Disco 1 300tdi fuel starvation

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livers

Well-Known Member
Posts
3,906
Location
suffolk A12/A14 junction
New, to me, disco 300 tdi got it cheap as it had a fuel problem. I have cleaned sedimentor, fitted new lift pump, filter x2, and even leak off pipes. Feed pipe just before lift pump had been cut and rejoined so checked that was clear, can blow fuel from tank to lift pump and lift pump will lift and push fuel round IP and back to tank. stop solenoid is OK. PROBLEM IS it starts and runs fine after priming, runs great for half a mile or so but then gradually dies to tickover then stops and filter is nearly empty. Thought it may be s**t in tank or holed pick up in tank but boot floor has been bodged so can't get in to see. In desperation cut lift and return pipes and ran it from a bottle of clean diesel in engine bay, still the same, so Tank is not problem.
What the hell can I try next?
 
needs to be a very small hole to maintain a working pressure in the pump too large and the fuel just returns,google stc3597 and youll see
 
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