should I decarb?

[gator79]

I have twin 1989 130 hp Yamahas. I recently bought this boat and do not know how many hours are on the motors. they seem to run fine, i just thought they would benefit from de carbing. I bought the deep creep and was ready to do it but my local dealer advised me not to do it on that old of a motor, he said the carbon may be helping the rings seal. I have been an auto tech for 27 years and I know it helps 4 stroke engines regardles of miles. what should I do?

 

[JB]

Re: should I decarb?

Howdy, Gator.<br /><br />Correctly done, a decarb does not always help, but I don't think it can do any harm.<br /><br />If deposits were "helping seal" the rings, the rings are stuck and need replacement. Just like a 4 stroke.<br /><br />Good luck.

 

[rodbolt]

Re: should I decarb?

hello<br /> yep I gotta go with JB on this.<br /> if you have that much carbon in a two stroke ring it will bite the dust anyway.<br /> should not hurt<br />good luck and keep posting

 

[gator79]

Re: should I decarb?

did it today, you would not believe the black crud that came out. hope to take it out tomorrow to see if it made a difference.

 

[jafa]

Re: should I decarb?

Did it , dont ya hate when there's no answer !!!

 

[johndoe]

Re: should I decarb?

What exactly is "decarbing" ???

 

[DuPont Spinner]

Re: should I decarb?

Johndoe: Decarbing refers to removing the carbon build-up on the pistons, rings, and combustion chamber. Although many at this forum know more about the process than I do, from what I have been able to gather, it can be done by aerosol sprays through the carburator or by an additive to the gasoline. If you do a search at this web-site, you will find tons of reader information and opinions. DuPont