Carbon builds up on valves, piston crowns and chamber surfaces over time, and once it does you get hot spots, pinging under load and a general loss of crispness. This is the aerosol Mopar has long specified for decarbonising, typically sprayed into the throttle body bore with the engine running and the intake runner off. It is a chemical rather than a fitted part, so it works across the range.

Cleaner Specifications:

• 13 oz aerosol can, sold individually.
• Cleans carburetors, intake manifolds, valves, pistons and combustion chambers.
• Removes deposits and eliminates carbon knock.
• Suitable for any Jeep or Mopar vehicle.
• Classified as hazardous material, so ground shipping restrictions apply.