So I bleed through the oil capillary pipe in case some muck had gone up it or trapped air. Still the gauge said 50psi one minute then 10psi another! If I held the revs at 2000rpm the gauge went up to 50psi but slowly dropped off to 10psi again. I borrowed a mates oil pressure gauge of known accuracy and fitted that and the same result.
So I rang Specialised Engines who have always been happy to to run through stuff with me and don't make you feel foolish if you don't know the obvious. I was informed that on a certain internet auction site someone is selling very poor recon or cheap imported oil pumps as new old stock. I admit I bought a "new" pump from this site. So I dropped the sump off yesterday and pulled the pump off and opened it up.....it was badly scored inside and the end plate had deep grooves in it. Either it was supplied to me in that state, or it's got in that state in only 200 miles!
Bottom end plate. It should be made of steel, but feels softer, looks it too.

Rotor and drive spindle, both scored.

Ford Logo looks genuine though.

The inside has whited out with flash, but is very scored all around.

Obviously I've made the appropriate complaint and await an outcome. But what has it done to my engine
A new pump is on it's way. Genuine Ford brand new with new hardened pencil shaft. costs £74 plus Vat. The other pump cost £55 plus postage, so it wasn't as if it was a bargin.
So please beware if you are in need of an oil pump. I can't think of a more important part of the engine to have failed!
Cheers
Wayne.

