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  #21  
Old March 13th, 2016, 04:25 PM
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Quote:
Originally Posted by RBBailey View Post
I thought the star wheel gear is what he meant when he said he turned the "clockspring".
Yes and that does not affect maximum fueling.
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  #22  
Old March 13th, 2016, 04:27 PM
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Trevor Griffiths
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Diaphragm went CW 90*, star wheel CCW first time 4 clicks, than CW 1. Adjusted fuel pin down 1.25 turns. Everything marked and documented so I can go back! Have done 1 thing at a time to judge differences in "feel", but no empirical data. I do have a tall rack and currently 265/75/16MTR's about to be replaced with a set of 7.60^16 XZL

------ Follow up post added March 13th, 2016 04:30 PM ------

And I realised I never mentioned the rack originally!
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  #23  
Old March 13th, 2016, 04:38 PM
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From what I'm reading, both the diaphragm and star wheel are supposed to be turned clockwise from original point. If you mean you went back to center after 4 clicks CCW, then went CW 1 click, that would be the right way to do it. But if you mean you went 4 clicks CCW, then 1 click CW, you'd be 3 clicks CCW from center, the wrong direction. This would mean your pin and star wheel adjustments are mismatched.

All of my experience with Rovers tells me little bits make noticeable differences. a 1.2 and larger tires does make for a higher final gear. It isn't much, but it could be noticeable.
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  #24  
Old March 13th, 2016, 04:42 PM
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Probably mostly the rack.
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  #25  
Old March 13th, 2016, 04:44 PM
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Quote:
Originally Posted by RBBailey View Post
From what I'm reading, both the diaphragm and star wheel are supposed to be turned clockwise from original point..
No. They do different things me you need understand what they are doing. This is probably not the right thread to get into it.
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  #26  
Old March 13th, 2016, 04:45 PM
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Yes, you have it correct, I am 3 clicks ccw from my starting point . Easy enough to try 1 click CW from starting point!
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  #27  
Old March 13th, 2016, 04:51 PM
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My 300Tdi gets a solid 22-23 mpg.
It was new in 2001, 160K miles now
1.2 LT230Q TC with a Zf4hp22 automatic
235/85R16 (31.5") I run 45psi.
Stock '97 diff's
Fuel screw turned down 1/8 turn (Clockwise) from factory, out of the crate setting (for elevation).
My elevation is 4500' + and hilly
I run a custom 198 T-stat. (Ford's run as high as 215 T-stats) I have run a 203 in the winter with no ill effects.

My only thought about the poor mileage you guys are seeing is a heavy, off the line, foot. Drive it like you have a raw egg between your foot & the accelerator & keep the RPM's <2500. I'd bet your mileage increase. And pay no attention to the jerk riding your A$$ off the line.
After all why did you buy a diesel anyway, it wasn't to "lay down rubber".
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  #28  
Old March 13th, 2016, 05:26 PM
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Trevor Griffiths
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True, was not expecting vw TDi fuel economy or blistering accelaration. It just seemed a little off, and I know Ive driven others that felt more crisp. More like I wanted to add to my knowledge base. More customers are asking, more are looking at legal imports, so I figured I could always learn something to help them, and help me.This car was a customer's, and I'm fortunate to know the history. Currently at158k.
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  #29  
Old March 13th, 2016, 05:44 PM
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I should mention it's now mine....and I am neglecting my other Rovers while I fix all the detail stuff that had always bugged me when it was Tim's.
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  #30  
Old March 13th, 2016, 05:48 PM
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My wife drives an '06 Liberty with a CRD 2.8 diesel. Now that thing JUMPS off the line like a gasser!
Her mileage is always less than when I drive it. I can consistently get 28-29 where as she gets 24-25.
The fly by wire cars have such a fast throttle response that it is easy to waste fuel.
Again, the raw egg and <2500 rpm rule will greatly influence your mileage.
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  #31  
Old March 13th, 2016, 06:20 PM
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Gentle throttle makes sense, but initially, I was not getting a lot of throttle response, so foot to the floor until the boost came up was the rule, unless headed down hill.....

