New to TD5 ownership, some queries?

Hi all
Been a while since I've owned a land rover, and I'm back again this time with a 2000 td5 10p engine with 95k on the clock and have some questions that I'm unsure of.

1. Is it normal for the temp gauge to sit below half, like it's just past a 1/3rd never any more?

2. The glowplug light stays on for ages, over 5 seconds which seems a while, and I didnt wait for it this morning and the engine didnt want to start, took a 2nd crank and felt rough. The fuel pump runs forever too.

3. Are they known to be jerky, like the throttle is sensitive, but then it's not, which just bounces around on the backlash?

4. Are they known to be thirsty, I mean I've got a slight weap on the FPR, but I seems to use diesel very quickly to me.

It's all standard as far as I'm aware other than a centre box removal pipe. Seems loads of torque but abit disappointed at the moment, noise levels seem stupidly high. And I'm used to Land rovers.

Any tips welcome
Thanks alot

My td5 temperature gauge reads the same, even with fan removed and new thermostat. Never goes up above about 1/3rd.
Mine starts on the button without using glow plugs, but if I do let glow plugs come on they are only on a couple of seconds at most,.
Your Diesel pump problem may be due to the FPR leak, change that and pump may be fine.
I get around 300 miles per tank.

Air in the fuel system from the leak.

My 190k D2 fires over without the plugs..

But i use them anyway

TD5's are thirsty my TD5 does 23mpg.

You should be able to achieve 26-28mpg from a TD5 Defender if driven with respect.

lf there’s backlash in the transmission it can make the vehicle difficult to drive smoothly, particularly when changing gear, you will most likely find that it needs new rear drive shafts and drive members.
The front drive shafts will be OK but change the front drive members.
It’s an easy job.
The parts will cost you around £150 and it will transform the Land Rover, making it so much better to drive.

Is the fuel pump whining ? if it is then you have a problem of air or other gasses in the fuel line, most common causes are the Fuel pressure regulator on the LHS of the cylinder head, you may see the diesel running down the rear of the engine or bell housing, or it may be thet the injector seals are allowing combustion gas into the fuel system, solution is to change them.

Sometimes the problem comes from the fuel filter under the driver’s side rear arch, can start to leak or even the casting becomes porous.
All of these subjects have been coverd on threads in this forum, if you search there is some good information to be found.
re the injector seals : http://www.discovery2.co.uk/Injector Seals.html

Thanks everyone for your help. You all state they fire up without plugs, so I spose me waiting for the light to go out and the glow plugs being duff isnt the issue.

raywin said:

Is the fuel pump whining ? if it is then you have a problem of air or other gasses in the fuel line, most common causes are the Fuel pressure regulator on the LHS of the cylinder head, you may see the diesel running down the rear of the engine or bell housing, or it may be thet the injector seals are allowing combustion gas into the fuel system, solution is to change them.

Sometimes the problem comes from the fuel filter under the driver’s side rear arch, can start to leak or even the casting becomes porous.
All of these subjects have been coverd on threads in this forum, if you search there is some good information to be found.
re the injector seals : http://www.discovery2.co.uk/Injector Seals.html

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Previous owner fitted a fuel filter housing and new filter I'm told. It does look fresh with new brass fittings to be honest. Rear tub has had a cut out to gain access to the fuel pump, but I believe that's some go. I've changed the injector harness and cleaned the reg plug out. There doesn't seem to be a smell of oil in the sump at all to be honest, as that's been off to do the oil pump bolt.

You say whine? I can hear an electric pump as soon as the ignition is switched on, I've never left it to see how long it would stay on for, seems longer than the glowplug light which is 10 seconds on this one, or nearly that.

Still change the fpr and injector washers?

ONE LIFE LIVE IT. D90 said:

Thanks everyone for your help. You all state they fire up without plugs, so I spose me waiting for the light to go out and the glow plugs being duff isnt the issue.



Previous owner fitted a fuel filter housing and new filter I'm told. It does look fresh with new brass fittings to be honest. Rear tub has had a cut out to gain access to the fuel pump, but I believe that's some go. I've changed the injector harness and cleaned the reg plug out. There doesn't seem to be a smell of oil in the sump at all to be honest, as that's been off to do the oil pump bolt.

You say whine? I can hear an electric pump as soon as the ignition is switched on, I've never left it to see how long it would stay on for, seems longer than the glowplug light which is 10 seconds on this one, or nearly that.

Still change the fpr and injector washers?

