disco2shaun
New Member
ive changed to a 300tdi
gooselogan
New Member
Ah fair enough then, do the whole lot then imo 
V8jon
Well-Known Member
That's the first thing i did and it makes a huge difference but only to low boost ,if yours is an auto you'll feel a great improvement when setting off.
For what time it takes it's well worth doing the other mods you won't regret it.
gooselogan
New Member
It can be done to all manual 300's, and a few auto 300's, early ones if I'm right. The auto's that have EDC it cannot be done to
T1G UP
New Member
have you tried twaeking the boost up a little aswell?
in the lr 4x4 article it tells you how to turn the boost up by altering the length of the actuator rod.
This makes a great deal of difference without any major problems, can also clean up the emmmisions if ours is a bit smoky pre / post boost
try it, it's great!!!
in the lr 4x4 article it tells you how to turn the boost up by altering the length of the actuator rod.
This makes a great deal of difference without any major problems, can also clean up the emmmisions if ours is a bit smoky pre / post boost
try it, it's great!!!
BenjyP
New Member
It can be done to all manual 300's, and a few auto 300's, early ones if I'm right. The auto's that have EDC it cannot be done to
Something to do next week then... unless i get time thurs/fri...
V8jon
Well-Known Member
Dosn't make a difference if it's manual or auto,200 or 300tdi as long as it's not got the electronic fuel pump.
BenjyP
New Member
Ok, I've started to do this, made a huge difference already...
Low boost up one full turn, Star wheel round about 2 thirds and diaphragm round about 1/4 clockwise.
I know I could go more, it only smokes a little if I floor the pedal. However, say I'm cruising at 50mph in 5th gear at 1500 revs it accelerates nice and easy to just over 2000rpm... The rev counter then sits there for a while as the road speed increases before moving upto 2500/3000rpm ... it doesn't seem to happen when accelerating quickly through the gears, just on slow acceleration, is this normal!? What adjustment should I make to create a more uniform acceleration? Just wondering before I start tweaking again...
Thanks.
Low boost up one full turn, Star wheel round about 2 thirds and diaphragm round about 1/4 clockwise.
I know I could go more, it only smokes a little if I floor the pedal. However, say I'm cruising at 50mph in 5th gear at 1500 revs it accelerates nice and easy to just over 2000rpm... The rev counter then sits there for a while as the road speed increases before moving upto 2500/3000rpm ... it doesn't seem to happen when accelerating quickly through the gears, just on slow acceleration, is this normal!? What adjustment should I make to create a more uniform acceleration? Just wondering before I start tweaking again...
Thanks.
Langers
Well-Known Member
Have just done the injection pump tweaks - my goodness! What a difference!
Pulls much much harder now, across the whole rev range. Jumps off the line, and pulls all the way up to motorway speed and beyond. I could take it even further, as it's not smoking at all yet. Well pleased though, the de-cat pipe can only improve it when it arrives
Cheers V8
Pulls much much harder now, across the whole rev range. Jumps off the line, and pulls all the way up to motorway speed and beyond. I could take it even further, as it's not smoking at all yet. Well pleased though, the de-cat pipe can only improve it when it arrives
Cheers V8
V8jon
Well-Known Member
Have just done the injection pump tweaks - my goodness! What a difference!
Pulls much much harder now, across the whole rev range. Jumps off the line, and pulls all the way up to motorway speed and beyond. I could take it even further, as it's not smoking at all yet. Well pleased though, the de-cat pipe can only improve it when it arrives
Cheers V8
Your welcome,when you stop driving it like a joyrider with all that new power(I did) you should get better mpg,I'm saving a fiver a week since I did mine.
Oh and don't forget you can do this to any 200/300 tdi engine (non edc),like a 110 csw for instance
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V8jon
Well-Known Member
Not come across that before
did it do it before you tweeked the pump? If not maybe turn it back a bit to try and cure it.
Langers
Well-Known Member
Your welcome,when you stop driving it like a joyrider with all that new power(I did) you should get better mpg,I'm saving a fiver a week since I did mine.
Oh and don't forget you can do this to any 200/300 tdi engine (non edc),like a 110 csw for instance
That's the plan
In all honesty I did know I could have tried it on my 110 first, but I thought I'd better try it out on me old man's Disco first, in case I broke anything Just to check though, I am running my 110 on 50/50 veg oil at the moment - this shouldn't affect the tuning, should it?
why would it start running away with its self due to veggie oil?
davek0974
Well-Known Member
Interesting stuff.
My manual 300tdi runs well and gives good mpg so I'm concerned about tweaking it, the only major thing I find is poor pull away - it sort of starts to move then bogs down then recovers and off we go, it's worse with the trailer on. Is this likely fixable with the first adjustment in this procedure?
Thanks
My manual 300tdi runs well and gives good mpg so I'm concerned about tweaking it, the only major thing I find is poor pull away - it sort of starts to move then bogs down then recovers and off we go, it's worse with the trailer on. Is this likely fixable with the first adjustment in this procedure?
Thanks
davek0974
Well-Known Member
Have i got this right (before i start tweaking)
Screw in middle of diaphragm cap adjusts the low end power before turbo kicks in?
Star wheel adjusts the point at which fuel boost kicks in relative to boost pressure?
Diaphragm position adjusts the amount of fuel boost relative to boost pressure?
Max fuel screw (back of pump) adjusts pedal-to-floor fuel limit?
??
Screw in middle of diaphragm cap adjusts the low end power before turbo kicks in?
Star wheel adjusts the point at which fuel boost kicks in relative to boost pressure?
Diaphragm position adjusts the amount of fuel boost relative to boost pressure?
Max fuel screw (back of pump) adjusts pedal-to-floor fuel limit?
??
V8jon
Well-Known Member
I think you're right,I've been working since 10 o'clock last night so brain not functioning!
Smoke screw(under little cap) increases fuel/power at low boost
star wheel increases fuel delivery rate in relation to boost pressure(allows diaphram to move down more)
diaphram increases full load fuel delivery rate
I didn't touch the one at the back of the pump(full power adjustment) aparently it gives you lots more power but uses lots more fuel
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davek0974
Well-Known Member
excellent stuff, I'll try tweaking the smoke screw a little then, its only the point from tick-over to turbo coming in that's a bit low, it doesn't stall but feels like it wants to when pulling away unless you slip the clutch a lot.
I'll go 1/4 turn in at a time i think.
Dave
I'll go 1/4 turn in at a time i think.
Dave
