I have a 1994 f-350 powerstroke turbo diesel 7.3. It was running fine the just quit one day. It hasn't been run in years. It will run only while your squirting starting fluid in the intake. I have checked all the fuses and relays and everything seems to be ok. You can hear the tank switch valve working when you switch tanks but I haven't hear either fuel pump at all. I think it may be the inertia switch which can be set off by a speed bump but I can't find it. Its just supposed to be a little plastic box piece with a red button on it inside the cab of the truck under the dash. I have looked all over and it is definately not where the book said it would be. If you know where it is or maybe what my problem might really be just let me know. Thanks. Swampbilly.....