hmhaga

This is something to watch out for on high mileage engines! At 205.000 km my MY98 had developed an oil leak (which I initially thought was the front oil seal) and was also suffering from low oil pressure. When removing the oil pump, I found that ALL of the screws pictured were loose. I torqued them down with Locktite, replaced the O-ring and the front seal and refit the pump with new liquid gasket. Oil leak gone and oil pressure up from 40 PSI to 80-90 PSI.

It was only recently that the oil pressure dropped down to 40 PSI, but the engine has been suffering from low oil pressure (60-70 PSI max) at least 3 years - I thought it was due to wear.

swifty.....!

iTrader: (4)

hmhaga can you tell me what your idle pressure when hot around 80degree mark was, your idle pressure when cold, and max pressure when warm when driving thanks

as i have low oil pressure on mine and just trying to work out if its the oil pump or its f*cked been like it for over 2 years tho

hmhaga

Idle pressure at cold startup is 90 psi. I can't remember the values at 80 degc, as I read the "hot" pressures at 90-100 degc (which is the normal operating temperature for my engine): Idle pressure 30 psi, driving pressure 80 psi, max pressure 85 psi.

swifty.....!

iTrader: (4)

thanks that sounds same as mine think i'l take pump off and have a look hopefully i'l see same as in your pic and if it is great excuse to upgrade it

StickyMicky

personally i would have fitted a new oil pump at the time anyway

hmhaga

I was amused to see the simple design, so I decided that compared to the engine itself it had "eternal" life (a 2.5 conversion is planned)

merlin24

iTrader: (1)

Thats quite common for the back plate screws to come loose and the result is a drop in oil pressure and sometimes engine failure shortly after.
Glad you caught it in time.

Mick

mit

iTrader: (10)

Mine was the same when i removed it last week,i replaced mine with an Api modded one,and it looks like the screws on this one are lock tighted.