oil probs in vp commodre

[craigwalker46]

hi
woundering if any one can help me i have no oil getting to top of motor. Car has been sitting for a while. it will only start on lpg and when it runs is making a terrible sound from oil pump. took front of pump of and spring does not move when turning over motor any help would be great
thanks craig

[Denso]

is it a v6 or v8?