Oil Pressure

Hi All,
Had oil & filter change recently and I've noticed that sometimes the pressure rises up to max. When this happens I declutch to tickover and the pressure returns to normal. Could it be the filter or is this OK?
Appreciate any thoughts, ta.
DJH (16valve 1.8)

what oil was put in? it seems like too high viscosity oil...

pressure rises to max, do you mean 8 bar?

Yeah to 8 Bar and the oil is Selenia 10/40 and it says 20K on the can.
Incidently it doesnt seem to use oil - I change it every 6000Miles

8 bar is above the maximum pressure the oil pump can deliver, it's got a pressure relief valve. the maximum will be no more than 6 bar, more likely 5 bar, so it's either gauge or sender inaccuracy...

Aye! The sender is a little egg-cup shaped thing (on the v6 at least) with a single wire sticking out of it. If you take the spade off, clean up the prong and re-fit it, see what happens.

Ralf S.

I have had a stuck relief valve on a Lancia Fulvia before. That gave me full scale pressure and thats pretty scary on a Fulvia as the block to crankcase gaskets are a bit weak and its a major rebuild to fix!
Poor sender connection would give you a low reading, maybe you introduced some grit into the oilways when you did the oil change? Thats what happened to me.

this happened to a guy over on the .org he ended up having a full bottom end rebuild

although his would go upto 8, then drop to 0 and then normal in quite quick succession, just keep an eye on it. I take it the oil filter is O.E?

Thanks everyone. I'll keep my eye on it, incidently it's a proper Alfa filter.