Just curious and not wanting to detract from Gary's post which is just a coincidence.
After the head was taken off my car and put back on a few weeks ago the oil pressure light was very active and car felt very revvy and responsive. After a time the oil pressure gauge doesn't move much if at all as the gunk builds up, where as before it was going down 2-3 bars when in neutral and sometimes when decelerating.
It moved a bit this morning after I thrashed the car a little but usually it just sits at maximum.
when engine is fully warmed, mine sits a 3 bars lit idling and then goes up to 5 bars lit revving. I must admit lately its been sticking at 5 maybe flicking 4/5 i hope thats the weather. An oil change has helped allot, it goes down to 3 at idle but quite slowly.
See mine will only show signs of life after a damn good thrashing. I'm not sure whether the 'leak' is responsible for the lack of movement now since when it was all put back together the other month it was up and down like nobody's business.
Something is evidently getting gunked up in double time though the car still feels lively. Perhaps now that one leak is cured things may improve slightly.
tim, your gauge should deffo drop to 3 bars or so when the cars nice and hot - the gauge sender is down on the back of the pump so nothing up top can possibly effect the signal it sends, short of a serious block - in which case something would of exited stage left, at a tangent, by now.
Perhaps the sender needs looking at but that doesn't really explain why after stripping the engine and putting it back together the gauge is full of life and then a month later it's stationary does it?
The car runs fine in every aspect and the gauge was flickering yesterday between 4 and 5 blocks.