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souster4

Member Since: 11 May 2014
Location: West midlands
Posts: 153

300tdi no power/grunt at low revs

Hi all

Some time ago i had a problem with poor performance on my 300tdi before the turbo boosts, which i thought was the lift pump. And yesterday it came to my attention again that its very down on power at low revs. I had to set off up a steep hill yesterday, approx 20% gradient, and the vehicle would not pull itself up in 1st gear, it kept stalling each time. I had to go into low range, tackle the hill and then back into high range. Surely thats not right? This was without any load in the vehicle.

Since i posted about the problem last ive checked or replaced a few things -

New delphi lift pump
Cleaned and flushed intercooler
Checked turbo/intercooler pipes
Checked boost diaphragm for splits
Replaced diesel leak off pipes
Clean airfilter
New fuel filter 6mths ago on purchase of car
Cambelt replaced by garage on purchase
Valve clearances checked

Once the turbo is spooled up it seems fine, and the top end speed is fine and acceptable, but it seriously lacks low down grunt, what a land rover is known for.

Ive given the FIP a slight tweek, smoke screw on the top 1 and half turns, star wheel half a turn, and diaphragm a quarter turn. But while this helps in every day driving, its not helping the low down grunt and torque as much. Its now smoking a little bit in car headlights since the pump adjust too.

Any help would be greatly appreciated. Thanks again

3rd Nov 2014 11:39am

NickH

Member Since: 01 Nov 2014
Location: Halifax
Posts: 204

Hi Souster4

It could be the lift pump again, start it up, let it run for a few secs, turn off and check if the fuel filter is full. For some reason
300tdi lift pumps are not very good whatever make they are.

I have had a few turbos start to seize up on 300 s , engine off, remove the pipe and spin the turbo shaft. It should spin nice and free, if its a little bit stiff/sticky that maybe making it lazy at low revs.

The reason I said check lift pump first is because the turbo wouldnt really make it stall.

Hope this helps 2003 Td5 90
2013 sport hse
2012 700 raptor quad
2012 siromer 4x4 tractor

3rd Nov 2014 9:55pm

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