can anyone help
when i start the engine from cold after a good run it makes the knocking noise for about 2-5 seconds (as if somthing needs oil)
if i switch it off straight after the knocking stops when i go to start it next time (however long i leave it) theres NO knocking
but if i run it up to tempreature switch it off leave it for 1-2 hours then start it again the knocking back

qusetion can hydrolic lifters 12 x inlet be pressed down by hand

9 of them i can 3 of them i can't

any ideas please