Vehicle & Technical > Discovery
Getting well narked now.
muddyjames:
--- Quote ---The quote above suggests you have bypassed the lift pump altogether on the diesel side??? is that correct as understood? , have you fitted an additional pump on the diesel supply or can you elaborate on how the fuel is pumped from each tank??
--- End quote ---
that is indeed correct. My new diesel tank which is in the boot where a dicci seat used to be. As far as I understand it (Dr Ed please help here) the diesel runs from tank direct to change over valve then into the injectors.
The veg oil runs as it always used to do when on diesel except it has a change over valve to flow through and the heat exchanger.
How do I do a compression test? Sounds mega scary to me.
electricbluebadger:
To be honest I wouldnt run without the lift pump, the fact that it runs fine with veg through the lift pump suggests this, You may have alleviated some of the strain on the distribution pump by having the tank in the boot (ie higher than normal so slighly gravity assisted) but Landrover did fit it for a reason and it does alleviate the stress on the dist pump.
the bulb will be seen to collapse as it is weaker than the weight of fuel the pump is attempting to pull along the line, ie all the fuel in the line from the bulb to the tank.
One option would be to 'T' the oil line into the diesel line before the lift pump, you would need to fit the heater in the oil line before the lift pump as obviously you DONT!! want to be heating the diesel under normal conditions if you have a veryeffective heater. VOW go into details on there site with their range of inline glowplug powered heater elements.
Have you tried starting with a couple of the injectors cracked to allow any air to escape, then tighten em once running... if this works it would certainly point to a small amount of air getting in.
Cheers Steve
electricbluebadger:
Where are you located, plenty of people have diesel compression testers and its an easy job.
Cheers Steve
muddyjames:
attatched is my fuel diagram Dr Ed made me.
MY diesel does go through the heater but only for the last part of my journey. About 90seconds ish before the end.
What is a dist pump? I was thinking about getting a small leccy fuel pump off of a 200tdi as I believe they have a pump in thier diesel tanks?
How much do I undo the injectors? 1 turn of a spanner (360 degrees) or less? Injectors are the things ontop of the engine on the left as you look from the front by the sound proofing arent they?
Oh and I am near Banbury/ daventry.
electricbluebadger:
--- Quote from: muddyjames on February 20, 2008, 18:56:05 ---attatched is my fuel diagram Dr Ed made me.
MY diesel does go through the heater but only for the last part of my journey. About 90seconds ish before the end.
What is a dist pump? I was thinking about getting a small leccy fuel pump off of a 200tdi as I believe they have a pump in thier diesel tanks?
How much do I undo the injectors? 1 turn of a spanner (360 degrees) or less? Injectors are the things ontop of the engine on the left as you look from the front by the sound proofing arent they?
Oh and I am near Banbury/ daventry.
--- End quote ---
Direct from VOWS site ( http://www.vow2.co.uk )
--- Quote ---E and F and DW units cannot be fully turned off so are unsuitable if you intend to use 100% diesel at any point. Heated diesel looses its lubrication and must have some veg oil mixed with it. 10% should be enough.
--- End quote ---
Dist pump (sorry) ... fuel distribution pump often also referred to as the injector pump
as for the injectors.. its the nut securing the fuel line on the top that needs to be cracked not the whole injector loosened, a smalll turn to loosen the bolt is all that is needed to allow fuel / air to seep out, once running just tweak it back up, same procedure as if you were bleeding injectors on many non-self bleeding diesels
Cheers Steve
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