > bits
> > > > faster.
> > > > >
> > > > > Pouring a bunch of oil directly into cylinders is going to
foul
> > your
> > > > > plugs terribly. Doesn't take much residue to stop spark.
And
> > once a
> > > > > plug is fouled, unburned crap in cylinder just builds up
like a
> > > > > rolling stone gathering moss. What do electrodes on those
> > therrible
> > > > > Champions look like anyway?
> > > > >
> > > > > Bill Robertson
> > > > > #5939
> > > > >
> > > > > >--- In DMCForum@xxxxxxxxxxxxxxx, "cruznmd" <racuti1@xxxx>
> > wrote:
> > > > > > I had this thought this morning but was afraid to voice
it
> > lest I be
> > > > > > wrong.
> > > > > >
> > > > > > I put in Marvel Mystery Oil. Good compression. Had no oil
> > pressure
> > > > > > from the oil system. Car started.
> > > > > >
> > > > > > Ok. Oil pressure begets compression. Compression begets
> > combustion!
> > > > > >
> > > > > > So, I primed the oil pump like I said I would. I filled
the
> > > filter to
> > > > > > the brim and screwed it on as quick as I could.
> > > > > >
> > > > > > Like I said people, when the pump is air-bound, prime it!
> > > > > >
> > > > > > I own a running DeLorean!!!!!!!! It ran, and ran hot and
> > > beautiful off
> > > > > > "the can" (ether).
> > > > > >
> > > > > > My oil pressure shot off the scale, and the light went
out.
> > I'll
> > > have
> > > > > > to get a more accurate sender but she runs!!
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