hello had a left top hose leak,(mechanic left spare thread of hose clip below top hose pointing up ,rubbed through top hose ) new hose fitted ,where is /are the bleed valve/valves located ,as ive read in classic car mags this is a major cause of overheating ,on v12,and leads to engine damage ,air lock forms in engine ,does not always show overheating on gauge ,photo showing position would be most welcome,please help

 

Welcome to the forum,

Your best bet is to ask this question in the XJ40 section.

 

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Welcome to the forum.

You have a rareish car for this model with a V12.

But we have some V12 experts to help you along.