[Vwdiesel] VE pump problem
Doug Ferguson
hwy9fergs at comcast.net
Mon Jan 19 12:12:43 PST 2015
Sandy, I would suspect air in the pump (lost prime from sitting nose up), and perhaps the vane pump inside is marginal, and cannot properly purge all the air out. Do you have a method you've used for priming? If not I can share what I've done in the past. Got to have nothing but fuel in there. Can't think of anything else that would have just happened to occur after parking like that, although it's good to check on what the other guys said as well. Best of luck. Doug Ferguson
----- Original Message -----
Message: 2
Date: Mon, 19 Jan 2015 03:59:39 -0800
From: Bud <budski at gmail.com>
To: sandy cameron <scameron at storm.ca>
Cc: diesel <vwdiesel at vwfans.com>
Subject: Re: [Vwdiesel] VE pump problem
Message-ID:
<CAKdrtMYT-e5aZ=jgHtdrv-6+iL8e=1bnDFm7fYk3vfmw2U_YQA at mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Sandy,
If I remember, I sort of had the same problem one time. When you took the
banjo bolt out, did you inspect the little hole to see if it was clogged?
I had run some filtered WVO in mine and it cleaned things out of my pump so
good it clogged the hole and it restricted the return line.
I've resealed the pump and can't think of anything internal, here's a link
to some pics I took plus a link in the text on how to do the job, maybe a
few pics will jog some collective memories.
Do you work HF?
73 de Bud
On Sun, Jan 18, 2015 at 7:13 PM, sandy cameron <scameron at storm.ca> wrote:
> I can't remember if I have ever asked for help on this forum before, even
> tho I have been here for years.
>
> Cutting to the chase, My trusty, but venerable 1989 1.6 TD has suddenly
> developed a pump problem.
>
> On Friday, 16 Jan, I ventured north west from Stittsville, near Ottawa,
> to Arnprior, about 25 miles NW from here.
>
> The trip was uneventful (except for the arctic temperatures, What a great
> little heater she has!) at speeds around 60 mph.
> A couple of times I found myself creeping above that, and had to ease off
> to avoid velocity taxes eagerly collected by our provincial government,
> who's premier refers to us as "revenue tools".
>
> Arriving at destination, I parked in a steep driveway, nose up, and spent
> an hour delivering an old 2 metre ham rig, setting it up, and making a few
> local contacts.
>
> The owner and I then headed out to a local coffee shop to celebrate. I
> started up normally, backed down the lane into the street, and drove off.
>
> I quickly noticed the car was not behaving properly, it would idle
> normally, and run a street speeds,but topped out at about 2800rpm. (no
> tach).
> The "top-out " felt like fuel starvation.
>
> I made it home at 45-50mph max, on the level and down hill, and struggled
> up the hills at about 30mph. The "fuel starvation was consistent, and the
> speed varied with the load.
>
> My fuel system is plumbed with clear tubing, so the diagnosis developed
> quickly. The filters were all ok and fuel flowed freely right out of the
> OEM filter. Yet, the transfer pump in the injection pump would not suck
> fuel.
>
> As always, with fuel delivery issues, I rigged my specially designed "IV
> drip" apparatus, feeding the pump directly. Even with the supply jug
> elevated above the pump, fuel would not flow.
>
> I cracked the inlet banjo bolt, and fuel gushed out by gravity.
>
> The obstruction or defect is INSIDE THE PUMP!!
>
> It may be mechanical, like a spring or lever in the governor section, but
> that would not affect the fuel flow.
>
> The car had behaved completely normal up to being parked nose-up, and
> went in to the partial fail mode as soon as it was next moved. (an hour
> later)
>
> On the half-hour return journey, it behaved normally, except it could not
> go faster than 50 mph, and drooped on hill ascents.
>
> It was NOT icing or Gelling, because it was thoroughly warmed up to normal
> temperature. and the blockage is internal to the pump, as proved by the
> fuel douche bag.
>
> How does the pump internal pressure control work? is it a bypass return,
> spring control valve?
>
> What could happen in the transfer pump that would cause it to quit from
> being parked nose-up? Or, just being shut off for an hour and then
> re-started?
>
> I have a couple of pumps here I can swap in, but I'm fishing for a
> "simple, stupid" solution.
>
> James, I'm counting on you>
>
>
> _______________________________________________
> Vwdiesel mailing list
> Vwdiesel at vwfans.com
> http://www.audifans.com/mailman/listinfo/vwdiesel
>
------------------------------
Message: 3
Date: Mon, 19 Jan 2015 09:03:09 -0700
From: "Andrew .Libby" <libbybapa at gmail.com>
To: Bud <budski at gmail.com>
Cc: diesel <vwdiesel at vwfans.com>
Subject: Re: [Vwdiesel] VE pump problem
Message-ID:
<CAJmMo+WRmEG0NwxkHuw-LLQceiuygwmLOiDeNB5AzYk5zg5Syg at mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
As mentioned, the most likely blockage would be the tiny screen/orifice in
the OUT bolt. I would check that first. I would also check to make sure
there is not an obstruction in the fuel line that returns to the tank.
