 | Home > Maintenance & Modifications > Fuel pump mod |
 
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| diesel_jim Member Since: 13 Oct 2008 Location: hiding Posts: 6037   
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Why?
standard pump works well. It won't give you any more power, just more to go wrong IMO. |
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3rd Aug 2018 7:55am |
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| Mash Member Since: 09 Feb 2015 Location: Guernsey Posts: 1674  
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Stick with the original set up, it works well and have seen many wagons do 100,000s of miles running that set up. If you start changing things it adds a more complex diagnosis and then it’s hard to source the correct parts, as not that many companies will stock it, a lift pump on a 300tdi is simple to swap and cheap with no electrics needed, I have run wagons with no electricity for miles to limp them home (obviously in certain areas that there is no public). 90 wolf - Jasmin http://www.defender2.net/forum/topic39408.html
90 V8 - Maggie http://www.defender2.net/forum/topic42564.html 110 TD5 - Buggsy http://www.defender2.net/forum/topic59029.html 52HG25 lightweight https://www.defender2.net/forum/topic72342.html D3 Hse - Fiona Capri 2l S - Anna Think I might have a problem............ |
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3rd Aug 2018 8:40am |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
You be beater off sticking with standard fuel lift / priming pump and have service kit or spear pump
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3rd Aug 2018 9:20am |
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| Retroanaconda Member Since: 04 Jan 2012 Location: Scotland Posts: 2548 
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As an alternative view, it seems from very unscientific observations that replacement lift pumps are generally poor quality and last nowhere near as long as the original might. So it could be an option for some to eliminate a failure-prone part of the fuel system if a reliable solid-state electric pump can be obtained.
The Tdi will run quite happily with no lift pump (albeit not at full power/speed) so limping home after electrical failure is not an issue. |
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3rd Aug 2018 10:40am |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7685 
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on my challenge truck to help the lift pump and ensure i had adequate fuel on steep angles i fitted a swirl pot that was fed with a std RR Classic electric lift pump. the pump ran the whole time the ignition was on and filled the swirl pot and excess returned to the tank. Never had a problem in 8 years or competing with fuel supply.
Range Rover classic electric fuel PRC3901 pumps are very simple and very reliable. i bought a spare at the time of fitting original and sold the spare on when the vehicle sold, first one never failed. Bearmach. https://www.ebay.co.uk/i/263848980739?chn=ps Cheers James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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3rd Aug 2018 10:56am |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7685
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i would still keep std fuel filter regardless of any extra filters being added to system Cheers
James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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3rd Aug 2018 10:56am |
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| Alex1976 Member Since: 24 Jan 2013 Location: Buckingham Posts: 596 
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Thanks for everyone’s comments on this. There does seem to be some mixed views on this both here and on the wider internet.
It does seem that the replacement fuel pumps available are not the best quality so this was one reason I was thinking of changing to electric. Also I have heard from some people running 2.8 TGV units that the 300tdi pump can’t supply sufficient fuel for full power. I have what is essentially a TGV unit - a 300tdi built to similar spec and tuned so wondering if I would be better off going electric. JST - I would be interested in your thoughts on this as you have TGVs I think. The Facet pumps seem very reliable and there doesn’t seem to be an issue with adding this ‘complexity’ to the system. I can still drive at 60 just about with the failed pump. I will have a bit more of a fiddle/think over the weekend. |
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3rd Aug 2018 1:08pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7685
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i ran two TGVs at the same time. the challenge truck had a swirl pot and electric pump to feed the swirl pot. the other drive round day vehicle had a std mechanical lift pump and it would cruise at motorway speeds no problem. i have not heard that the std pump wont provided enough fuel on a tuned tgv.
pacet pumps? why go to the expense. RR V8 ones work perfectly. Cheers James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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3rd Aug 2018 6:15pm |
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| Alex1976 Member Since: 24 Jan 2013 Location: Buckingham Posts: 596
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Cheers JST, sounds like a standard pump is all I need then. Just need to find Genuine or OEM as it seems the aftermarket pumps are poor quality from what I hear.
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3rd Aug 2018 9:51pm |
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| Timcat Member Since: 20 Jul 2016 Location: Tanzania at the moment Posts: 1008 
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Facet pumps are used as replacements for genuine Honda motorcycle fuel pumps & are faultless. I’ve used them for years with no problems. |
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5th Aug 2018 7:10am |
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| Alex1976 Member Since: 24 Jan 2013 Location: Buckingham Posts: 596
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So my Saturday morning job today was to sort out the fuel pump.
First take off the old pump. I unscrewed the top and found all of this in the filter screen.  Click image to enlarge [/img] |
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11th Aug 2018 8:45pm |
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| Alex1976 Member Since: 24 Jan 2013 Location: Buckingham Posts: 596
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After a lot of deliberating I decided to go with an electric fuel pump rather than replacing the failed pump with another standard unit.
I ordered a blanking plate to close off the hole in the block where the pump used to be. Laser cut stainless steel and a new gasket. Click image to enlarge |
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11th Aug 2018 8:48pm |
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| Alex1976 Member Since: 24 Jan 2013 Location: Buckingham Posts: 596
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I went for a Facet Dura Lift 4222 pump. It has an in built 80 micron stainless mesh filter and clear filter housing so it is easy to keep an eye on any rubbish being dragged through from the tank.
I mounted it where the fuel filter used to be and relocated the filter to mount on the radiator frame. I ran a new rubber fuel hose (1/4") from the tank pick up pipe to the pump. A small length of pipe from the pump to the filter and then another small run from the filter to the FIP. Click image to enlarge |
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11th Aug 2018 8:55pm |
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| Alex1976 Member Since: 24 Jan 2013 Location: Buckingham Posts: 596
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The pump only uses about 1.4 amps so its low power consumption. For now I have connected it to a power feed that was spare in the off side wing (brown wire and brown/green wire) which is a fused permanent live. I installed an in line 3 amp fuse and ran it to a switch on the dash so I can manually control the pump. I may change this to auto run from a relay picking up a feed from the engine running.
Priming the new filter was easy - turn on the pump, open the bleed valve, wait fro the diesel to be pump through and then close the bleed screw 
Click image to enlarge |
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11th Aug 2018 9:00pm |
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