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  • Bob posted an update 9 years, 4 months ago

    MY 49 DT 201 shuts off at 180 degrees.. I’ve changed the fuel filter,the spark plugs the air filter and checked the electric fuel pump. All seems good ,any ideas ?

    • 1949 model 201 shuts off at 180 degrees. I have seen this same problem on a 1948 model 201 Diamond T Truck. the shut down problem “could” be” caused by ” vapor” lock in the FUEL LINE ; located close to the HEAT from the exhaust manifold. note: after the 1948 model 201 fuel lines had “cooled” off; the Diamond T Truck would start and run ok.

      • DO you still have the HERCULES 6 cylinder (?) , model QXLD3 (?) in your 1949 model 201 Diamond T truck. note: the fuel lines that run next / near the EXHAUST MANIFOLD “might” (?) need some ( heat, insulation material) to keep the “HEAT” away from the FUEL LINES and the ELECTRIC FUEL PUMP.