Won’t start

I recently broke down in my Td4. Come off the round about changed gear and it died on me, tried bumping it and it started but cut almost immediately. Called RAC who said it was cam sensor.

Changes the cam sensor no joy, got pointed in the direction of HP fuel pump, changed that still won’t start, changed crank shaft sensor, fuel filter under the rear arch and guess what? Still won’t start anyone have any idea? Tried easy start and that don’t fire it up either.

When you say HP fuel pump which one are you referring to?

The one in the engine bay the High Pressure pump

Dont see why you would have changed that first.
Have you checked if the LP pump in the wheel arch is priming wen the ignition is turned on

Yes the LP is priming when the ignition is on. I went on advice for changing the HP Pump

The HP fuel pump is chain driven by the engine, usually only fails by leaking. Pointless changing it,
Was the regulator and o ring replaced when you replaced pump?
Split o ring can cause non starting

Tried regulators prior to changing the pump from working engines. Turning out to be a nightmare this one

fuel rail sensor

It’s cranking but just won’t fire not even with easy start

pardec said:

fuel rail sensor

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I shall check that now, the diagnostic machine firstly wouldn’t pull up any faults at all but now engine management light is on and it’s showing one fault but won’t give me the fault code. I’m currently trying to find a machine to see if I can get the code

pardec said:

fuel rail sensor

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Sorry, just spoken with my mate who’s helping me and he’s changed the fuel rail sensor also

There's no point in replacing sensors willy nilly, as you could be introducing additional faults. If it cut out when running, then that discounts the cam position sensor.
Loosing a rail sensor while running will put the malfunction light on and flag a code, but it would normally still run.
You need to read the code which is causing the light, before throwing more random parts at it.

Sblendid said:

Yes the LP is priming when the ignition is on. I went on advice for changing the HP Pump

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Did you use the correct tool for changing the HP pump? Have you tightened the sprocket nut up to the correct torque?

Yes I went and bought it £62 .

Nodge68 said:

Did you use the correct tool for changing the HP pump? Have you tightened the sprocket nut up to the correct torque?

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Nodge68 said:

There's no point in replacing sensors willy nilly, as you could be introducing additional faults. If it cut out when running, then that discounts the cam position sensor.
Loosing a rail sensor while running will put the malfunction light on and flag a code, but it would normally still run.
You need to read the code which is causing the light, before throwing more random parts at it.

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I’m just trying to locate a diagnostic machine to read the faults. I’m buying a fiesta next lol

Sblendid said:

Yes I went and bought it £62 .

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Wasted money really as the HP pump doesn't go wrong, they just start leaking.

Sblendid said:

I’m just trying to locate a diagnostic machine to read the faults. I’m buying a fiesta next lol

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The Icarsoft I930 will read and clear codes on the TD4, and is under £100.

I'd put back all the items changed and start again.

Nodge68 said:

Wasted money really as the HP pump doesn't go wrong, they just start leaking.

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Typical isn’t it just want my car back.. was holding onto the hope it would be worth it.

Nodge68 said:

The Icarsoft I930 will read and clear codes on the TD4, and is under £100.

I'd put back all the items changed and start again.

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I’ll take that advice I think

Won’t even fire on easystart? That sounds worrying, but I find it gets lost in the long intake path. Make sure you’re spraying it right into the manifold, right at the EGR.

Do you get a rev counter reading when cranking? Could be the crank sensor if not.