Vehicle & Technical > Discovery

Typical 300Tdi engine power problems ?

<< < (3/6) > >>

Porny:

--- Quote from: "Mace" ---Porny, can I just check something you have written above regarding the injector pump settings? If the offset cone face is facing the pin does this not reduce the the amount of fuel as the pin is pushed further in at lower boost rather than at MAX as you have suggested, or am I reading it incorrectly? I always thought (but I'm happy to be corrected) that it's the shallower face not the steeper face that allows the pin to come further out allowing more fuel through. Therefore turning the dot away from the pin increases fuel and power. Sorry if I've got this all wrong.
--- End quote ---


Really naff drawing, but haven't got time to do a better one at the mo...

The dot on top of the diaphragm means absolutely nothing!!!  It depends where it was when some one assembles the diaphragm... you need to pull the whole thing out and look at the profile, not the dot.

What you want is the maximum movement of the pin....


Ian

Budgie:
Slightly better diagram take from Dodgeram.org.  :wink:



I think you're both saying the same thing in different words (if that makes sence?  :-k).
Basicly, the longer the pin the more fuel is delivered.

If the vehicle is fitted with the standard intercooler then I wouldn't go to full (max) fuel as it's just a waste. It won't all get burnt in the engine and just blow out the back as black smoke.
Normally LR set the diaphram to the minimum setting and a 90 degrees turn clockwise will do it for the standard intercooler. 180 degrees will take you to max fuel.  :wink:

Mace:
Sorry Porny, your picture is correct as I see it. It was your wording that confused me (hence maybe others) Budgie has put me straight. The further out the pin goes the more fuel is delivered rather than the the most distance covered from start point to finish point.

Budgie, mine was a stock road going Disco when I got it and the top of the diaphram looked like it had never been off. Mine was assembled with the dot on the mininum mark but situated at 6 o'clock i.e already 90 degrees out. I 1st turned mine 90 degrees from this point and caused black fog for all those who followed. I quickly turned it back and it's now set at 95 deg from min. for most of the time and I turn it up another 5 or 10 degrees when I feel the need for speed. :-)  Still got standard intercooler too.

Mace:
Hey, what we need is for someone to fabricate an operating mechanism for turning the diaphram without taking the top off. Now there's a thought  :lol:  :lol: You could turn it up and down from inside the vehicle when you needed it.

Budgie:

--- Quote from: "Mace" ---Budgie, mine was a stock road going Disco when I got it and the top of the diaphram looked like it had never been off. Mine was assembled with the dot on the mininum mark but situated at 6 o'clock i.e already 90 degrees out. I 1st turned mine 90 degrees from this point and caused black fog for all those who followed. I quickly turned it back and it's now set at 95 deg from min. for most of the time and I turn it up another 5 or 10 degrees when I feel the need for speed. :-)  Still got standard intercooler too.
--- End quote ---


As Porny said, you can't go on where the punch mark is on the diaphram. Mine was also set to minimum when I looked at it first and the punch mark was in the 12 o'clock position (viewed from the offside wing).
Even with the Allards intercooler fitted it's still only 130 degree (between 4 & 5 o'clock) from the minimum position and that's fine for me.  :wink:

Navigation

[0] Message Index

[#] Next page

[*] Previous page