relay prob

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topmixer
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Joined: 29 Mar 2005, 23:49
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relay prob

Post by topmixer »

regarding previous postings i have checked for air leak and cannot find any sign , engine struggles too tick over etc UNTIL I PUMP PRIMA CONSTANTLY WHEN ENGINE ABOUT TOO DIE ON ME waht if any does this show ie knackerd PUMP [?]
jeremy
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Joined: 20 Oct 2002, 16:00
Location: Hampshire, UK
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Post by jeremy »

Does you Relay have a separate fuel lift pump? - I don't think it does in which case the lift pump is incorporated in the main injection pump. This pump is not very powerful and the hand primer will have a higher output.
So if the pump is unable to draw enough fuel but the primer is then there is probably a fault which reduces the input of the integral pump below what is necessary for the engine to run unassisted at idle.
From what you say the engine functions properly otherwise so there's nothing likely to be wrong with the high pressure part of the pump or then the lift pump element.
Still sounds like filter or air. Poor joints often admit air but do not leak fuel.
jeremy
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