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Testing For Air Leak In The Fuel System
Posted 18 November 2012 - 12:40 PM
how does it work exactly, is it if i rev the car hard and notice a steady stream of bubbles which confirm if there is a leak or not
Posted 18 November 2012 - 04:19 PM
Posted 18 November 2012 - 04:28 PM
yep badman thats what i did i got a feed pipe in a scrappies that is the pipe which goes fromm the filter connection to the pump connection feed . i think its the feed marked by the arrow pointing out from the filter spout . what I did was i got the pipe which goes to a clipped connection over the timing chain cover it s about a foot or so long and so now you have a pipe with clipped connector at either end ..one end on the filter .the other end goes to the clip over the timing chain so I cut a section out of this and fitted a transparent piece of hard plastic pipe .somewhat like biro plastic but circular . [i got this at off a plastic kids toy but im sure it could be sourced elsewhere . anyway I managed to insert this into the cut piece of fuel pipe on both sides and secured with two jubilee.clips.. the reason you need hard pipe or good strong pipe is that the pump sucks or vacuums the fuel from the tank via the filter using the main injector pump on the tdci.. engine ... and you wont need to rev the stones out of the engine either .. to see the results if it is indeed drawing air . you will immediately see a succession of air bubbles being transported along the transparent pipe . some few bubbles is normal .. say ten bubbles i two minutes the pump can handle but .. a succession of bubbles will mean the pump is trying to compress air and this will affect the compression of the fuel to the injectors and make the engine run awful.. s
Hi Salta, i think i know what you mean, plastic clip in between two hoses with jublees on either side.I will give it a go, i did the leak off test and my injectors are fine.So its either leaking or the IMV has be changed.
Posted 18 November 2012 - 04:29 PM
Posted 18 November 2012 - 04:49 PM
Posted 18 November 2012 - 04:55 PM
is there anything else on the pump that may need changing?
Posted 18 November 2012 - 05:41 PM
Posted 18 November 2012 - 08:39 PM
What symtoms have you got i did a leak off test on my old injectors and were all fine after it started pinking like a nutter just when the turbo come on boost and white smoke on start up but after changing injectors and all was fine.
Car drives fine plenty of power and no smoke but occasionally goes into limp mode with code P0251 usually noticed it when I change gears sharply or set off from stationary position
Posted 18 November 2012 - 09:15 PM
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