Decarb

pasprintfan

Cadet
Joined
Sep 23, 2003
Messages
6
Should I decarb the engnine before fogging it to winterize it? Or should I just do it in the spring when I get it back out?
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Decarb

Moving to General Outboard
 

rickdb1boat

Supreme Mariner
Joined
Jan 23, 2002
Messages
11,195
Re: Decarb

Ditto with Roscoe. I do it as part of winterizing. Gets the carbon out so it doesn't sit there all winter and make the rings stick in the spring.
 

alcfer

Seaman Apprentice
Joined
Aug 17, 2003
Messages
42
Re: Decarb

Sorry<br /><br />Can somebody explain me that it means to decarb the engine?<br /><br />Thanks
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,754
Re: Decarb

Decarbing is a 2 part process. The first part is preventative, done by using a fuel additive to prevent carbon build up. SeaFoam or Ring Free are such fuel additives and can be found at most auto parts stores. It also works as a fuel system cleaner and should be used as a preventative maintenance procedure.<br /><br />If Your intent is to REMOVE the existing carbon buildup from the cylinders, heads, and rings, a spray decarb solvent product, such as SeaFoam Deep Creep, is needed to do the decarb process. Some people use one can per cylinder. Free moving rings are what seals your cylinders and gives you compression. Compressed and stuck rings equals loss of compression, and eventually, engine failure.<br /><br />Run engine at fast idle, with engine running, slowly spray liberal amount into each carb, its gonna smoke up the place,<br />spray for a couple minutes, now spray a larger amount into carbs until engine chokes out and stops.<br /><br />Remove spark plugs and spray decarb liberally into each cylinder, install the spark plugs, let it soak for an hour. <br /><br />Start the engine and run at medium throttle, or if at the lake, run it at full throttle. It won't hurt to spray some more through the carbs. Run it for atleast 10 minutes to flush the crud out of your engine. Now remove and clean, or replace the spark plugs. <br /><br />It works well to do the spraying, the night before you go to the lake. This way you can let it soak overnight, and really flush it out at the lake.<br /><br />Don't do this in front of the garage door or the house, unless you want it coated with greasy crud.
 
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