Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

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  #61  
Old 01-23-2021, 05:21 PM
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Originally Posted by tjc transport
if you get 13-15 consider it good.
back when i got my 88 and diesel fuel was over 60 cetane, i would regularly get over 20 mpg on the road and 17-18 around town.
now the cetane rate is 40 (if we are lucky) i average 12-14 on the road and 9-10 around town.
Originally Posted by Dylan Fileccia
ok so is the range I see good for running both tanks or should I be seeing more?
And that Question was also answered correctly by TJC
IF you get 13-15 consider it good... YMMV depending on driving conditions
 
  #62  
Old 01-23-2021, 05:28 PM
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Originally Posted by lonewolf_
And that Question was also answered correctly by TJC
IF you get 13-15 consider it good... YMMV depending on driving conditions
thats better than I expected considering the injectors are original as is the injector pump. I found out through work that the manual lift pump is still available through Ford for the 6.9 and 7.3 IDI trucks. It goes for at non employee price of $45 USD. The show a stock of 350 in Detroit and over 1,000 in the states. So a odd ball part still available when brake pads for vehicles with a GVW over 8500 lbs are not. Its kinda like ok the part that brakes occasionally we still make but common items that wear out we don't. I find it amusing that Ford does that.
 
  #63  
Old 01-23-2021, 05:45 PM
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2 styles of lift pump for the IDI



Carter M60278... being that the Pump itself is common to many other applications and the only difference is the Arm ..I can see plenty being stocked.
 
  #64  
Old 01-23-2021, 05:49 PM
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Originally Posted by lonewolf_
2 styles of lift pump for the IDI



Carter M60278... being that the Pump itself is common to many other applications and the only difference is the Arm ..I can see plenty being stocked.
It reminds me of a 60s and 70s ford small block or inline 6 fuel pump. Wonder if it is.
 
  #65  
Old 01-23-2021, 06:09 PM
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basically yes. they were designed to use most of the parts already on hand to reduce costs.
 
  #66  
Old 01-23-2021, 06:14 PM
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Originally Posted by tjc transport
basically yes. they were designed to use most of the parts already on hand to reduce costs.
that makes sense. Seeing that the V8 mustang and Bronco shared a lot of parts. Got one more nagging issue. My PRND21 is way out of wack. In reverse it shows park reverse is neutral and neutral is drive drive is 2nd and 2nd is 1st. And the parking pawl does not engage fully unless I slam the shifter into park. Its a rod linkage and I want it to be correct.
 
  #67  
Old 01-23-2021, 06:16 PM
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worn out Bushings most likely

and do the linkage adjustments
 
  #68  
Old 01-23-2021, 06:17 PM
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Originally Posted by lonewolf_
worn out Bushings most likely
how many are their i might as well replace them all.
 
  #69  
Old 01-23-2021, 06:38 PM
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they come in a set of 2 from Ford and you have the linkage bushing... you work at Ford so you should have no issue looking it up.
 
  #70  
Old 01-23-2021, 06:39 PM
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Originally Posted by lonewolf_
they come in a set of 2 from Ford and you have the linkage bushing... you work at Ford so you should have no issue looking it up.
hopefully they are not obsolete.
 
  #71  
Old 01-23-2021, 07:26 PM
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chocks the wheels. remove the shift rod from the shift arm on side of trans. put trans in park.
key off lock position so you can move shifter, put shifter in park. go back under and adjust rod to fit shift arm.
put it back together and test drive.
if the shifter is now good, remove right side lower dash and the PRNDL is adjusted by the little plastic turn wheel on the shift indicator cable.
this one is for a C-6 trans but should also work with an E4OD:
https://www.ebay.com/itm/15306744997...iABEgJhovD_BwE
 
  #72  
Old 01-23-2021, 08:34 PM
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Thank you Tom. I thought those were obsolete. Mine has been broken since who knows. All I know is go down three notches, foot on pedal.
 
  #73  
Old 01-23-2021, 08:48 PM
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Originally Posted by Dylan Fileccia

Don`t get the illusion that the front tank is bigger because it is longer.
Front and rear are 19 gal ea. Most likely the same as my 86 F250.

I have the 6.9, t-19 4-spd and 3:55 Diff, and one wheel drive.
I can click along on an average of 20mpg. Some times 18 and go as
high as 22 on one tank.
This is running empty, = no load.

You have a 91 F250 7.3 IDI E4OD 4 x 4. What Diff? probably a 4:10?
You do have the Over Drive Trans. But the auto`s do for the most part
take a bit more fuel to operate compared to a manual trans.
For your year, and manual would be the ZF-5, which is OD.
if you had the 3:55 Diff. that also would help with mileage, and your
driving habits are a big factor also.

I fill my tanks to the brim of the Fill Tube every time. Write down the
OD reading on the recipt. Next fill do the same, subtract to get the
miles driven, divide the fuel it took to fill tank, and that is your MPG
for that tank.
You cannot get a correct answer saying I drive 350 miles between
tanks, is that good?

When I fill the front tank to the brim after the handle click off, I add a
good 3 gallons. So probably 22 gallons.?


Charlie
 
  #74  
Old 01-24-2021, 12:29 AM
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Originally Posted by Charmalu
Don`t get the illusion that the front tank is bigger because it is longer.
Front and rear are 19 gal ea. Most likely the same as my 86 F250.
Oddly enough I had a 91 f250 with a 351/e40d. It was just a custom base model, yet the front tank held 30 gallons. I know because I had to drain it when I swapped out the fuel pumps due to check valve failure (real common on the gassers) I had an old 35 gallon fertilizer barrel and it was darn near full.

That sucker was long.....no way it would have fit with a transfer case. Idk if it came out of a cab and chassis or what? Used the standard for sending unit iirc

Rear tank was your standard 20 gallon.
 
  #75  
Old 01-24-2021, 11:23 AM
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Originally Posted by Dylan Fileccia

Definitely a flint stone compared to my coworkers F250. Working at a Ford dealership can be beneficial but thats also how I found out I cant get the tach sensor any more. Obsolete as are the pads for trucks over 8500lbs mine is 8800lbs curb weight.

The IDI wants to play.
 


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