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Old 14-05-14, 10:01 PM   #1
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Default Suspected diesel pump problems

Can anyone please help!! The other day my 2.2 HDi packed in on the motorway and wouldn't restart. No codes were displayed on a cheapo eBay code reader (have used this in the past for other issues and codes were readable and could be reset). Anyhow, the problem appeared to be the low pressure fuel lift pump in the tank - there was NO sound coming from it at all but there was a 12v feed for 6 seconds upon ignition. I ordered a new lift pump and (with some difficulty and hacking at the metal under the seat) fitted it. Woopeee - nice pump noise could now be heard! Problem was, the car still didn't start. Looking under the bonnet, diesel was squirting out of lots of joints on fuel hoses all around the fuel filter including out of a big metal pipe. I thought a blocked filter could be the culprit but it was not blocked at all. This wasn't happening with the old pump. I reconnected the old pump (not refitted, just connected) and it started running outside of the tank - and it definitely wasn't before. Has the high pressure pump failed, causing the old low pressure pump to temporarily seize (perhaps a dead or flat spot) but has now freed off? Is the low pressure pump now pumping diesel towards the engine but the diesel cannot go anywhere because of a high pressure pump failure hence all the diesel being forced / squiring from the joints in the fuel lines or am I way off base here?? Any advice would be appreciated.
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Old 14-05-14, 10:19 PM   #2
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If the fuel is being forced out the thin spill pipes on top of the injectors then most likely a return pipe TO the tank is blocked.

High pressure pumps don't fail that often to be honest.
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Old 14-05-14, 10:53 PM   #3
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Thank you SO much for such a quick response to my cry for help!! Will investigate that hopefully tomorrow night if I get off work handy enough. Again, thanks! I will of course update this post if that sorts it... feeling=grateful :-)
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Old 16-05-14, 06:54 AM   #4
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Default Pressurised / leaking fuel return pipes sorted!!

Reliable406 you are a gentleman and a genius!! The problem was the BRAND NEW low pressure fuel lift pump made by "fuel Parts" and bought from eBay. If I get no satisfaction from the seller, I will name and shame at a later date. Turns out these units have a one way fuel return valve in the top where the return hose connects. I refitted the old unit, which ran for 10 seconds before dying a death again (original fault with the car). However, NO leaks! This prompted me to compare the two units and blow into the return lugs on the top of each unit. Sure enough, the NEW unit was not allowing me to blown through whereas the old unit was fine. Glad I didn't bin it the day before! I had to remove the new pump from the new unit and refit it in the old assembly and refit to the car. It was very messy and difficult to get the hoses on and off the actual pump but once done, the car fired up immediately and no more pressurised, leaky fuel return hoses under the bonnet. I had to reset the MIL light a couple of times - don't think the ECU took kindly to so much cranking and not firing up. Seems okay now though. BEWARE of copy parts!! I've just learned the hard way that they don't always save money. Again, a MASSIVE thanks to you, Reliable406 for giving me the direction to look towards... I was about to give up completely - thanks to you, I have my old motor running again :-)
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Old 17-05-14, 04:43 PM   #5
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I just can't understand why people get their spare parts from EBay.Unless you live in the Outer Hebridies you will have a GSF or a Euro etc etc not fare away with top quality O/E parts on the shelf at very good prices.Over the counter face to face is the only way to make sure you get the correct part for your car.
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Old 17-05-14, 05:25 PM   #6
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I have had more wrong parts from euro than any other parts supplier I'm sure others will agree
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Old 17-05-14, 06:35 PM   #7
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I phoned my local ECP to see if they had the rear shock absorber top mounts in stock, they said they had so went down. Paid for them and they went and got them. Opened the box before I left only to find they were the front strut top bearings.
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Old 17-05-14, 06:35 PM   #8
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I agree reliable406.I used them regularly years ago when I was in business full time.They started to go down hill around 2007 when the founder sold out and they started everymake parts for every make of car. I would never use them now.
When I listed Euro above I meant that type of business.My local GSF is spot on,they always had the edge over Euro
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