Ultra low sulphur diesel (city diesel, ultra diesel etc ) have been found to shrink something important in your life......the seals in your injection pump!
The head seal usually goes first (like mine) or the IQ body seals (nasty) and the pump drips fuel constantly. But....there is a solution or 2.
First, you can buy seal kits from dieselgeek.com, US site, not quick delivery but cheap enough for seals. Replacing seals is not for the faint hearted, or those with sparkling unused halfords toolkits however, there are a few caveat emptor's, like when doing the head seal, the pump has to be "on the cam" and a special screw used to prevent it coming a millimetre out further than needed to change the o ring, or the pump guts fall inward and you are screwed. "What, proper fcucked?" "Yeah, proper fcucked Tommy..." as they say in one of the most awesome films ever, Snatch. Cheers Guy :thumbsup:
So....on to a fix that doesn't involve spanners, or even a screwdriver. Stops the leak completely and you just have to change one habit.....
Find a station thats sells (Tesco) black handle diesel, that says "Contains 7% Biodiesel" and use nothing but that, and I mean nothing, and the seals will swell up and stop leaking like they were meant to do on the old dino diesel. When ULSD was introduced in the USA in 2007 there was a rash of Vag TDi's coming in with leaking injection pumps, and they traced it to the diesel, all the so called "clean diesels" like City and ULSD are bad for the rubber seals, unless like modern motors they are made of Viton instead of rubber, DieselGeek's kits are Viton but its easier to switch to only buying semi-bio to stop the problem in the first place.
Mine has stopped leaking after 3 days on SB, goodd performance and now its boost is right its pulling like a train and no codes, ok City Diesel gives it more punch but it used to leave a puddle of diesel on the ground every time you parked, about a litre (the pump body contents) which means cranking more to start when sat overnight, increased pump wear as it runs empty till it fills, all that jazz.
All because of a change of fuel. So if you have a B5 TDi 1.9 or 2.5 with a Bosch VP pump (not the PD motors - they are Viton where any seals are fitted and they have no injection pump) then use the semi-bio, as full strength B99 biodiesel is found to strip the crap left by dino diesel off the tank and pipes, and block the fuel filter, so a new one is needed before and after switching, but the regular 5% or 7% semibio is gentler and better to get the car used to it, as it cleans the fuel system more slowly so eventually its clean as a whistle and you could run B99 if you wanted. Its cleaner, its greener, and its no dearer. Its the regular diesel sold by Tesco with the black handles, dead easy fix eh? lol.
The head seal usually goes first (like mine) or the IQ body seals (nasty) and the pump drips fuel constantly. But....there is a solution or 2.
First, you can buy seal kits from dieselgeek.com, US site, not quick delivery but cheap enough for seals. Replacing seals is not for the faint hearted, or those with sparkling unused halfords toolkits however, there are a few caveat emptor's, like when doing the head seal, the pump has to be "on the cam" and a special screw used to prevent it coming a millimetre out further than needed to change the o ring, or the pump guts fall inward and you are screwed. "What, proper fcucked?" "Yeah, proper fcucked Tommy..." as they say in one of the most awesome films ever, Snatch. Cheers Guy :thumbsup:
So....on to a fix that doesn't involve spanners, or even a screwdriver. Stops the leak completely and you just have to change one habit.....
Find a station thats sells (Tesco) black handle diesel, that says "Contains 7% Biodiesel" and use nothing but that, and I mean nothing, and the seals will swell up and stop leaking like they were meant to do on the old dino diesel. When ULSD was introduced in the USA in 2007 there was a rash of Vag TDi's coming in with leaking injection pumps, and they traced it to the diesel, all the so called "clean diesels" like City and ULSD are bad for the rubber seals, unless like modern motors they are made of Viton instead of rubber, DieselGeek's kits are Viton but its easier to switch to only buying semi-bio to stop the problem in the first place.
Mine has stopped leaking after 3 days on SB, goodd performance and now its boost is right its pulling like a train and no codes, ok City Diesel gives it more punch but it used to leave a puddle of diesel on the ground every time you parked, about a litre (the pump body contents) which means cranking more to start when sat overnight, increased pump wear as it runs empty till it fills, all that jazz.
All because of a change of fuel. So if you have a B5 TDi 1.9 or 2.5 with a Bosch VP pump (not the PD motors - they are Viton where any seals are fitted and they have no injection pump) then use the semi-bio, as full strength B99 biodiesel is found to strip the crap left by dino diesel off the tank and pipes, and block the fuel filter, so a new one is needed before and after switching, but the regular 5% or 7% semibio is gentler and better to get the car used to it, as it cleans the fuel system more slowly so eventually its clean as a whistle and you could run B99 if you wanted. Its cleaner, its greener, and its no dearer. Its the regular diesel sold by Tesco with the black handles, dead easy fix eh? lol.
