Review on Dorman 615-202 Intake Manifold Diesel Valve Cover Gasket Kit: Superior Quality and Performance by Aaron Bannister

I like this replacement design more than the OEM part. If your 7.3 liter engine smokes excessively when cold starting, the problem could be a bad wiring harness that is causing the glow plugs to not work. We disconnect all 4 pigtails and look for signs of melting wires at the connectors. 13mm socket for removing valve cover bolts. Use compressed air around the engine BEFORE removing the valve cover.