joshremlin

Active Member

• Feb 16, 2015

• #1

So ive got a disco 300tdi and has been spot on up to now its running a bit sluggish for some reason wont go past 3k revs so when im towing or hit a hill in general and start slowing down i drop it a gear but instead of it reving high and keeping its speed or picking speed up it slows down till the rev counter hits 3k revs its almost like it's got a limiter fitted, ive tried all sorts its had new filters oil etc resently and started playing up before she was serviced.

Its just driving me mad because if ive got caravan on and hit a steep hill i end up crawling up in first gear then if you drop it into 2nd theres no power there and slows down!

I'll post a video now and thanks for any help guys!

 

Jonnyb1990

Well-Known Member

• Feb 18, 2015

• #2

Sounds silly but a really good service will do it wonders

 

Paul D

Old, nackered 'n broke, but the Landy is fine . :)

Events Planner

• Feb 18, 2015

• #3

Check all intake air hoses on the inside for de-laminations or splits.

.. and the accelerator pedal isn't getting caught on a mat or carpet!!!

 

trax

.

Events Planner

• Feb 18, 2015

• #4

Paul D said:

Check all intake air hoses on the inside for de-laminations or splits.

.. and the accelerator pedal isn't getting caught on a mat or carpet!!!

Click to expand...

haha, i've done that before when i cut up some new rubber mats

 

Paul D

Old, nackered 'n broke, but the Landy is fine . :)

Events Planner

• Feb 19, 2015

• #5

trax said:

haha, i've done that before when i cut up some new rubber mats

Click to expand...

Guess how I know about it ...

 

T

TheMunster

Active Member

• Feb 21, 2015

• #6

If intake is ok I would be thinking lift pump, do the tappets, check fuel pipes for holes including the leak offs, check throttle cable running nice and free and isn't slack. Then I'd be checking boost etc

 

L

LeftFoot

Active Member

• Feb 24, 2015

• #7

Throttle cable adjustment did wonders for me. I couldn't believe the difference it made. Check for slackness.

 

White_Disco

Active Member

• Feb 24, 2015

• #8

My disco used to slow right down on long motorway gradients, it had multiple problems. Check all the things mentioned above plus the injector leak off pipes which can start to leak and stop you driving uphill. I eventually dumped the catalytic converter (replaced with straight through pipe), middle silencer and the EGR valve now it pulls up long hills at 60 in 5th gear.

 

joshremlin

Active Member

• Apr 22, 2015

• #9

I'm still banging my head over this although I've noticed a **** poor joint in the fuel line which has silicone on so I think this is my suspect, does anyone recommend any good fuel line I can use with bio ? As I tend to run it on bio in the summer.

Thanks guys
Josh

 

S

sam7986

Member

• Apr 22, 2015

• #10

This is starting to sound like you need to clean out your sedimenter

http://www.landyzone.co.uk/lz/f8/cleaning-out-sedimentor-137301.html

 

timtheenchanteruk

Well-Known Member

• May 1, 2015

• #11

Viton pipe is good for bio resistance, but its pretty expensive, and can be hard to get in larger sizes, I use rubber and replace as required.
longer runs nylon airline is fine.
Viton can also be used for leakoffs as its heat resistant.