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Mondeo won’t start after 5-6 months sitting

Uk4468
Uk4468
in Ford Mondeo / Vignale Club

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I'm not sure the glowplug light is still used as a fault light on the Mk4 Mondeo?  I know it was on the Mk3.

It's a relic of the past really.  Old IDI diesels were heavily reliant on glowplugs to heat the pre-cups even in what we'd consider mild outdoor temps.  Back then the glowplug light was directly connected to the plugs.  But when direct injection came in around 1999 (common rail & PD) the plugs were no longer 'needed'.  The light was then just timed based on outdoor temperature to provide comfort to people that still expected to see a glowplug light on before starting a diesel engine.

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    • TomsFocus
      TomsFocus

      Yes, but it'll show low fuel pressure until the engine starts anyway.  The high pressure fuel pump is driven directly from the engine so can only create pressure when the engine is running.  That's wh

    • nicam49
      nicam49

      At the start of all this, did you change the fuel filter, 'cos there's a gasket seal that gets placed on refitting under the screw cap instead of under the lip of the filter, and THAT causes air ingre

    • TomsFocus
      TomsFocus

      Sounds more like a fuelling issue. Ideally change the fuel filter and prime the whole system with a hand pump. But if you just want to prove it's a fuel issue then try a bit of EasyStart dir

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    Hi Tom, yeah I'm unsure whether I was giving good or duff advice, seeing as my experience is just with the mk3.

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    On 8/14/2024 at 1:51 PM, Uk4468 said:

    Hi, I know it’s been a while but we removed fuse f4 and the glow plug light still came on? Is this normal?

    Speaking from 12.5 year experience owning a MK2 1.8 TDCi Focus, when tightening the filter housing lid (especially once the housing is old i.e. the one supplied from the factory) you need to get it as tight on as you possibly can. (ask me how I know) 🤦‍♂️

     

    Even the tiniest bit of air ingress and it'll allow fuel to slowly drain back to the tank, and as has been previously mentioned, with no lift pump in the tank, it ain't gonna be happy when you try and start it.

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