Like said above. Make sure you prime the engine. You can rent or buy the tool from autozone,murrays.etc. Make sure the tools is on properly or you will be mistaken for getting no oil pressure. When you reinstall the distriburor,make sure it is also properly installed and KEEP your eye on the guage for oil pressure when you turn it over.Like said above,I almost ruined a engine also because I didnt have the distributor all the way down and I had no oil pressure.Good luck,keep us posted!