step by step ip pressure

[Firesong]

Needed :)

Is there an easy way to check and adjust IP pressure?
or do I need to take the van in to have this done?

Where is the adjustment for the pressure?

FS

[Erebus]

Needed :)

Is there an easy way to check and adjust IP pressure?
or do I need to take the van in to have this done?

Where is the adjustment for the pressure?

FS

"easy" to do if you know how. Are you really referring to pressure, or to fuel flow adjustment. The fuel flow adjustment screw has a sealed cover to prevent adjustment. CVI adjusted mine, but they strongly recommend not touching it. It really shouldn't need adjustment. Chances are, the problems one is having with the engine is not due to the fuel flow metering.

[marsgal42]

What makes you think this is an issue?

This is specialized work. It requires specialized tools and knowledge.

...laura

[Firesong]

Can't remember the thread but it was in regards to less
power higher up. One suggestion was to increase the pressure a
bit and see what happens:

******************
"As for fuel pressure....I cant find anything on the forum but i
Could easily show you if you are in the area (Lower Mainland).
Basically on the rearward facing portion of your IP there is an
adjusting screw and lock nut. The lock nut is a 14mm and you can
adjust the screw with a standard (flat) blade screwdriver. What
I did was to unlock the nut and adjust (clockwise) 1/4 turn. Take
for a test drive noting performance and watching for black smoke
from exhaust and exhaust temps.
Continue to adjust until the performance "feels" better and the
exhaust smoke and temps are reasonable. "
********************

Just trying to see if there is any more input on this is all.
I can see the logic if the IP is probably in need of a sealkit
and the pressure has dropped. Checking the fuel lines to make
sure there is nothing impeding the flow as well.

I just don't want to go in to a shop and get dinged $300 to
do what I can do on my own. When the time is right I will have
the IP rebuilt. I figure if I can install, replace gaskets, turbos
and other things of the sort including replacing the odd seal
in the IP then I should be able to do a small adjustment. Just
want a little more information on it first so I can decide if and
what should be done.

FS

[Erebus]

"As for fuel pressure....I cant find anything on the forum but i
Could easily show you if you are in the area (Lower Mainland).
Basically on the rearward facing portion of your IP there is an
adjusting screw and lock nut. The lock nut is a 14mm and you can
adjust the screw with a standard (flat) blade screwdriver. What
I did was to unlock the nut and adjust (clockwise) 1/4 turn. Take
for a test drive noting performance and watching for black smoke
from exhaust and exhaust temps.
Continue to adjust until the performance "feels" better and the
exhaust smoke and temps are reasonable."

There is a good reason there is a locking seal over that adjusting screw. And even without the locking seal, it is a b*tch to get at.

Don't fiddle with it. If it isn't running right, get professionals like CVI to work on it. Ya, it will cost you, but at least it will be done quickly, and correctly.

You wouldn't do open heart surgery on yourself, so why do it on your Delica?

[FalcoColumbarius]

Can't remember the thread but it was in regards to less
power higher up. One suggestion was to increase the pressure a
bit and see what happens:

******************
"As for fuel pressure....I cant find anything on the forum but i
Could easily show you if you are in the area (Lower Mainland).
Basically on the rearward facing portion of your IP there is an
adjusting screw and lock nut. The lock nut is a 14mm and you can
adjust the screw with a standard (flat) blade screwdriver. What
I did was to unlock the nut and adjust (clockwise) 1/4 turn. Take
for a test drive noting performance and watching for black smoke
from exhaust and exhaust temps.
Continue to adjust until the performance "feels" better and the
exhaust smoke and temps are reasonable. "
********************

Just trying to see if there is any more input on this is all.
I can see the logic if the IP is probably in need of a sealkit
and the pressure has dropped. Checking the fuel lines to make
sure there is nothing impeding the flow as well.

I just don't want to go in to a shop and get dinged $300 to
do what I can do on my own. When the time is right I will have
the IP rebuilt. I figure if I can install, replace gaskets, turbos
and other things of the sort including replacing the odd seal
in the IP then I should be able to do a small adjustment. Just
want a little more information on it first so I can decide if and
what should be done.

FS

I thought that post was by EricN but when I looked I could only find a turbo boost adjustment post.

I know what you mean about getting dinged, you won't get dinged at CVI, you will just spend a lot of fuel and time getting there. Trust me, the voyage is far more convenient from North Vancouver than it is from Saskabush.

I believe the specialised tools are a wrench, a slot screwdriver and a complete set of fingers.

