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Dr Diagnostic

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  1. Hi Guys, As the fuel filter is being replaced as well, this could collect any particles that remain in the system but possibly only when the fuel is cold. The TDCI fuel system doesn't return diesel to the fuel tank until it reaches running temperature, so I would guess that would only be a problem when cold. Ford recommend that all the fuel lines are replaced, this isn't only because there may be particles remaining in the fuel system but also because of the fuel pipes that are of the 'crush fit' type which means that they should only be used once as the flange that gives the seal on the union could fail under the very high pressures of the common rail fuel system. They even recommend replacing the feed pipes that connect to the injectors when ever they are disturbed but I've not had a problem yet, it's really just a precaution but if you see any signs of leakage afterwards then I would replace them asap. May I add , that if the cam case hardening has failed in the fuel pump you will almost certainly need to replace the injectors as the tolerance of the injectors to pass debris through them is only around 2 microns, which is how good the fuel filter has to be to protect the injectors, so don't go for a cheap aftermarket fuel filter and pay the extra and get one from Ford or Delphi. Can I suggest that you get a second opinion as Ford often seem quite happy to do unnecessary work from what I heard. Hope that helps. DD.
  2. Hi Guys, There seems to be some confusion here regarding the meaning of the flashing glow plug light. All that the flashing light is indicating is that a DTC (Diagnostic Trouble Code) has been recorded by the PCM (Power Control Module) and this is just a warning to the driver that he/she will need to seek advice. There are hundreds of faults that this could relate to, some are a simple fix and some not, I have a full list on my Laptop. Before you start worrying about this and that and what someone else did, you really need to find out what the fault code is that has been recorded as this will lead you more or less straight to the source of the problem. If you are unable to read the fault codes yourself you may if you wish contact me and I'll help you if I can. You can also buy Fault code readers from eBay but I wouldn't recommend them as they have proven in my experience to be most unreliable. Example:- one device showed no code present when I found Six using my equipment. Things you can try: It has already been mentioned about the ICU (Injector Control Unit) earth connection under the battery, so try that as this is a very common cause for ICU to loose the injector calibration codes on early Mondeo's 2001 - Jun 2003. You will still need to get your injectors coded in to the ICU again but if you have fixed the bad connection you shouldn't loose them again EGR valve, it's not your friend and will at some point cause you problems. When they get gummed up with carbon they can stick open, the results are lack of performance and poor running. Cleaning will cure this problem but to really fix it you need to block the EGR off completely. There are various ways of doing this depending on your model. After making any changes to the inlet or exhaust/EGR system it might be a good idea to reset the ECU so the ECU can learn the changes. On MK3 Mondeo you will need to disconnect the battery for about an hour to be sure and after you reconnect it you will need to reset the electric windows and radio code, so while your doing that let the engine idle until it reaches running temp. Then increase the revs to as close to 1200rpm and hold them there for 2 minutes. After this drive it at varying speeds using the full range of throttle movement basically "drive it like you stole it" for about 5 miles, this should complete the re-learning process. Following this reset procedure will not necessarily fix a fault or clear any stored DTC's as someone previously said. If you have smoke from the exhaust in the mornings and poor running you more than likely need a new injector or two or it could be a split intake hose if this happens all the time. I would never recommend recon injectors as they are rarely fully reworked and are sure to fail again in around 20,000 miles if your lucky. Either new or recon injectors have to be coded to the ICU, you can't just swap them over with the dud one. Driving your car with faulty injectors is going to cause you more problems as a faulty injector can be over fueling and flooding the exhaust system with diesel, some of this is going through your EGR valve and back in to the engine and washing old carbon deposits with it, this can also gum up the Turbo on Variable vain types. So, if you have a flashing glow plug light, get the DTC read and find out why because delay can be costly. Remember, if I can help you I will and I'm cheap 'n' mobile. Dr Diagnostic. Not bad for a first post.
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