Vehicle & Technical > Discovery
New engine isnt as great as I was hoping.
Disco-Ron:
I've not long had my 300, and when it was totally standard, it would cruise at 100, on a private road of course..... i was shocked at that i must say, won;t be that quick now, as i've fitted 33's and a few other goodies...!!!...:)
Range Rover Blues:
I've got to say timing, either fuel pump or heaven forbid valve timing.
Ubnless of course you have missed off something silly like the turbo to fuel pump pressure pipe, or an intercooler leak. I've had an intercooler pipe bust and the thing drove like a 1.1.
Now my sister has a 300TDi auto and tows with it, it's not as fast as her V8 was but it does the job nicely and gets reasonable economy with her at the wheel.
Our 300 manual will do about 27 mpg with me driving and it's no slouch I can tell you.
Mr Alford:
we have a 200tdi manual disco(the toy) and a sensible 300tdi es for towing the horse box auto of course when i bought both cars i changed all the filters on them first thing i did and the one at the back right by the fuel tnk this one is renown for blocking up, i made shure both fuel pumps were working efficently i ended up cranking the turbo up onthe 200 to bring it up to the same power as the 300 but as for towing a horse box which once fully laden with 2 horses is similar weight to a caravan maybe even heavier it flew up hills as if they werent even there keeping speeds up long hills of around 50-60 which is good but cruizing at 70 is a piece of cake u must have some problems
muddyjames:
thanks everyone so far for your replys. This is a long post but all your comments have been replied too below. :D
--- Quote from: Jim-Willy on August 11, 2008, 19:09:40 ---My Dads 300Tdi auto disco is a nail, very slow to take off.....
--- End quote ---
I have found mine is too now I have no kick down for the auto box. I tend to hold it in 2nd, then 3rd, then D to pull away otherwise it goes do 4th too soon and takes ages to pick up speed. I am happy doing this with the caravan on the back. Doesnt really need to be done when on it's own.
--- Quote from: Frankie-Boy on August 11, 2008, 19:19:18 ---
James,
Its a long shot but try changing the fuel filter, it won't do any harm but it might do some good. :)
--- End quote ---
I may just do that. If the oil is anything to go by when I changed it after just getting the new engine it was like new, so the fuel filter maybe new ish too as it came with the engine. Certianly worth a go.
--- Quote from: bilge rat on August 11, 2008, 19:28:05 ---hi james , not up on the auto but have heard they are less economical than the manual, i get about 27 when towing .
--- End quote ---
Is yours auto or manaul? I have heard that autos do less mpg but Dr Ed on here swears he gets 30mpg going about town solo with his 200tdi manual. For me to get 23mpg solo on a motorway for 90% of the journey is just painful.
--- Quote from: bilge rat on August 11, 2008, 19:28:05 --- is your auto an edc or before that .
--- End quote ---
What is an EDC? It is an M reg. an early 300tdi, ie it doesnt have leccy seats or cruise control and the cd player is under the passenger seat instead of the drivers. So a very early 300tdi if that helps.
--- Quote from: bilge rat on August 11, 2008, 19:28:05 ---is the pump timing crack on . iff its running smooth and low on performance it may be out a little. noisey powefull and smokey itt;ll be a little out the other way . there easy to check .
--- End quote ---
No idea. It gives a little puff of black smoke when I start the engine up but I dont have any glow plugs at the moment as I have had to bypass the imobiliser as that has jammed on so I have a wire going from battery-fuse-switch in car-stop solonoid. How do I check it?
--- Quote from: bilge rat on August 11, 2008, 19:28:05 --- i know with your recent luck you will be concerned about messing too much but has the egr been blanked .
--- End quote ---
this new engine has no egr at all and I have blanked off the egr part on the intercooler pipe. There was a sensor or stat on the very top of my old engine that the wires melted on but this new engine doesnt have one and doesnt look like it ever did. This new engine was from a manual disco. Would this sensor make any difference?
--- Quote from: bilge rat on August 11, 2008, 19:28:05 ---did you clean the intercooler after your last problem.
--- End quote ---
Yup. soaked it in petrol over night, then cleaned with water and left to dry for a week. I am guessing intercooler is the small radiator next to the main water one?
--- Quote from: bilge rat on August 11, 2008, 19:28:05 ---as said fuell filter / air filter, check the basics first .then go from there . ive tweeked both pumps on mine without going daft or without any probs makes a hell of a difference . just a thought ?..alan....
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As you said above, I am worried about tweaks as I really cant afford any more bills as I have tax and insurance coming up within a month and just been through MOT and I have to do a years tax because if I do 6 months tax I end up with both cars tax running out in the same month. :(
--- Quote from: peasey on August 11, 2008, 21:22:29 ---exactly as bilge rat said,i cant comment on towing yet as i havent but my 300 tdi is not quick off the mark but fast enough to pull out quickly at a busy round about,im getting about 32mpg with no pump mods and only the egr blanked,when i did this i cleaned out ALL the pipework and intercooler with petrol.Mine has got 120,000 on the clock i have had it up to 95mph and she will sit at 60mph all day high winds or not so somethings definatly a miss,have you checked out turbo hoses?to be honest mate my moneys on the timing though.
