Gte low oil pressure on idle

[NeilBoylan]

Hi guys having an issue with the manta had the head rebuilt new everything oil light is on I have changed the oil pump switch also had different timing chain cover I am going to do a compression test tomorrow to see what is going on in the bottom end what figure in each cylinder should I have thanks for your help guys 

[cam.in.head]

hi . a compression test wont tell you anything about oil pressure only cylinder / piston pressures !

if the oil pressure was ok before head job then i would suspect that work first . assuming everything was reassembled correctly .

firstly ...is it low oil pressure at idle anx ok above of low full stop ?

[1200bandit]

Have got a 2.0 GTE 1988 82,200 miles,oil pressure at 800 RPM is around 1.5 bar,when cold at 2000 RPM oli pressure 3.0 bar 

when driving about 4.0 bar 

[cam.in.head]

sounds about right 

in theory no lower than 0.5 bar at idle and no higher than 5 at high revs when cold ( atound 3-4.5 warm at higher revs .

all dependant on oil grade . i use 15w/40 or 20w/50( althou they can use thinner !)

 

conpressions are a bit irrelevent realy in this case but dependabt on engine condition ( and make/age/accuracy of tester) my 2litre S gives around 170 psi snd my 2.2's around 210-220 psi .

just in case you were curious snyway

[NeilBoylan]

When the car is warm the red light comes on I am doing compression test to see if I am taking out the engine to get the bottom end rebuilt Andrew abbot  helped out with the rebuild so I know it’s been put  together properly I think the issue is the timing chain cover I have another one to replace it I have changed my oil from classic 20/50 to valvoline racing 20/50 as advised by opie oils the timing cover has been nothing but issues there was no thread for oil filter to screw on to thanks for your help