my cossy oil pressure at idle is about 29psi cold and drops down to about 22psi when warm, im told thats 2 low, is it worth taking crank out inspecting and replacing shells?

 

that is a bit low, shouldnt be below 26 warm, is your engine rattly or tappy?

 

no its not rattly at all cold or warm so suprised it drops soo much when it warms up unless its got crap oil or sumthin???

 

that does seam a bit on the low side fella, mine engine's rattles and knocks like fook but on cold start up i get bout 45-50psi n when warm on idle its around 30psi

 

mine was 50-55 cold and 30-35 warm on tick over

 

ok, myns def low then!! what you recommend new set of shells before i get any damage dont wanna have to grind the crank, or could it be shitty oil or wrong grade?

 

mine was oil pump pickup pipe blocked with silicon...

 

im gonna have to inspect it dont want it to start chapping, would be good if it was just dirt in the pickup pipe

 

I would try a different pressure gauge first, as you don't want to be doing a tear down just for a dicky pressure gauge!!
Personally, so long as it is ok whne above about 2000 rpm I would leave it alone, there is such little load at idle this pressure is no problem at all.
The ford figures assume that everyone will just buy a new engine from them, that pressure is perfectly adequate, some engines fall off the bottom of the scale on tickover, but pick up once spinning a bit faster.
Yes wrong oil, ie too thin will lose pressure as it's still thinner when hot, so will worn pump blocked strainer etc.
I would try an oil change first with at least 50 weight oil, ie 5W/50 or 10W/50 etc.
tabetha

 

thanks for that tabetha thats a relief i will give the oil a change this weekend since its due a change anyway, n borrow a gauge of a mate to check and go from there

 

I'm with Tabetha on this. It might have the wrong grade in it - you don't mention what oil is in it, I assume you don't know?? Did you buy the car recently or something?

 

yeah its not long mine, so got no idea whats in it, the last owner only did 600miles in it so cant see him knowing what oils in it either!

 

ah yes i forgot to say ford recommend 20w50 oil!! so you want to be running a heavier oil i run 15w50 mobil1 and its 70-75 cold 30-35 hot..... if its not rattling or tapping when warm i wouldnt worry too much!

 

i put insome fresh oil 10w 40 until i get some of the 50 stuff and thats put the oil pressure up a bit, seems to be fine but gonna keep an eye on it and listen out for any knocks