hot start bad? Maybe not the CPS but the fuel tank check valve
http://www.bimmernut.com/forum/showt...ht=check+valve

@Jehu,
see my website below, under other diy links there are the sites of wuffer, Timm and Mwrench, they have all you need for checking an E31. Wuffer even has a prepurchase check list
and
http://www.8er.org/
http://forums.bimmerforums.com/forum...splay.php?f=55