Volvo d13 cups/injectors issue

[Mattman]

It has been an issue for those engines. Like was said if you only got 5 or 6 months before it is happening again I would lean towards bad install.

What is said to happen is that combustion gases makes its way past where the injector seats inside the injector bore. This allows the combustion gases to enter the fuel system. Last I heard they had a new tool design to use when installing injector seats.

There is bunches of Volvo and Mack engines with more than 700,000 miles running, so this issue has to be fixable.