When driving through the gears in my focus 1.6zetec i get a pinking noise up to 2000revs,any ideas as to cause
Answers:
Sounds like the valve timing is slightly out, Check timing belt or replace it.
Small dog trapped in your wheel arch
I would take it to Ford garage and ask for a diagnosis test of the car, may cost about £30 depends on area, and then replace the part myself, as it maybe an electrical fault that you wouldn't pick up on yourself
Either the timing needs to be fixed or it needs a decoke.
More than likely its the timing. Get a tune up.
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