To start with a caveat: I have not done this ~ "I'm a painter". I have seen it done. It reminds me of a magic trick. You know you can do it, you have seen it done ~ it was done very effortlessly ~ but you just can't place your finger on how it was done. It reminds you of that scene in "The Matrix; Reloaded" when Trinity takes a bullet in the breast as she is falling and Neo flies in at warp speed to catch her ~ but she still has the bullet and dies ~ so Neo "somehow" reaches into her body and tweaks her heart and she starts up again*.... Edwin takes around two hours to remove; strip down; and replace a complete injector pump and he does it with that Cheshire Cat smile at all times.... he's good. So if Edwin can do it in two hours, then two days ought to be enough for you, right?

So... what happens when you make an adjustment to your IP?

It alters the fuel mixture going into your engine. It can give you a little bit more power? Or just a loss of power? It can most certainly affect the temperature of your engine. I would be inclined only to "Fix it", only, if there is something wrong. If it is just a case that you want more power.... I would pull the 4D56TD out and replace it with a Rolls Royce Gryphon Two Stage V12. The fuel consumption will be a little more but ~ by God! You will probably out run police radio waves, let alone the cruisers.

Really ~ it comes down to you, Firesong. This is your dream ~ one man and his Delica. However, being but one datum in that great web of digital improbabilities: I would suggest very small increments. I would think that doing it when the weather is more moderate might be a good idea. I think that I would want to understand the Injector Pump on a more intimate basis, as well...
http://www.socialtext.net/data/workspac ... ystems.pdf

Go to 13B-1

Falco.

*hmmm... Trinity would be a good name for a van.

[Firesong]

I understand what you are saying. All of you.
However you make it sound like I can simply jump into the van
drive to BC and have someone rip it apart. Not to mention
jump back in and drive back.
So easy!
Hmm how many km's is that.. fuel, time, not working.. money...

I will read up on the ip and see what makes it tick.
Sure it's tight in there. What isn't tight in there.
I'm not afraid to touch things, I just want to have the
knowledge before hand rather than afterwards.

The warnings have been given. No more really need to be issued.
If you don't have any help available to give me then please
at least don't go ranting about people doing things they don't know
how to do. Sheesh I sound like a grumpy pants.
I understand things can be complicated but you know, this is
the 'L300 technical' area of the forum. I bet the first person
to rip his turbo off was a newbie too. How about the person
to redo his brakes to larger discs and then told people to do it.
(but not to incase they hadn't before) I was scared of
my first motor I tore about (VW as a matter of fact) then after
about the 5th one it was old hat.

Anyway, I will read over that document and see what's shaking.

btw: 'There is a good reason there is a locking seal over that adjusting screw.'
The locking screw is there so the adjustment screw doesn't move unless someone
wants it to move. Kinda like locking your door as you go out.

and of course I wouldn't do open heart surgery to myself. I wouldn't expect
the Delica to do it to herself either.

FS

[Erebus]

btw: 'There is a good reason there is a locking seal over that adjusting screw.'
The locking screw is there so the adjustment screw doesn't move unless someone
wants it to move. Kinda like locking your door as you go out.

Let me rephrase that. There is a seal over the entire mechanism. And under the seal is the locknut that prevents the adjusting screw from moving. Defence in depth!

I won't flog the dead horse, other than post a photo of just a few of the parts from inside an injection pump, as taken apart by Edwin at CVI.

InjPump4038.jpg (71.26 KiB) Viewed 4504 times

[FalcoColumbarius]

Hey Firesong, I think you ought to do it. I think that the world is going in such a way that we really ought to relearn how to take care of out own selves again. I was thinking of getting an old IP unit to take apart and rebuild a view times, like a puzzle to teach myself to understand the enigma of the IP (I could market that...).

Regarding the cover over the adjustment thingy: I think it was originally put there as an anti-tamper device, so when you took the van back to MMC under warranty and the "seal had been broken" then they would charge you. Not sure about that, just speculating. Either way it's all pretty null and void 17 years later in Canada.

I have been considering adjusting it on the MLB, as well. Mostly to help me to understand the machine better and also to see if I can tweak the fuel consumption because I think I am dumping unused fuel.

Therefore I would appreciate it if you documented your researches and experiences.

Cheers!
Falco.

By the way, as a compliment to Erebus's picture ~ here is a link to when I took the Miss Lil' Bitchi in for a rebuild, with pictures, I hope they help... smiles:
http://www.delica.ca/forum/a-visit-to-c ... -4814.html

[Erebus]

By the way, as a compliment to Erebus's picture ~ here is a link to when I took the Miss Lil' Bitchi in for a rebuild, with pictures, I hope they help

Actually, no, it doesn't help. On my computer, it shows every photo EXCEPT the one of the IP in pieces LOL.

