AE class is in session!
More Turbo
Joined: Nov 2012
Posts: 727
Likes: 1
From: Chariton, IA
No, I haven't been able to take a longer trip with it, but suspect 100% highway would be close to your 19 MPG. My last tank was about 200 miles of highway, about 60 MPH, two separate trips, and a week of back and forth to work, and up and down some gravel roads, about 100 miles. Hand calculated mileage was about 16.5
Postmaster
Joined: Apr 2012
Posts: 2,613
Likes: 8
From: North Georgia
While not directly a mpg related ae topic...
2 bad injectors can dang sure take a bite out of economy...
Took some recordings before, and after i swapped out 2 injectors...
Before...
After...
Notice something odd about the MAP reading?
2 bad injectors can dang sure take a bite out of economy...
Took some recordings before, and after i swapped out 2 injectors...
Before...
After...
Notice something odd about the MAP reading?
Thread Starter
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Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
The first thing I noticed was the ICP. While boost is pretty cool, I know from experience the ICP is the back-side gravity factor. See that high IPR at WOT and ICP spike after each footlift? That's the signature of an HPOP not keeping up with demand. Injector O-rings or tired HPOP are suspect on a 400K truck..
Postmaster
Joined: Apr 2012
Posts: 2,613
Likes: 8
From: North Georgia
Im guessing that my orings are ok...
I just replaced them right at 5k ago.
Hpop going south... while i really dont like that prospect... if its time,its time.
Even with old ailing parts...
The 2 fresher injectors took the vibration away... she runs smoother... muuuuuch quieter.
My #8 is still clattery.. but checks out on rotational velocity readings. I dont have to downshift to go from 40-50 in a hurry anymore... on the WOT runs... i actually started to get a bit of tunnel vision from the unexpected acceleration.
I just replaced them right at 5k ago.
Hpop going south... while i really dont like that prospect... if its time,its time.
Even with old ailing parts...
The 2 fresher injectors took the vibration away... she runs smoother... muuuuuch quieter.
My #8 is still clattery.. but checks out on rotational velocity readings. I dont have to downshift to go from 40-50 in a hurry anymore... on the WOT runs... i actually started to get a bit of tunnel vision from the unexpected acceleration.
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Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Have you done the Hutch mod? Do you have a fuel pressure gauge?
I read something the other day - an explanation behind the fuel pickup (and fuel bowl) O-ring failures: The fuel line O-rings were not engineered for ULSD... the fuel came 9-10 years after the fact.
I read something the other day - an explanation behind the fuel pickup (and fuel bowl) O-ring failures: The fuel line O-rings were not engineered for ULSD... the fuel came 9-10 years after the fact.
Postmaster
Joined: Apr 2012
Posts: 2,613
Likes: 8
From: North Georgia
Yes i have done hutch/harpoon, frx. Still thinking there is a bit of a restriction tho because i still have a plastic inline filter before the spin on. Need to remove it.
No fuel pressure gauge yet. Soon tho.
No fuel pressure gauge yet. Soon tho.
Thread Starter
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Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Saving a session:
Recalling a session when making a new connection:
You must disconnect from a session before using a new saved session. As an example:
I'm troubleshooting something with my ICP session, but I want to see the Perdels (Cylinder Contribution Test with all cylinders monitored). I disconnect with the engine still running, then I connect with my CCT session that I have in my "inventory" of sessions. 10 seconds and all my stuff is set to precisely what I want, with the PIDs and limits I need, when I need it.
Recalling a session when making a new connection:
You must disconnect from a session before using a new saved session. As an example:
I'm troubleshooting something with my ICP session, but I want to see the Perdels (Cylinder Contribution Test with all cylinders monitored). I disconnect with the engine still running, then I connect with my CCT session that I have in my "inventory" of sessions. 10 seconds and all my stuff is set to precisely what I want, with the PIDs and limits I need, when I need it.
Thread Starter
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Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
It handles the Stage IIs at WOT without issue (no less than 50 PSI).
My spin-on ate my injectors' lunch:
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Postmaster
Joined: Apr 2012
Posts: 2,613
Likes: 8
From: North Georgia
Oh... have also done the full fuel bowl rebuild... with the nice blue flourosillycone drain valve refresh...
I know the procedures for saving a session... but when trying to do so... my computer just doesnt like to cooperate.
I know the procedures for saving a session... but when trying to do so... my computer just doesnt like to cooperate.
Thread Starter
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Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Say I want to save a screen shot, and I want it as big as possible.
When I go to save my screen, the software offers the option "Save as type" and you can look at a drop-down list of options. For the absolute clearest and biggest image the forum accepts as of this writing... always use "PNG" (Portable Network Graphics). This was a recent change to the forum and I applaud the change. You can upload a PNG image as large as 1600 X 1200 pixels (that's huge on the web), but it kills the download speed for those who want to view it with slow internet. I try to keep my images down to 1024 X 768 pixels for that reason.
- "Shift"+"Prt Scn"
- All Programs/Accessories/Paint
- "Ctrl"+"V"
- "Ctrl"+"S" or... "Alt"+"F", then "S"
- name it
When I go to save my screen, the software offers the option "Save as type" and you can look at a drop-down list of options. For the absolute clearest and biggest image the forum accepts as of this writing... always use "PNG" (Portable Network Graphics). This was a recent change to the forum and I applaud the change. You can upload a PNG image as large as 1600 X 1200 pixels (that's huge on the web), but it kills the download speed for those who want to view it with slow internet. I try to keep my images down to 1024 X 768 pixels for that reason.
Postmaster
Joined: Jan 2009
Posts: 4,006
Likes: 1
From: AL, Reform
i have not read all of the thread still reading but i see where you suggest doing the buzz test cold. my brothers truck was having problems when is got hot running on a bad hole. cold buzz all was good but when the truck got to 180* oil the # 6 barely buzzed. so it may be best to check both ways. maybe that will help someone
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Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Yes... hot and cold. I have experienced noisy injectors when the Engine Oil Temperature reaches about 190, then it gets absurd at 200. The viscosity changes and the poppit valve reacts to this.
Postmaster
Joined: Apr 2012
Posts: 2,613
Likes: 8
From: North Georgia
A 10th of .001 variation where a 10th is tolerance can have pretty interesting effects where very tight fitting parts move inside eachother.
Heat:
It can do some interesting things to metal.
For instance, concentric bores.
On a chunk of 8" solid 1515hs stainless... with a port bored about 3/4" into the side of the o.d. had to stay within .0002" of concentric. The boring process was very early on in construction of the tool.
Mid late stage there was a welding process...
I had to weld a tungsten carbide armor surface on the stabilizer blades on the part.
1. The port had to remain concentric.
2. The part must remain magnetically dead...
We were able to achieve a successful bond without altering the magnetic properties of the steel... but there was no way to accomplish the task without causing just enough warping to throw the critical port out of tolerance.
This is just an illustration to show... there are many... many more factors at play affecting how parts interact.
Lead Driver
Joined: Jun 2013
Posts: 5,648
Likes: 894
From: north of Minneapolis, MN
Rich,
Could you help me out by looking at this data? It is of my 2001 with 185k miles, running a DP 80Hp Tow tune, while hooked to my 24' GN horse trailer...maybe 9k lbs.
It's in xlsx format.
trailer80towtrip2
Could you help me out by looking at this data? It is of my 2001 with 185k miles, running a DP 80Hp Tow tune, while hooked to my 24' GN horse trailer...maybe 9k lbs.
It's in xlsx format.
trailer80towtrip2
Last edited by Dan V; Jul 3, 2013 at 10:26 AM. Reason: spelling