air leak pick up line ford 2.8 v6

[carbon1993]

Hey guys,

i have a problem with my engine. it sat for a while and now with cranking i have no oil pressure unless the pump speed is very fast. i guess i have an air leak some where in the pick up line. So it will rather suck air than oil unless the pump is on full speed. and then it is good for a while. And when sat for a while again no pressure.

I have had this problem 1 or 2 times before with an other engine.
And i am curious what causes this! This problem only strikes me so far nobody i know had this.
Do you have any ideas?? i was thinkig that maybe being rough with the ignition drive/module could do this?

also i talked with tickover and they said they never put a gasket between the pump and block. is this advisable to do or not?

Edited by carbon1993 on Wednesday 29th May 18:20

[Novexx]

Dirty pick-up strainer, loose pick-up pipe, damaged pick-up pipe, dodgy pipe or pump gasket, U/S pump relief valve, dodgy drive. Parts diagram here;

http://www.fordopedia.org/parts-catalog/20-23-28-v...

[carbon1993]

I had a look there. going to drop the sump tommorow i am already certain what the problem is. but i dont get why its failing all the time....

[GreenV8S]

carbon1993 said:

i am already certain what the problem is. but i dont get why its failing all the time....

How can you be certain while not understanding the problem? That makes no sense.

[Sardonicus]

You will struggle to see oil pressure just cranking over with spark plugs fitted and a dizzy driven oil pump (half eng speed) to be fare if this is what your doing

[njw1]

Sardonicus said:

You will struggle to see oil pressure just cranking over with spark plugs fitted and a dizzy driven oil pump (half eng speed) to be fare if this is what your doing

I've had a couple of 2.8 Colognes and neither of them made good oil pressure at low revs, on the last one I had, during warm weather, the oil pressure light would flicker when it was idling.

[Sardonicus]

They are an high volume system not pressure all the standard Cologne's I have seen run about 45 psi hot at mid RPM and around 20 at idle