I was wrestling some major carbon buildup until recently, on my 1998 Tahoe, upon which a past owner bestowed free-flowing exhaust duals. I ended up replacing all plugs and wires, which helped for a while, but then carbon got plug #4. I replaced the K&N air filter with a standard one, and that...
Hi all and thank you for this great place to use and discuss stuff.
Car is 2015 Hyundai Sonata 2.0 turbo sport. Working on ways to stop the carbon buildup on GDI engines at the intake valves.
crust