BTW, that anti-tamper cap is a serious b*tch to get off. It took Butch several minutes to remove it, and he knew what he was doing. He then had no trouble getting wrenches on the lock nut and adjusting screw, whereas when I played with it later, I had a hell of a time doing it.

Why was I adjusting it anyway, you might ask? Butch at CVI was adjusting it at sea level, I live at 3500 feet elevation, and these vehicles don't have an altitude compensator. So Butch was guessing at what the right setting would be, and explained how to adjust it.

[FalcoColumbarius]

By the way, as a compliment to Erebus's picture ~ here is a link to when I took the Miss Lil' Bitchi in for a rebuild, with pictures, I hope they help

Actually, no, it doesn't help. On my computer, it shows every photo EXCEPT the one of the IP in pieces LOL.

BTW, that anti-tamper cap is a serious b*tch to get off. It took Butch several minutes to remove it, and he knew what he was doing. He then had no trouble getting wrenches on the lock nut and adjusting screw, whereas when I played with it later, I had a hell of a time doing it.

Why was I adjusting it anyway, you might ask? Butch at CVI was adjusting it at sea level, I live at 3500 feet elevation, and these vehicles don't have an altitude compensator. So Butch was guessing at what the right setting would be, and explained how to adjust it.

Weird, I get all the pictures. I was considering up loading directly to this thread when I realised that I had already documented it. Still, between the both of us Firesong has some pictures... smiles.

Falco.

[pajerry]

I adjusted mine forward a quarter turn forward. It was too much and smoked a little which is odd for the truck. I backed it by an eighth and it was perfect. Hardly any smoke on acceleration, more power I was seeking, I could finally rev past 3000rpm and have a bit of power left over. I can even rev to 4500 if I want. The MPG's was roughly the same or one point less (22mpgish), and the EGT's stayed quite consistent unless you're on a hill. Before it couldn't accelerate up any hill, or pass ever unless it was on a downhill....

This however, was on the 4m40. I can see how a lot of guys are protective over their deli's, and I believe its much harder to get at. The 'tamper proof device' is really just a seal to keep moisture and corrosion out, and the locking nut, well if you need that explained, take your deli in and pay someone to do it.

[Firesong]

One other thing is my unit is a manual transmission.
I have a lot more room to stick my hands in there than
if I had an automatic.

***
'Hardly any smoke on acceleration, more power I was seeking, I could finally rev past 3000rpm and have a bit of power left over.'
***

This is one reason I want to try. Having a manual tranny I was
thinking I should have a little more power at 3000rpm. Led me to think
that it was starving a little for fuel. I'm not trying to make
it into a hemi or anything silly. I will probably 1/8 of a turn and see how
that works for me. When it warms up in the spring I will most likely
check all the lines (internal breakdown) and probably replace them myself.
Kinks will be checked for before that of course.

FS

[FalcoColumbarius]

I think it depends on how your tranny is geared (speaking of the Kinks). Another thing, if you take a diesel rig, I mean a big tractor/trailer rig, they do not rev over 2200 RPM. This is why they have lots of gears. I was surprised to find this out.

I can get up to high RPM easily enough but I think I get too much smoke when climbing a hill. I have also noticed that my fuel economy has dropped by .2 Kilometres Per Litre (city), was typically 8.6 KPL, now is more like 8.4 KPL. Some of this could be due to my kick-down linkage which I adjusted after the last time it was disconnected but it's not quite there. If it was really bad it would be fixed immediately, but as it is only ... sort of out... it still works quite well... I think my major issue here is apathy, honestly.

I will study the locking nut assembly, as I said ~ when Butch or Edwin do it, it is like watching a magician at a birthday party. Butch told me that I should be very careful if I play with it. I figure small increments and keep a record so you don't get lost. I may also go out to CVI because I can and as an excuse to wish them an Happy New Year and do it under their supervision.

Falco.

[Firesong]

Thought I should update the thread.

Had a warm day, adjusted the pressure.
Literally took 3 minutes. Moved it a 1/4 turn.
Went for a drive.. Big difference in power but noticed
some smoke at acceleration so I stopped, backed it off
by less than an 1/8 and presto.

I can't believe the difference. This spring I am going
to get my injectors all rebuilt. And redo all the fuel lines.
I figure it's all good maintenance on this old of a vehicle.
No use starving a vehicle for fuel.

I plan on doing all the work. Lines and pulling the injectors.
I will look at the job of rebuild and see how difficult it appears.
At the most, I will take them to the diesel place here in town
that just rebuilt Tiny's :)

To all who are considering doing the adjustment, just do it.
It really isn't that hard or complicated.

Firesong