Jump to content

TD5 noisey fuel pump


ciderman
 Share

Recommended Posts

They go pop quite often, loud "who stepped on the cat" whining noise usually means its time to budget for a new one sooner rather than later, and they are a pain in the butt to change because you have to drop the fuel tank, unlike a Discovery where there is a sensible hatch under the rear carpet. Which is what any Td5 Defender I owned would also have after the first pump ;)

You could leave it till it goes it might last a year or two or it might last another week - Sods law of course it will break at the most inconvenient moment so the decision is yours :)

Link to comment
Share on other sites

They also whine very loudly if there's an air leak into the system.

The push fit conectors on the fuel lines sometimes can cause this, as can a damaged fuel filter head.

Also i've come across head porosity allowing combustion pressure into the fuel line in the head, which in turn air locked the pump.

But it could just be the fuel pump on it's way out.

Link to comment
Share on other sites

I am wondering when a pirate part maker will start making the pump only, rather than having to buy the whole shebang complete with fuel level float etc.

Re your pump only lasting 50k, the way to destroy a pump very quickly is to run out of fuel. The pump does not like this at all.

We had a TD5 in the workshop a week ago that would start and run even though the pump was not running at all. But it wouldn't rev much above 2500 rpm. I was surprised that it would even start.

Link to comment
Share on other sites

We had a TD5 in the workshop a week ago that would start and run even though the pump was not running at all. But it wouldn't rev much above 2500 rpm. I was surprised that it would even start.

They do run as long as no air gets into the system but you're lucky to get up anything resembling a hill without needing low range :)

Link to comment
Share on other sites

Jase we have fitted loads of them, Sometimes the impellar come's loose so they loose preasure and other time's they get noisey and can keep going for a while till they stop. Could be 3 years, could be 3 days. The only sure thing is one day it will stop so may as well bite the bullet and put one in, Save getting stuck somewhere when it does go. The early one's were real bad, the later one's seem a bit more reliable but still not great.

There are actually two pumps in that unit. A low presure one that pumps fuel up to the filter head then back to the pump wher another pump then pushes the fuel forward to the pressure reg on the head at a second higher pressure so it aint as straight forward as just fitting a pump the the fuel tank unit which is probably why none of the fuel parts type companys have produced a replacement yet.

When you refit it you can make the pump "purge" the system by turning the ignition to the second possition then pressing the accelerator right to the floor and releasing it 5 or 6 time's. The Engine management light will then start to flash and the pump will run. Leave it run till you hear a noticable change in the sound of the pump (1-2minutes) then you should be able to start the engine!

Link to comment
Share on other sites

The early one's were real bad, the later one's seem a bit more reliable but still not great.

Absolutely true. We fitted loads of pumps (and injectors and ECUs) under warranty in the early days of the Td5s but the later engines seem to be much more reliable on all three parts, they do still go though. A bit like the injector harnesses, whatever the "official" version is <_<

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy