hi everyone
further to my post earlier "92 960 suddenly running rough"
thanks for the replies

my 92 with 166 klm has lost on cylinder and may have valves burned on more so im pulling the head of
2.9 inline
i dont have a manual yet so i need tips from you all
like what to look for hidden bolts special bolts
order of operations etc
i feel this motor is worthy of repair
so with the head off ill see how bad the bottom end is
it ran so smooth prior to this happening inside off 120 kilometers span that the rings should be fine
compression test determined the valves were bad
test was as follows wot 5 strokes per cyl dry then wet 2 table spoons of 10w40

1 142/190
2 0/0
3 183/255
4 165/185
5 135/250
6 160/214
tell me what your interpretation is possibly an overheated engine at one time ?
it ran very smooth prior to this happening
motor was running 20 minutes prior to testing

i swapped coils no change
also i feel i should service this oil pump and tube to make sure
where is the best place to get oil pressure from again i have no manual and im new to this motor

thankyou for your time in this matter

im a tool and die maker and avid engine builder so im not worried about this job just volvos little hidden tricks for this motor!

thanks again
gerry