decarbing the engine

[SeaMasterZ@aol.com]

My grandfather used to decarb the car by pouring water into the carb until the motor started to conk out then rev it ... after pouring a pint or so thru the motor he would button it up and go for a "clean out the motor ride", and crank that big ol 74 Caddy 500 way past 100 MPH ... (he was my favorite grandfather, a ten dollar bill and a wink to "not tell grandmom about goin fast")<br /><br />Hes gone 20 years now, I miss him, but I wish he was around to get advice on the outboard .. is the water trick a good way to go? mist some water in with a spray bottle? or just rip it down and scrape it clean? (I really should rip it apart anyway)<br />where is a good site for getting parts for a 64 Evinrude ten horse? I need a water pump impeller, head and head gasket (to fix it right) do I need to use evinrude headbolts or would an aircraft stainless steel part do?(one of them is broken off, and I havent tried the rest yet)<br /><br />also, is never sieze a good idea for stainless bolts into aluminum? I think there is lead in there, could that set up some sort of tertiary electrolysis?

 

[roscoe]

Re: decarbing the engine

There are a few guys that do the water thing, but even they say it is very touchy and you have to be careful. ? ? <br /><br />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 REMOVE the existing carbon buildup from the cylinders, heads, and rings, then a spray decarb solvent product is needed. Buy at least 2 cans of decarb. Some people use one can per cylinder.<br /><br />Run engine at fast idle, with engine running, slowly spray liberal amount into each carb,<br />spray some more, spray a larger amount into carbs until engine chokes out and stops,<br />remove spark plugs and spray decarb liberally into each cylinder, install the spark plugs, let it soak for 1 to 10 hours. <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 />For parts try these.<br /><br /> http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=17;t=026609;p=2 <br /><br /> http://www.tenkillermarine.com/boatparts/index.asp <br /><br /> http://www.outboardparts.com/pindex.html <br /><br /> http://www.twincityoutboard.com/

 

[SeaMasterZ@aol.com]

Re: decarbing the engine

Thanks for all the info Roscoe, Ive been so busy with reading about all the projects going and trying to sort out mine that I forgot about the carbon post ... I will definitely check out that stuff when I get the motors running ... the cool thing is, I have access to people that have actually DONE all this stuff to their motors, they know, and its not like a Clymer manual that says, to replace engine, first remove engine ... yanno, DUH! how bout a little more info! Everyone tries their best to explain things so its clear.<br /><br />Great stuff!<br /><br />thanks!