ScottMk Posted July 17, 2020 Report Share Posted July 17, 2020 Hi all, I replaced my fuel pump as the diaphragm looked to be weeping (see pic). With the new fuel pump installed fuel leaks from the float breather holes. I fitted the old pump back on again and the breathers do not leak. This is telling me the fuel pump is putting out to much pressure. Has anyone else come across this? Link to comment Share on other sites More sharing options...
Colin Lindsay Posted July 17, 2020 Report Share Posted July 17, 2020 If you look at the witness marks of blackened fuel residue that actually looks to be blowing back from the inlet pipe; it starts around the screw-in connector and continues across the top, well above the diaphragm, before running down to the horizontal surface. I'd try to clean the old pump up and address the leak at the inlet. There's currently a thread on here concerning the wrong type of pumps being currently supplied that are putting out too much fuel: Link to comment Share on other sites More sharing options...
ScottMk Posted July 17, 2020 Author Report Share Posted July 17, 2020 Hi Colin, it appears to be weeping from the screw in inlet pipe, took it out and it looks to have a hair line fracture on the pipe end. Can you buy this pipe buy it’s self at all? Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 17, 2020 Report Share Posted July 17, 2020 is this a olive or a flare I can flare pipe , should have some lurking what size diameter ??? is/does the pump have a olive seating or a flare seating ??? Pete Link to comment Share on other sites More sharing options...
NonMember Posted July 17, 2020 Report Share Posted July 17, 2020 I think it'll be an olive. They are available from specialists but you need the imperial size, not the "close but no cigar" metric equivalent that's dead common. Link to comment Share on other sites More sharing options...
ScottMk Posted July 17, 2020 Author Report Share Posted July 17, 2020 I’ll take it out again in the morning, it might have the olive seating from memory and the olive be cracked. Link to comment Share on other sites More sharing options...
Peter Truman Posted July 17, 2020 Report Share Posted July 17, 2020 I had to replace a cracked olive several years ago on the pump inlet. The outlet I've always had to gorilla down allowing for the alloy pump body Recently I upgraded to a Facet cube elect pump in the boot and on closer examination of the old mech pump outlet pipe the olive has seriously crimped/swaged down into the steel pipe such that the pipe will have to be replaced, I initially thought the pipe might have been cracked the swaging was so severe. I have soldered the olives on before today to ensure they are sealed to the pipe. For interest the elect pump setup has a drowned or positive suction the Vitesse/Herald fuel tank drain has been modified so the outlet pipe passes through it rather than the normal Triumph tank outlet thro the top! Facet pumps specify a max of 13in negative suction and they are dead on, using the original thro top outlet pipe would have been line ball! When I get up I'll attach a photo of the modified tank outlet Link to comment Share on other sites More sharing options...
ScottMk Posted July 18, 2020 Author Report Share Posted July 18, 2020 A cracked Olive, where do I find these? Can’t find them listed on Moss or Rimmers Link to comment Share on other sites More sharing options...
Colin Lindsay Posted July 18, 2020 Report Share Posted July 18, 2020 https://www.jamespaddock.co.uk/search?q=olive That's both the 1/4 and the 5/16 version, if you need any other size let me know. Link to comment Share on other sites More sharing options...
KevinR Posted July 18, 2020 Report Share Posted July 18, 2020 6 hours ago, ScottMk said: A cracked Olive, where do I find these? Can’t find them listed on Moss or Rimmers The olive has split because the pipe has two olives on it and the one that has split has been forced over the other one - just remove the split olive and the pipe should seal properly, unless the other olive has also been damaged. Link to comment Share on other sites More sharing options...
ScottMk Posted July 18, 2020 Author Report Share Posted July 18, 2020 Yeah I noticed that, I removed the second olive but the 1st one is damaged also. I have ordered a new olive from James Paddock, better to be safe than sorry. Thank you for all the comments so far, great amount of knowledge here Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 18, 2020 Report Share Posted July 18, 2020 it is worrying that people do repairs of this dodgy nature , why on earth would anyone with a brain do such a repair , how are you brakes ???????????? pete Link to comment Share on other sites More sharing options...
ScottMk Posted July 19, 2020 Author Report Share Posted July 19, 2020 I know what you mean Pete, it’s the things that aren’t visible that worry me. I have been over the whole car and most seems okay. Found an issue with the dash lights but I’ll post that in the electrical section. Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 20, 2020 Report Share Posted July 20, 2020 as my Dad always said they have more reasons to sell it , than you have to buy it pete Link to comment Share on other sites More sharing options...
ScottMk Posted July 22, 2020 Author Report Share Posted July 22, 2020 Little update, both of the olives on the pipe were cracked and damaged, also the end of the pipe wasn’t flared so the olive wouldn’t of been able to be compressed. All replaced and checked now. IMG_3167.MOV Link to comment Share on other sites More sharing options...
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