what could be the cause?

pulling my hair out lol

its got a brand new Genuine cosworth oil pump
the oil pick up pipe was clean when it went in.....

just hope it hasnt damaged the engine at all..


Its Got to be one of them 2 hasnt it??
pick up or oil pump itself??

i have tried changing oil and weight oil, made no difference.


A not happy, Pee Vee

 

could just be worn bearings and/or crank, or maybe the oilpump drive is slipping, also have you tested the oil pressure switch as these can break as well

Darren

 

all bearings are brand new

tried 2 different gauges on it, both read exactly the same..

 

did u put the gasket in between the drain pipe and pump?

 

yuup!!!

they dont use the O ring for the spray bar anymore
(no cut out for it in the oil pump anymore on 4x4)

but the paper gasket IS there and the bolts are done up as they
should be!! annoying!


Edit: somoene else just said they have had/heard about having a
faulty oil pump from new!? quite concerning

i bought from cosworth direct as thought that would be the best thing to do!!

 

[quote="pee vee"]all bearings are brand new


ARE all the bearings the right size for the crank?

could be down to a faulty pump also

 

yuup
crank is on standard grind. and was measured and polished!
if the bearings were wrong it would rattle i think
and the engine is Very smooth and Very quiet! which is a good sign.


oil pick up pipe was de-greased and cleaned thru


I can only hope that pump is ok,, and that a load of sealer has
broken away ( like spadges the other day)

and i DID use the proper ford sealant for it! AND it was left about a
week to go off before the car was used at all!

but even so,, it could be something like that i guess.

 

If i remember correctly the paper gasket can be fitted the wrong way and blocks half of the pick up pipe. Thus giving low oil pressure. Steve

 

thanks mate.
but i dont know if thats the same with a 4x4 pump?

as the gasket has got to go round both oil pick up pipe

and spray bar feed holes

it could well be something as simple as that.... im half hoping it is!

 

Sorry mate i was talking about the 2wd pump
Steve

 

thanks mate!
still something to look at though, check that the gasket definitly isnt blocking anything !


Am i right in thinking that, Low oil pressure would be Casued by
the Pump not being able to Draw enough oil up?
as opposed to a block in the system somewhere else?


roll on next weekend when i can take the subframe sump and diff off to have a look

 

took the subframe and sump off today...........


oil pick up pipe is clear,,, and so that leads me to suspect the oil pump

i wil send it back to cosworth to see if they can check it out....


bad news being,,, the fukkin engine is a write off..

bearings and crank are socred. so if it DOES turn out to be a faulty oil
pump, where to go from there?

 

if you open up oil pump coat everything with vasoline will get your oil pressure up straight up

 

im past that stage mate! as in when the oil in the car is at operating temp,, there is no oil pressure


to start with i filled the pump with oil, and then spun the pump up with a drill before i put the cam belt on to get pressure, and had a good flow coming out of the turbo feed to, so i know there was oil at the top end eve... so there was no issue there

 

it may seem silly but have you changed the oil pressure switch?

 

yea all that is done..

the engine is written off mate. totally fukked after 2 drives
thats why i started the post in general about oil pump problems

 

hi PeeVee

i have the same problem like you .

i rebuild 2 engines,with all new bearing, (ACL race bearing, first time taht i use its) and higt pressure oil pump

conrod are new
crank is very good

and low oil pressure,
1 engine 1.8b at 900rpm
2 engine 1.4b at 900 rmp

at 4000 rmp, 3.6b

on my sierra RS i have 2.2 at 900 rpm and 5b at 2500 rpm

do you have any information or solution ?

many thanks

 

10 year old thread.!!!!!

 

the problems remains and endures

 

Pressure is just a measure of resistance. I don't think you have enough!
Did you use plastiguage?

 

hi

yes , i use plastigauge.

all clearence mesurement are good

i remove oil plug gallery to clean the engine block, i changed them when i rebuild and, i re-change, i chek them to be sure.
i think they are watertight because oil didn't pass.
but when the oil is hot, maybe she pass trough !

fuc*** oil...