--- End quote ---
95mph. :shocked: I ease off at 70mph as the handling becomes appaling and the disco is giving its all to be there. This new engine is better and can occasionaly get to 80 if it is down hill and wind behind me. I have to have foot to the floor up hills to keep 70mph. Better than the last engine but still not happy. Turbo hoses? where are they? what am I looking for? Is timing an easy thing to put right? If I took it to my local garage is it an hour job to check or do or is it a major one?
--- Quote from: Disco-Ron on August 11, 2008, 22:04:16 ---I've not long had my 300, and when it was totally standard, it would cruise at 100, on a private road of course..... i was shocked at that i must say, won;t be that quick now, as i've fitted 33's and a few other goodies...!!!...:)
--- End quote ---
I have tree / rock sliders, snorkel, bfg at's steering guard with hi lift and recovery points on so a hefty job on my disco. Surely this wouldnt slow it down that much would it? Total weight 40kg? half an average person in the car. That wont have a huge effect, surely?
--- Quote from: Range Rover Blues on August 12, 2008, 02:51:40 ---I've got to say timing, either fuel pump or heaven forbid valve timing.
--- End quote ---
By the way you say that valve timing doesnt sound like a good thing. An cop car though wouldnt be driven with valve timing wrong would it? I think it was only used on a pay and break day after it left cop service by some young lads who smashed in the rear end hence the engine came out. The guy I bought the engine from is from an off road trialing club and he sells landies to these lads, they destroy them, he buys them back for less money and strips them and makes money on parts. Dont thinkhe would sellme a duff engine.
--- Quote from: Range Rover Blues on August 12, 2008, 02:51:40 ---Ubnless of course you have missed off something silly like the turbo to fuel pump pressure pipe, or an intercooler leak. I've had an intercooler pipe bust and the thing drove like a 1.1.
--- End quote ---
Where is that pipe? Intercooler leak being the rad gone? do I need to get some silicone hoses or something?
--- Quote from: Range Rover Blues on August 12, 2008, 02:51:40 ---Now my sister has a 300TDi auto and tows with it, it's not as fast as her V8 was but it does the job nicely and gets reasonable economy with her at the wheel.
--- End quote ---
:evil: I'm not jealous at all!! :lol:
--- Quote from: Range Rover Blues on August 12, 2008, 02:51:40 ---Our 300 manual will do about 27 mpg with me driving and it's no slouch I can tell you.
--- End quote ---
So you driving like you stole it and you still get 27mpg. I'm going to cry!
--- Quote from: Mr Alford on August 12, 2008, 08:43:14 ---we have a 200tdi manual disco(the toy) and a sensible 300tdi es for towing the horse box auto of course when i bought both cars i changed all the filters on them first thing i did and the one at the back right by the fuel tnk this one is renown for blocking up,
--- End quote ---
Where is this one? Maybe this is my problem? Both engines did 23mpg and into teens when towing so a blocked filter I dont know abaout could be a cause. The last engine ran better on veg oil (28mpg) and the oil was in the main tank. Dont know what relevense this has but thought I would share!!!
--- Quote from: Mr Alford on August 12, 2008, 08:43:14 ---i made shure both fuel pumps were working efficently i ended up cranking the turbo up onthe 200 to bring it up to the same power as the 300
--- End quote ---
How do I know if the fuel pump is working properly? The new engine came with near enough everything on it as a lump to put in, plug in and go.
--- Quote from: Mr Alford on August 12, 2008, 08:43:14 ---but as for towing a horse box which once fully laden with 2 horses is similar weight to a caravan maybe even heavier it flew up hills as if they werent even there keeping speeds up long hills of around 50-60 which is good but cruizing at 70 is a piece of cake u must have some problems
--- End quote ---
If I drop the gears down to 3rd or even 2nd and get it screaming absolute blue murder I can keep it at 50-60 up hills. I was in 2nd at one point on Sunday trying to get up a hill that wsnt even that steep. Lorries entering from a slip road were over taking me and they had less of a run up of the hill than me. :'(
bilge rat:
hi james , think the easy way iff it has edc it has like an airflow meter between the air filter and turbo i think . big unit you wont miss it . it prob isnt.. i think ! the sensor in the middle of the head is something to do with the e.g.r set . like a temp sensor, so wouldnt worry. the pump timing iff you get a wading plug for the bell housing you need to drill a 3/16 hole in the very ctr of it .or find some sort of plumbing fitting and modify it . got mine out a boat yard. any way turn the engine and there is a slot in the flywheel which is tdc. then you should be able to remove the round plate on the front of the timing cover you'll see the front of the deisel pump . there is a timing hole at the top slightly left iff i remember now you should be able to slide a 9.5 mm drill into this hole and into the front of the pump . (do not attempt to turn the engine in any way when this is located .0 you can damage the front of the pump. hope this makes sence and helps . cheers . alan...
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