TrevCos

iTrader: (1)

Hi guys, if anyone knows me they'll know I already have a Mondeo ST TDCI as my daily runner.

I've also now bought a non-running 2005 55 plate Mondeo LX TDCI 2.0 6 speed. Now before I bought it the guy selling told me he had run it out of diesel and he couldn't get it to start after that. So I thought it would probably just be a cause of filling the fuel filler to prime it up again (because I know you have to do this on my ST TDCI or it's a git to start after a fuel filter change. So I did that and put plenty of diesel in, but it won't run or fire. I did try spraying some easy start into the airbox and it did cough and splutter a bit as if it was going to start, but it does seem to have some sort of fuelling fault.
It's not showing any fault codes on my reader and the chap reckoned he'd already had the injectors tested and they were all fine.

Now I've bought a new high pressure injection pump for it but before I go through all the hassle of trying to fit that I wondered if anyone else has had similar problems and whether that was the solution, because I did actually wonder if it might be the pump in the tank that's at fault.

What do people think the best way to proceed is? The car itself is really really clean and has only had a couple of owners and done 74k miles, so I'm reluctant to dump it without having a damn good go at getting it going.

Any (sensible) thoughts appreciated.

GVK.

These don't have a lift pump in tank, only the early TDDI has an electric pump on the side of the tank.

Thats why they're so shit to bleed up after any of the pipes have been off.

What are you using to code read it, as I would expect there to be the usual P0251, P1664 fuel related codes in a non-starter....

Needs the injector leak offs testing so you KNOW they are good/bad not just going on the previous guy's say so.

Also gravity feed the pump, funnel and a bit of pipe into the pump, if it starts then, the transfer pump inside the injection pump is not drawing fuel from the tank.

Ideally you need a hand primer inline on these to get them going...

TrevCos

iTrader: (1)

Thanks for that reply mate. If I try the funnel gravity thing do I need to be cranking the car over at the same time, or just run some diesel in then try it?
I've got one of those inline primers but it didn't seem to do much good last time I tried it. Might give it another go though.

GVK.

Gravity feed while cranking.

hand primer on the centre connector on the filter, use it to fill the filter, then connect inline to the pump (our delphi one has an arrow of flow), don't remove it until it starts and keeps running!

TrevCos

iTrader: (1)

Brilliant mate, thanks for this. It's certainly the next thing I'll try before pulling the pump off.

Are there any fuses or relays that might have gone too that I need to check?

GVK.

Anything's possible on these!

Suprised there are no codes?

If you've done the dash self-test thing it doesn't show engine faults.

TrevCos

iTrader: (1)

I've got a proper reader unit. I've also got a laptop and one of those Ford modules (can't remember what it's called) but I've not tried that yet, so maybe I'll give that a go too.

One thing that did bother me is when the car came it had the plug that you put the reader into already pulled down, so someone else has obviously had a go at it. It's annoying, because as I said it is an exceptionally clean low mileage car.

GVK.

If you have access to live data on the lap top worth checking fuel pressure on cranking, needs to be at least 250bar to start. NEEDS to be primed first though.

You can check also the max pressure by disconnecting the brown plug on the pump (IMV inlet metering valve) and the injectors, and crank it for 5 secs, a good pump and injectors will be about 1200-1600 bar, any less and you have excess leak off on the injectors or a useless pump.

They're a good car, until they go wrong.. like anything.

TrevCos

iTrader: (1)

Thanks for all this info mate, just hope I haven't bitten off more than I can chew with this one.

studabear

When I change the fuel filters on these If I don't have a can of diesel to fill the new filter I remove the return after it comes out the filter a bit down the bulkhead then use a sucker pump to drag the fuel through, as once it comes through there plentiful the whole system should be good to go.

GVK.

Thing is if its been opened and cranked full of air can be a shitter to get right again, worst thing you can do on these is try and start them without priming them , ain't it

TrevCos

iTrader: (1)

Thanks for all this advice guys, lots of things to try before I start dismantling things.