E 350 Van V8-7.3L DSL Turbo VIN F (1995)
Glow Plug: Component Tests and General Diagnostics
1. Disconnect glow plug/injector harness connectors from the valve cover gasket.
Glow Plug Testing
2. With the pigtail installed, measure glow plug resistance to battery negative terminal.
3. A resistance measurement of 0.1 - 6 ohms indicates a good glow plug.