just picked up my 93 lx 4d. i knew it had this problem before i bought it but for 1500 i wasn't to worried just want to fix it. anyways if i get on it hard it'll start to smoke pretty bad. not sure if it smokes just a lil when im driveing normal or not but if i do a compression test and it's good all the way then its the valve stem seals right? anyone know where to get that tool that blows air in the cylinder so you don't drop a valve when replaceing them. and how hard is it to remove and replace the cam....i know i need to get a helms manual.