Products Shop

Fuel System Cleaner – 3-STEP KIT


Carbon, Lacquer and Sludge deposits, continually form on fuel system components – ultimately hindering the engines performance by restricting the efficient flow of fuel and air through the engine to the combustion chamber. These deposits cause hard starts, rough idling, hesitation, surging, reduced fuel economy and increased emissions – robbing the engine of it’s maximum performance potential.


A Gumout® Professional 2-Step Fuel System Cleaning Service

  • Step-1: A powerful, highly concentrated fuel system cleaner added to the gas tank.
  • Step-2: A liquid intake cleaner introduced into the intake through the a positive vacuum source on the engine. We recommend using the #G991 fuel system cleaning tool for this step.
  • Step-3: A concentrated air intake cleaner sprayed on and in the air intake, throttle plate and bore and idle by-pass valve – safe for all OEM protective coatings.


  • This product can expose you to chemicals including Naphthalene, which is known to the State of California to cause cancer, and Toluene, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to

Product Benefits

  • Aggressively cleans sludge, carbon and varnish deposits from critical engine fuel system components: fuel injectors, intake manifold and ports, intake valves and combustion chamber. Cleans GDI systems too!
  • Utilizes Polyetheramine (P.E.A.) the most potent cleaning agent available in the market
  • Helps improve engine performance and restore lost horsepower
  • Restores fuel economy
  • Helps prevent future deposit buildup for up to 3000 miles
  • Removes water from gasoline and fights damaging effects of ethanol
  • Can be performed in less than 20 minutes


Additional Information

Part #:



4 kits per case


Gumout Professional Fuel Sysem Cleaner (Step 1) GO4998 Pro Liquid Intake-STEP 2 8oz-NEW 4997-Gumout Professional Air Intake Cleaner (Step 3)

SKU: 5205 Categories: ,