Vehicle & Technical > Defender

Ok, I'm stumped. Ideas?...

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L90OOK:
Your lift pump may have a fine filter that blocks easy.
The veg oil cleans all the rubbish out the tanks & fuel lines.
Try cleaning lift pump.  If that works I'd fit an inline filer between tank & lift pump.
Ask me how I know :rolleyes:
 :afro:

bigfatsi:
Thanks for replying L90OOK,

I've replaced the fuel lift pump (twice!) the lines and the filter housing and filter (twice!). The tank is pristeen so there is no crud anywhere, except possibly the FIP.

Nightmare, huh?

S

L90OOK:
I assume you have had the fuel pick up out & checked for blockages?
What about the unions on filter housing & FIP?   :undecided:

Axetamer:

--- Quote ---Quote from: Axetamer on July 15, 2011, 20:31:40
mine had a filter on the bottom of the fuel pickup pipe actually inside the tank...don't know if this was an original feature or a mod by the previous owner...looked like a metal teabag affair... this kept filling up with sediment in the tank causing fueling problems, I have cut this teabag thing off and have put in a prefilter before the pump.. just one of those clear cheap inline things.  ...a simple cut and insert with a couple of clips...added bonus is you can see the fuel coming through when the engines running helping with diagnosis..

was it a petrol truck once or did tank come off one? petrol90' ones I seen have had mesh filter in tank and caused no end of trouble when tank was fitted to my diesel. Diesel from the pump is full of a crazy amount debris like fibre glass! and those mesh filters clog up in a few miles.
--- End quote ---

Mine was doing exactly what yours is still doing....mine was originally a petrol..now a 200tdi, and would lose power then after the engine was stopped for a while and then restarted run perfectly for about 20miles or so...then gradually lose power..on mine it was this teabag mesh thing causing the problem, once removed problem cured.

To me it seems as if you've a blockage somewhere...could be a leaf or flake of paint, rust or anything like that being picked up, blocking the pipes then falling back into the tank when the motor is switched off?....do you do a lot of offroading?

jimyd:
Still sounds like fuel stavation to me. I have fitted a tempory bit of clear pipe in the fuel line just before the injector pump before, that way you can see if its sucking air in. I have also run tempory fuel lines from a 5l fuel can strapped to the roof to give a 'positive gravity feed' to help identify fuel starvation issues.

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