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Maxxforce 7 Turbocharger Failure – Common ProblemsWhile turbo failure on any vehicle is enevitable after many miles and years of service, the Maxxforce 7 has unique issues that cause turbo failure more often than other engines. The biggest culprits behind a failed turbo on a Maxxforce 7 engine are EGR related issues, and oil dilution. EGR Issues Soot re-entering the engine and coming through the turbine housing over time will begin to adhere to the vanes and cause the turbo actuator to fa …