Sever power loss at over 4000rpm

2000 Ford Puma 1.7 16v
Car: Ford Puma
Year: 2000
Variant: 1.7 16v
Categories: Running Rough, Starting & Power Loss
i recently bought a puma. when it accelerates over 4000 rpm the power drops right off. doesnt go completely, if i keep accelerating it will keep pulling, just very slowly.

any help would be greatly appreciated. hope this isnt a big job :s

many thanks, steen
Problem added: Jan 15, 2012 (12 years ago)
i should also say that its on an R plate, if this helps at all?
Answered Jan 15, 2012 (12 years ago)
Unless you know it`s been done, i`d start by renewing the fuel filter.
Also check spark plugs and air filter.
Answered Jan 15, 2012 (12 years ago)

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