DIY: How to Sea Foam an Engine

Difficulty Level

Tools/Supplies Needed:

• Sea Foam engine treatment
• pliers
• wrench
• screwdriver
• rubber hose

Procedure:

• ensure the engine is up to optimum operating temperature when doing this procedure
• now turn the engine off and locate an easily accessible vacuum line
• a vacuum line from the intake can be used such as what I've done in the video or the main brake booster vacuum line works as well
• you may need pliers, wrench, screwdriver, etc to assist in the removal of any clamps or the hose/vacuum line
• if the vacuum line is too short from the intake, then purchase the appropriate size vacuum line and connect it to the intake
• start the engine, you may notice it running rough due to the disconnected vacuum line which is normal
• insert the hose into the Sea Foam can and suck up half the fluid
• if you are working with the brake booster, pour the fluid into the vacuum line instead as it will be much larger
• the engine may stall or you will need to turn it off manually
• let the Sea Foam soak internally into the engine for about five to ten minutes
• any carbon built up inside the combustion chamber will be broken down
• dump the remainder of the Sea Foam into your fuel tank
• reconnect the disconnect vacuum line
• once the time period has ended, start the engine
• it may take a moment for smoking to appear from your tailpipe
• allow the engine to idle until all the smoking has disappeared

Video tutorial on how to apply Sea Foam in your petrol/gas/gasoline/4 stroke engine. Sea Foam is a type of fuel system, intake, and combustion chamber cleaner which removes any residue or debris build up internally from an engine that can cause running issues. These issues can consist of hard starts, poor fuel economy, lack of performance, rough idling, etc. Sea Foam is intended to clean any carbon build up, reduce sticky injectors, clean other engine components internally, etc. From my experience, the car does idle and run much better. Unfortunately I haven't experienced any noticeable change in fuel economy. Results will vary though, depending on your vehicle. This particular tutorial was done on a 2000 Subaru Outback 2.5L opposed 4 cylinder EG25.