Vehicle & Technical > Defender

slugish 200 tdi

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land-def-90:
hi there had a drive in a 300 tdi defender tonight, made my 200 tdi feel and sound like a tractor, have been thinking there were something wrong with my motor for a while now it is just so slugish and feels ruf  got to the stage now that 50 mph is max, it starts on turn of the key in all weathers, uses no oil or water blows no bad smoke out, recently had oil and filters changed, is there a big difference in performance between the two engines and if not where do i start to rectify problem, any advice would be appreciated  Iain

extreme90:
300tdi's in defenders are slightly up on power over the 200s due to the nature of the turbo's
lack of power would suggest a blockage in the fuel or air system
try a new fuel and air filter, although you say they have been replaced, all kinds of crud comes out of the fuel stations these days, and anything could have been sucked into the induction system to block the air filter

lift pumps fail and generally the engine wont rev above 3k, theres also a slight stutter and in-balance at idle

intercoolers clog with oil deposits from the turbo causing a lack of ( denser) or cooled air into the engine causing overfueling ( black smoke ) and loss of power

when were the tappets last checked and adjusted ?

there are a whole lot of things that can cause loss of power, but it usually comes down to something silly

for ref, my std road 90 will do 70mph easy with 33inch tyres on
and my competition 90 (200) thats tweaked to the max will do way way way way over 70...i cant say actual figures because that would get me into trouble  :lol: :lol:
put it this way though, chav mobiles cant get away from me, but i cant get away from them  :lol:
dan

land-def-90:
thanks for the swift reply, will let you know how i get on, to be honest ive hed landy for around 3 years and it would never do 70 mph so must be something wrong, would be great to give it some ooommph

spinkster:
when your next down to about a 1/4 of a tank of fuel run some Forte (or similar diesel additive) through the system......you may be suprised at the difference!!

you can tweak the fueling and the turbo but to be honest its not worth doing until the engine is running well (which yours clearly isn't)

It may be worth popping the intercooler and hoses off and having a look what is going on there...the intercooler could be washed out with parafin and THOROUGHLY dried afterwards.....the turbo pipes could of de laminated inside and be causing a blockage in airflow......or when you take the airpipes off you could find that your turbo has issues (when you can see the impellor)

anyway....i'd start with a diesel additive (cheapest easiest fix first lol)

land-def-90:
hi there, have used millers diesel addative for a while now, im sure it made difference at first but not now, how do you go about cleaning the intercooler out, sounds like a prosses of elimination is the way to go starting at the cheap end ;)

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