Member Since: 05 Aug 2021
Location: Mansfield
Posts: 3
Fuel line bleed procedure
Just swapped a inlet manifold on the disco 4 3.0tdv6. Just about got it all back together.
Can anyone please tell me the procedure for bleeding the fuel line once all back together before starting the engine up.
27th Jan 2022 9:37 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5052
Cycle the ign key on 3 or 4 times for 20 seconds each time. Alternatively bridge the pins 3 & 5 at the lpfp relay until it's bled through.yµ (idµ - eAµ) ψ=mψ
27th Jan 2022 9:49 pm
ronald.soak
Member Since: 29 Apr 2008
Location: London
Posts: 534
On the D3, at least, the book procedure is to remove the schrader core from the valve at the back of the engine and to fit a valved extension tube tool. The low pressure fuel pump is then run until fuel, clear of air bubbles comes through, into a container. The pump is run by switching on the ignition for periods of 30 seconds.(It times out if left on continuously).
Practically the valve can be left closed and the pump run for 3 or more cycles until the engine can be started. A middle path can be to depress the valve core whilst the pump is running until fuel comes through. A rag to collect leaked fuel is advisable.
Edit
Sorry Professor G, your post not visible to me when I started posting and I was delayed finishing.
27th Jan 2022 10:25 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5052
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