Thread: Td5 fuel pump or something else ?

Originally Posted by sierrafery

Here's a simple test for the pump: Disco 2 - Check Td5 fuel pump HP | LandyZone - Land Rover Forum

I, unfortunately, don't have multimeter that can read anything like accurately below 1V so I measured the current draw with the engine running and the max value was 12.6A. Current with the pump running but the engine not started is around 10.0 to 10.5A.

So, before I fully remove the "stuff" in the rear of the car would you say that this indicates a dead or dying pump or should I just head off in the injector seals direction ?

12.6A draw with engine running is a quite normal draw for the pump, rule the injector copper washers

Originally Posted by sierrafery

12.6A draw with engine running is a quite normal draw for the pump, rule the injector copper washers

Thank you Sir... I suspected that this would be the case but at least some good came out of removing the drawers, etc. I discovered that the carpet in the back is quite wet and now that it's all lifted I can get a heater in there to dry it properly. I'll drag out my spare washers and o-rings and the trusty torque wrench and have at it.
It won't be for a couple of days though which will give a new rocker cover gasket time to arrive...

Yesterday (Sunday) arvo and evening I ended up with a heap of spare time so I decided that I'd make a start on the injector washers. I got to the stage where all I had left to do was to put the rocker cover back on so I just used the old gasket so I could test it without too much oil spraying around the place.

Took it for a drive and all seemed well.
This morning I went to start it and guess what ? No start. Lots of high speed cranking and eventually it sputtered into life. Lots of swearing and cursing...

Changed the fuel pump and took it for a drive - all OK. It's now sitting in the driveway for a few hours to see if the pump really was the culprit all along.

At least I have dry carpet, a new injector loom, new washers and o-rings and a pump that's a whole lot quieter than the old one.

Originally Posted by Markf

Yesterday (Sunday) arvo and evening I ended up with a heap of spare time so I decided that I'd make a start on the injector washers. I got to the stage where all I had left to do was to put the rocker cover back on so I just used the old gasket so I could test it without too much oil spraying around the place.

Took it for a drive and all seemed well.
This morning I went to start it and guess what ? No start. Lots of high speed cranking and eventually it sputtered into life. Lots of swearing and cursing...

Changed the fuel pump and took it for a drive - all OK. It's now sitting in the driveway for a few hours to see if the pump really was the culprit all along.

At least I have dry carpet, a new injector loom, new washers and o-rings and a pump that's a whole lot quieter than the old one.

Well if the pump is a whole lot quieter....

Unless doing the injector stuff stopped Cavitation of course....you might have found the culprit.

It's always handy if you know of another local vehicle you can compare noises and behaviour too.

Originally Posted by shack

Well if the pump is a whole lot quieter....

Unless doing the injector stuff stopped Cavitation of course....you might have found the culprit.

It's always handy if you know of another local vehicle you can compare noises and behaviour too.

This morning the old pump was still very noisy - doing the injector stuff made no difference to the noise or anything else, really.

The new (ish) pump is a LOT quieter. Current draw with ignition ON and engine not running is around 12.5A and current draw with the engine running is 13.5 - 13.7A Up to 13.8A while the bleed process was running.

At this stage I'm blaming the pump.

Whilst you should be able to hear the pump running, you need to listen for it on a D2, if it was very obvious it was running, that would suggest pending failure

Originally Posted by shack

Whilst you should be able to hear the pump running, you need to listen for it on a D2, if it was very obvious it was running, that would suggest pending failure

Now that I've got the carpet and the drawers back in place I can hear it quietly humming in the background. When the engine is running I have no hope of hearing it inside the car. I wish I'd made a recording of the old one screaming it's head off...