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In my experience the pump sound is a definite whine fairly high pitch, when it gets air in the system. Did you try purging it an see if it sounds different? Mine did.
It's not the best thing to just change things and see if it works, but its difficult to track problems on these systems.
You can make a check on the FPR by taking out the fuel temperature sensor and fitting a pressure gauge, you should see 4 bars there.
There is a small bleed valve on one of the filter feed hoses, if you take it out and it has black muck in there then it may be the injector washers need to be done, it pays to fit a new bleed valve at the same time.



https://www.landyzone.co.uk/land-rover/td5-fuel-issues-starting-issues-fix.319376/

Hi the glow plugs are controlled by the engine coolant temperature sensor, which then the ecu decides how long to operate them for depending on temperature, at the moment they will stay on for a while as it’s been quite cold out, once the engine is running the glow plugs continue to stay on until the engine reaches a certain temperature (about 5 mins at idle), you should make sure that you’re battery is a fair size and is in a good condition because TD5s hate low voltage... get the fuel pressure regulator replaced, otherwise it’ll fail the MOT and probably not run so nice either, oh and obviously leak fuel all over you’re starter motor and the road underneath it...

Am monitoring my mpg - I treated the fuel system and flushed the engine prior to a full service (oils & filters) . I used a BG... (can't recall the references but got the tins / additives online via 'performance enhancers' I think. I used them on my LR3 and it helped with things like the EGR valves etc. First tank of fuel after service worked out at 30 mpg - still half of the tank had the fuel cleaner additive in it - with around 90 miles of motorway and the rest small lanes around the Peak District. I drive like an old fart, think we reached 65mph on the M1 briefly before I bottled it and dropped back to 55mph. I use a fuel conditioner as I fill up at Morrisons and their fuel while cheep is lacking - I learned the hard way with my disco3. Never had fuel issues since.
So far my 110 TD5 with 150k on the clock is doing ok, Got some fluid leakage which I have to trace in the engine bay. Starts up quick n easy when glow plug light goes out (4 or 5 seconds) - the fuel pump did whine for 10 seconds or so when I first got it - not done it since service - I can hear it running while waiting for the glow plugs - but its not a whine.

My TD5 was a Discovery, but still the same engine.
Temp was always under half.
Fuel pump noise is probably down to an after market lift pump in the fuel tank (not the injector pump at the engine) I fitted an after market one that did this, I just turned up the stereo.
Never jerky, but the TD5 does have a tendency to stall.
Economy was very good in my oppinion. The discovery was getting 31mpg+ on a motorway run. The Defender is less streemlined so 26-28 should probably be closer.
Starting was always easy.
I was so happy with my TD5 that at the point of going to look at buying my 200Tdi defender I seriously considered swapping the engines. I didn't in the end because I found that the 200 had just had a full rebuild and new turbo and had comparable power to the TD5. Less complicated too.

Val.

Val. h said:

My TD5 was a Discovery, but still the same engine.
Temp was always under half.
Fuel pump noise is probably down to an after market lift pump in the fuel tank (not the injector pump at the engine) I fitted an after market one that did this, I just turned up the stereo.
Never jerky, but the TD5 does have a tendency to stall.
Economy was very good in my oppinion. The discovery was getting 31mpg+ on a motorway run. The Defender is less streemlined so 26-28 should probably be closer.
Starting was always easy.
I was so happy with my TD5 that at the point of going to look at buying my 200Tdi defender I seriously considered swapping the engines. I didn't in the end because I found that the 200 had just had a full rebuild and new turbo and had comparable power to the TD5. Less complicated too.

Val.

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I'm sure there is only the one fuel pump on a TD5, its in the tank

potus said:

I'm sure there is only the one fuel pump on a TD5, its in the tank

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Surly there is the injector pump on the engine. The tank pump isn't lifting the fuel at however many bar is needed for the injectors?


Val.

There is only one pump on the TD5, it has a low pressure first stage sending fuel the the filter which then goes back to a high pressure second stage, then it goes to the fuel pressure regular and then the fuel is compressed from around 4 bar to an ultra high pressure (over 1000 bar) by the mechanical action of the injectors which are driven by the cam shaft, fuel returns back via a fuel cooler.

Just checked. As I thought, is just the one pump in the tank, has a low and high pressure side and provides all the pressure for the injectors via a pressure regulator.

Scooby22 said:

There is only one pump on the TD5, it has a low pressure first stage sending fuel the the filter which then goes back to a high pressure second stage, then it goes to the fuel pressure regular and then the fuel is compressed to an ultra high pressure by the mechanical action of the injectors which are driven by the cam shaft, fuel returns back via a fuel cooler.
View attachment 194882

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potus said:

Just checked. As I thought, is just the one pump in the tank, has a low and high pressure side and provides all the pressure for the injectors via a pressure regulator.

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Well that's clever, you learn something new each day. Keeps it simple.

potus said:

Just checked. As I thought, is just the one pump in the tank, has a low and high pressure side and provides all the pressure for the injectors via a pressure regulator.

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The pump in the fuel tank provides fuel to the chamber in the head at 4 bar, the injectors take this fuel in and by the action of the cam shaft they inject the fuel into the cylinders at extremely high pressure, so the injectors are like individual pumps, and there is no need for the usual fuel pump.

I have the same vehicle except its 2001. You say its noisy I assume that's because the centre silencer has been removed. You say its feels jerky when driving.I has the same issue especially at low speeds. It felt like is wanted to kangaroo. Eventually traced it to and sorted it by swapping the ECU with a secondhand unit.