Gen 3 H6 engines often misfire on cylinder #6 due to a cold solder joint under IC608 (CS900724). There are many suggested methods of repair (heating in the oven, soldering wire, blowing hot air) but none of them last for more than 2 weeks. This method guarantees that the misfire will not return.
Feel free to shoot me an email if you have questions or need a repair. [email protected]