There is a 'pressure regulator' at to top of the pump case by the sprocket
and #1 injector. That could also potentially seize although I've never
seen that happen. It may be able to be removed using an open-end 10mm
wrench depending on how it is rotated when tight. Otherwise, a 'special
socket is required. I made my special socket by using a dremel and
chainsaw sharpening bit to grind out 4 of the six flats in a 6-pt 10mm
socket.
On Mon, Jan 19, 2015 at 4:59 AM, Bud <budski at gmail.com> wrote:
> Sandy,
> If I remember, I sort of had the same problem one time. When you took the
> banjo bolt out, did you inspect the little hole to see if it was clogged?
>
> I had run some filtered WVO in mine and it cleaned things out of my pump so
> good it clogged the hole and it restricted the return line.
>
> I've resealed the pump and can't think of anything internal, here's a link
> to some pics I took plus a link in the text on how to do the job, maybe a
> few pics will jog some collective memories.
>
> Do you work HF?
>
> 73 de Bud
>
> On Sun, Jan 18, 2015 at 7:13 PM, sandy cameron <scameron at storm.ca> wrote:
>
> > I can't remember if I have ever asked for help on this forum before, even
> > tho I have been here for years.
> >
> > Cutting to the chase, My trusty, but venerable 1989 1.6 TD has suddenly
> > developed a pump problem.
> >
> > On Friday, 16 Jan, I ventured north west from Stittsville, near Ottawa,
> > to Arnprior, about 25 miles NW from here.
> >
> > The trip was uneventful (except for the arctic temperatures, What a great
> > little heater she has!) at speeds around 60 mph.
> > A couple of times I found myself creeping above that, and had to ease off
> > to avoid velocity taxes eagerly collected by our provincial government,
> > who's premier refers to us as "revenue tools".
> >
> > Arriving at destination, I parked in a steep driveway, nose up, and
> spent
> > an hour delivering an old 2 metre ham rig, setting it up, and making a
> few
> > local contacts.
> >
> > The owner and I then headed out to a local coffee shop to celebrate. I
> > started up normally, backed down the lane into the street, and drove off.
> >
> > I quickly noticed the car was not behaving properly, it would idle
> > normally, and run a street speeds,but topped out at about 2800rpm. (no
> > tach).
> > The "top-out " felt like fuel starvation.
> >
> > I made it home at 45-50mph max, on the level and down hill, and struggled
> > up the hills at about 30mph. The "fuel starvation was consistent, and
> the
> > speed varied with the load.
> >
> > My fuel system is plumbed with clear tubing, so the diagnosis developed
> > quickly. The filters were all ok and fuel flowed freely right out of the
> > OEM filter. Yet, the transfer pump in the injection pump would not suck
> > fuel.
> >
> > As always, with fuel delivery issues, I rigged my specially designed "IV
> > drip" apparatus, feeding the pump directly. Even with the supply jug
> > elevated above the pump, fuel would not flow.
> >
> > I cracked the inlet banjo bolt, and fuel gushed out by gravity.
> >
> > The obstruction or defect is INSIDE THE PUMP!!
> >
> > It may be mechanical, like a spring or lever in the governor section, but
> > that would not affect the fuel flow.
> >
> > The car had behaved completely normal up to being parked nose-up, and
> > went in to the partial fail mode as soon as it was next moved. (an hour
> > later)
> >
> > On the half-hour return journey, it behaved normally, except it could not
> > go faster than 50 mph, and drooped on hill ascents.
> >
> > It was NOT icing or Gelling, because it was thoroughly warmed up to
> normal
> > temperature. and the blockage is internal to the pump, as proved by the
> > fuel douche bag.
> >
> > How does the pump internal pressure control work? is it a bypass return,
> > spring control valve?
> >
> > What could happen in the transfer pump that would cause it to quit from
> > being parked nose-up? Or, just being shut off for an hour and then
> > re-started?
> >
> > I have a couple of pumps here I can swap in, but I'm fishing for a
> > "simple, stupid" solution.
> >
> > James, I'm counting on you>
> >
> >
> > _______________________________________________
> > Vwdiesel mailing list
> > Vwdiesel at vwfans.com
> > http://www.audifans.com/mailman/listinfo/vwdiesel
> >
> _______________________________________________
> Vwdiesel mailing list
> Vwdiesel at vwfans.com
> http://www.audifans.com/mailman/listinfo/vwdiesel
>
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