Ugly brown spot

[boppa]

Hope someone can help. Recently a brown stain has appeared at the tube going to the #6 clyinder at its base where the acorn nuts are. Any advice as to what it might be and how to stop it?
                                     Tia,
                                            Boppa

[eric in md]

sure can change your orings in there easy to do .. intake orings .. you need 6 of them

[1FAST6]

$12.50 for the set from here.  Great people to deal with.  I got my quick-disconnect from them.  These are much cheaper than Honda parts and higher quality material.

http://home.everestkc.net/richyrich/index.html

[Baloo]

Yep, mine is doing exactly the same. Did not have a chance to replace the o rings yet. Thanks for the link, 1fast6, it will come in handy! 

[98valk]

its gasket tack used to hold the o-ring in the manifold during assembly, that is melting from engine heat. check the tightness of the acorn nuts 6.5 ftlbs., or 1/4 to 1/2 turn more than they are now.
use very short wrench, less chance to over tight

[Patrick]

It certainly sounds like dried fuel, and since you stated it was around cylinder #6, I'd take a look at the vacuum line and petcock..