Use Sea Foam® Spray to clean carbon deposits from the intake systems, intake valves, and combustion chambers of your  engine. Not for use on Diesel Air Intake Systems.

Use Sea Foam® Spray to clean all these areas with the cleaning tube inserted into the sealed air intake system to spray Sea Foam® into the engine from in front of the throttle plate. See side panel for illustration.

Warm up engine and turn off all accessories.

Shut engine off.

• DO NOT use in enclosed area, make sure exhaust is well ventilated
• DO NOT use a scan tool to increase RPM via the air by-pass valve
• DO NOT spray Sea Foam® into the mass airflow Sensor

Locate the engine throttle body and remove air intake boot. Install the Sea Foam® cleaning tube by inserting the short end of the hook guide into the throttle body, positioning the tube directly in front of the throttle plate. Ideal placement of hook guide is at top center of throttle body housing (12 o’clock.) Place end of cleaning tube within ¼” of throttle plate by adjusting cleaning tube in or out of hook guide. Replace air intake boot to hold cleaning tube assembly in place.

With the vehicle in park or neutral and parking brake engaged start engine and increase idle speed 500 to 1000 RPM above factory idle specification. Increasing engine RPM is important for the following reasons:

• The Sea Foam® cleaner must be evenly distributed
• The Sea Foam® cleaner must fully atomize
• The Sea Foam® cleaner must pass through the throttle body, not the air by-pass

Find a method to hold engine RPM steady as this application takes approximately 5 minutes

After ½ can of Sea Foam® has been used, approximately 2-3 minutes, stop spray, return engine to normal idle speed and shut off engine.

Remove cleaning tube from throttle body and reattach air inlet boot to throttle body and tighten clamp.

Let vehicle sit about 5 minutes then restart in a well ventilated area, as exhaust may be extreme for a short time. Road test, driving aggressively, to remove any remaining carbon.  REPEAT Sea Foam® TREATEMENT AS NECESSARY.

*NOTE – THIS OPERATION ONLY PERTAINS TO 1993 – 2000 4.3 LITER, 5.0 LITER and 5.7 LITER VORTEC ENGINES*

With the engine warm and turned off. Remove the air intake boot and open the throttle plate. Attach Sea Foam® Spray’s 30” induction cleaning tube to the Sea Foam® Spray can and feed the tube into the air intake until it reaches the plenum. The 30” induction cleaning tube has a 360 degree spray pattern so the Sea Foam® Spray will distribute to all cylinders evenly. Spray for thirty seconds while slowly removing the 30” induction cleaning tube. Reconnect the air intake boot and allow at least 10 minutes for Sea Foam® Spray to re-liquefy fuel varnish deposits that hold carbon together. Start the engine in a well ventilated area as exhaust will be extreme for a short period of time. Drive the vehicle aggressively for approximately four miles or until the heavy exhaust clears. Repeat this treatment process as necessary.

Sea Foam® has introduced a convenient new long-reach straw for performing an engine treatment in special situations like Vortec engines and Subaru’s H style engines, where there is no single vacuum line for all cylinders. These situations require spraying of Sea Foam® Spray directly into the throttle body. The long-reach straw is uniquely designed to spray 360 degrees through 4 holes in the side of the straw, to help in evenly distributing the spray to all cylinders and throughout the inside of throttle bodies.

Begin by removing the air intake boot from the throttle body

With the throttle body now exposed, it will be easy to see the built-up varnish and fuel residue on the butterfly valve.

Feed the 30” straw into the throat of the throttle body until it reaches the plenum.

Start the engine, ensuring you have very good ventilation. A large amount of white exhaust smoke will be generated for a few minutes. Drive the car aggressively for about 5 minutes to aid in expelling the varnish and gum deposits liquefied by Sea Foam® Spray.

With the engine warm and running, spray Sea Foam® Spray directly into the carburetor throat. Spray until the engine begins to draw down, then stop spraying and allow the engine to return to regular speed. Repeat this spray pattern 3-4 times. Finally spray Sea Foam® Spray until the engine draws down and stops. Now let the engine sit and soak for at least 10 minutes to allow Sea Foam® Spray to re-liquefy old fuel residue deposits that hold carbon together. Restart the engine in a well ventilated area as exhaust will be extreme for a short period of time. Sea Foam® is safe to use in all engines because it will not damage neoprene, plastic, rubber or even cork gaskets.

Use Sea Foam® Spray to quickly and easily clean carburetor throats, fuel jets, choke mechanisms and intake valves.

On small 2 or 4 cycle engines, spray Sea Foam® Spray directly into the carburetor as the engine is running, until you hear the engine start to bog down. Stop spraying, and let the engine return to normal speed. Repeat this process 3 or 4 times.  Then finish by spraying Sea Foam® Spray into the carburetor until the engine actually stops. Then let it sit for 10 minutes.

Restart the engine, and let it run for a few minutes, revving it occasionally.