I have a 1995 superduty with the 7.3 powerstroke. I'm having problems finding the problem withmy truck. It doesn't won't to start after setting overnight. When it does start it runs rough until it warms up. If I plug it in it will run just fine. I've already replaced all the glow plugs and the control relay. The problem seems to be on cylinders 7 and 8. When its running rough I'll unplug the connector to the injectors and it doesn't make a bit of difference. I've also replaced the cam sensor and the valve cover gasket. Someone told me I might have lazy injectors that don't want to work when there cold. Any help would be greatly appreciated.
Thanks. Matt