I have a 93' 350 with 186k miles. I have a problem keeping it running. I'm in Louisiana where it isn't really that cold. When I first crank it up, it will run good for about a minute and then it sounds like it starts to bog down like it's starving for fuel. Then it just dies. I could try cranking it till the battery dies and it will not start up. If I break all the injectors, bleed them, tighten em' back up. It will crank, fire over slowly on a few cylinders, blow white smoke, and eventually, as it gets hot, run good and stay running. The smoke goes away. Drive it all day with no problem restarting it. I then let it sit over night and it will do the same exact thing the next morning. Now if I plug in the block heater overnight, it won't do it. It will run good and won't kill. And really, it isn't cold enough here for temperature to be the problem. Plus it will drip every now and then from under the injection pump. I've already changed the filter and used additive. Does anyone know what this can be??? Any help would be great, thanks.