Re: Combustion chamber cleaner
I am not sure how you would used a combustion chamber cleaner other than running in through the intake or through the fuel system. I have used BG44K and Seafoam on my vehicles - both through the fuel system and a bit through the intake through a vacuum hose. Both will break down carbon build-up in the engine. I used Seafoam in the gas in a 1966 John Deere 110 tractor with an 8 HP Kohler motor. It cleaned up the carbon so well that it caused the old head gasket to leak. These are a "do at your own risk" procedures.
2004 Columbia Edition WJ 4.7 HO
RB4/Moog HD Steering Stabilizer/PML trans pan 10304/OME 10MM Spacers/Bilstein shocks/Rubicon Moabs/255/65r17 Cooper Discoverer AT3/Factory chrome tow hooks/Mopar hitch & a loose nut behind the wheel