------ Follow up post added March 13th, 2016 06:21 PM ------

Any thoughts on the Timber Trail boost pin?
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  #32  
Old March 13th, 2016, 06:44 PM
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Quote:
Originally Posted by Viton View Post
My 300Tdi gets a solid 22-23 mpg.
It was new in 2001, 160K miles now
1.2 LT230Q TC with a Zf4hp22 automatic
235/85R16 (31.5") I run 45psi.
Stock '97 diff's
Fuel screw turned down 1/8 turn (Clockwise) from factory, out of the crate setting (for elevation).
My elevation is 4500' + and hilly
I run a custom 198 T-stat. (Ford's run as high as 215 T-stats) I have run a 203 in the winter with no ill effects.

My only thought about the poor mileage you guys are seeing is a heavy, off the line, foot. Drive it like you have a raw egg between your foot & the accelerator & keep the RPM's <2500. I'd bet your mileage increase. And pay no attention to the jerk riding your A$$ off the line.
After all why did you buy a diesel anyway, it wasn't to "lay down rubber".
Yep! That's what I was trying to say. I SHOULD not drag race the korean street rods!
may try rolling smoothly on a tank full (16 gallons in the D) and see what I get...
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  #33  
Old March 13th, 2016, 06:52 PM
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I found that in the Disco I actually got better mileage if I accelerated fairly quickly to whatever the speed limit was, then I basically coast with my foot just floating on the gas. This was due to the time taken to get to cruise speed being effectively cut in half, therefore using less fuel to get to that optimum cruise.

Use every down hill for acceleration, don't waste fuel trying to accelerate up hill. I could get 13.5mpg on the way to work if I concentrate. If I didn't, I would get 12mpg.

However, I suspect that driving a diesel is different in some ways. I'll have to relearn.
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  #34  
Old March 13th, 2016, 07:02 PM
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stephen gross
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Quote:
Originally Posted by lrnasd90 View Post
The best I have ever gotten with a 300tdi is 19mpg. I have had 4 (3 of them where in d90s and one in a 110), so I guess they where all set up wrong? I often challenge the idea that they actually get the mpg numbers that I have read about. I suppose in a bone stock truck with road tires they may get that, but I have never actually observed it. None of my trucks where bone stock. All had lift kits and bigger tires. Now I did have a td5 (in a Defender 110 crew cab) and it did get 28mpg all the time. It had a lift and bigger tires.
I have a D110 with a 300 Tdi and consistently get 24MPG. Stock tires and no mods..

-sg
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  #35  
Old March 13th, 2016, 07:36 PM
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IME, it does not matter a lot how you drive with a diesel. It makes a huge difference with a petrol. On the highway it does matter how fast you go.
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  #36  
Old March 13th, 2016, 07:58 PM
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I have been getting a consistent 20 with my D90. How I drive it definitely matters. Maybe not as much as a gasser, but full throttle acceleration and high cruising speeds definitely have a bad effect on my mileage. I regularly cruise at 80mph here in Phoenix. That is just keeping up with traffic. If I run it really hard, the mileage drops down into the mid teens.
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  #37  
Old March 13th, 2016, 08:24 PM
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My last fill up was 20 MPG. That's city driving, running B50. My all time best is 28.3 MPG and my all time worst 13.9 MPG. I've been keeping a record for the past 7 years.
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  #38  
Old March 13th, 2016, 10:29 PM
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In my experience trucks with turned up pumps produce considerably more torque and get better mileage because you aren't constantly flogging the engine.

Stock is extremely anemic, many don't even idle smoothly because they are set so lean.

With 235/85's I regularly got 22-24 in my 130. With 285 km2's that dropped into the high teens.
Stopped paying attention when I put 35's on it.
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  #39  
Old March 13th, 2016, 11:40 PM
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I have a 300 Tdi in a 110 CSW, closing in on 300,000 kms. Bit of a lift, bit of a tweak to the FIP, VNT turbo, 1.2 LT230Q, 235/85/16s. I agree that whether I am caning the beast in the fast lane or babying it, there is little impact on mileage IME. Winter weather seems to knock it down more. I get about 21 miles per US gallon. Had a nice tailwind the other day on the highway and managed 23 mpg.
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  #40  
Old March 14th, 2016, 12:01 AM
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You do get less in winter because the winter fuel have less energy.
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