thanks all for the replys...
sorry for not updating thread i have been away for over 4 weeks with work!!!
i pin pointed the rattle to my waterpump as its got alot worse so gonna change it tomorrow if weathers ok...
as for my lower intake manifold... my exhaust is blowing and it sounds like its coming from the lower manifold....
plus i ve got a oil leak from the oil filter housing.. i ve got the new rectangle gasket but do i need to drain all the oil out or will it be ok to remove the housing as all the oil will sit in the sump?
cheers all
Remember to bleed the cooling system correctly after fitting the water pump :thumbsup
How to bleed the cooling system.
1.Jack the front of the vehicle up onto stands as high as possible,
2.Turn the ignition on,engine off,heater on fan setting 1 and temperature fully hot,
3.Remove the rad cap/expansion cap,remove the bleed screw from the rad and IF you have them the bleed screw(s) from the thermostat housing/top hose, return pipe or EGR thermostat.
4.Fill the radiator up and keep pouring till there are no more air bubbles coming out from the bleeds, when good then install bleeds and tighten down(don't snap them),ensure the rubber O-rings/seals are still on the screws/on the bleed holes.
5.Suck some water out so it's not full to the brim, replace the cap and then start the car. Run her up and check for heat from the vents when warm and check if over heating still persists.
6.If good then check the water level again in the morning when cool.
As for oil filter housing, you won't need to drain the oil from the sump but you will need to remove the oil filter top unless you want oil everywhere
You should also obtain #4/#5 here
http://www.realoem.com/bmw/showparts.do?model=BL32&mospid=47610&btnr=11_1568&hg=11&fg=30 to help with the oil leak.
