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Should TD5 fuel pump, pump out if the filter is removed and key to II

Hi,

I've gone through I think all the posts but cannot find the answer to this.

Should TD5 fuel pump, pump out if the filter is removed and key to II on a Discovery TD5 (December 2002)?

The reason I ask is:

I have what appears to be a common issue with my TD5 Discovery. It has developed a stutter as if suffering from fuel starvation and got worse over a week of short runs.

Got a new fuel filter and thought I'd check to see if the fuel pumped out was clean whilst the old filter was off. To my surprise no fuel was pumped out when the key is at II. I thought to prime these things we turn the key to II for ~30sec then off for ~15, six times.

Fitted the new filter and hope there is a pressure / safety check to stop fuel being pumped out.

I went through the motions - turn key to II for ~30sec then off for ~15, six times and it starts, however, then it stops after 5mins of tick-over and a run up and down a 20m driveway.

Now it will not start.

There is some fuel in the filter now, but could the engine have drawn this through? Perhaps this is how it has been running this week until now.

Tried starting as if run out off fuel and the engine check lamp comes on after 4/5 seconds and sometimes the rear suspension lamp, accompanied with beeps!

Checked the pump fuse and OK

Other questions that have come to mind:

Is there a relay? Can I swap the relays over that look the same to check them?

Where do I find the best access to the electrical feed to the pump?

It is not obvious to me how I access the fuel pump. Do I need to drop the tank? I read a post suggesting that it should be possible to do through the floor but it is a 7 seater and the interior seams like it will be more work to remove than dropping the tank!

Any help would be appreciated

Reply to
Rend
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Rend, I am not sure about the TD5 set up but, the basics are if you introduce air into the fuel system it has to be bled out.

Having looked on the RAVE set up I have you should identify the fuel feed to the filter and slacken this off, then have somebody turn the key to the prime position and let the fuel flow until no more air comes out the feed line and retighten.

On the older mechanical LR systems there are numerous bleed screws and a sequence to follow. I can only asume the same applies to the TD5

Cheers Grant

Reply to
Grant Jump

FUEL DELIVERY SYSTEM - TD5 ADJUSTMENTS

Fuel system purging $%19.50.07

If the vehicle runs out of fuel, or the fuel level is so low that the fuel system draws air into the fuel rail, the fuel rail will need to be purged before the engine will start. This can be achieved by following the procedure below.

If this procedure is carried out on a vehicle that has not run out of fuel or otherwise drawn air into the fuel rail, it can lead to the engine flooding and failing to start. Purge

  1. Turn the ignition switch off and wait 15 seconds.

  1. Turn the ignition switch to position II and wait 3 minutes (this ensures that the fuel system purges all the air from the fuel rail within the cylinder head).

  2. Fully depress the throttle pedal.

  1. Keeping the throttle pedal fully depressed, crank the engine.

  2. As soon as engine speed exceeds 600 rev/min, release the throttle pedal and the ignition switch.The engine must not be cranked continuously for more than 30 seconds at any one time.

  1. If the engine fails to start, repeat the above procedure.

Hope this is clearer (as mud?) Grant

Reply to
Grant Jump

There is something like that to start the filter purge sequence, though I thought the number was 5.

I had the filter changed on my DII TD5 and there was all manner of loud wines and squerging noises coming from the back end for quite a long time, several minutes. These noises would have been a bit worrying if it hadn't been the service manager at the Land Rover dealers that had changed the filter and started the sequence and about 1930 one evening...

Reply to
Dave Liquorice

Just searched through my RAVE trying to find this. I thought perhaps there maybe a difference between changing the filter and just running out of fuel. But it appears not, there is no reference to any special procedure required after changing the fuel filter and the only purging reference is the same as that already posted.

Seems switch it off for at least 15s switch on and let it get on with it for the 3 minute timeout of pump run without engine start.

Reply to
Dave Liquorice

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