What is this

pricez71

New Member

• May 1, 2017

• #1

Hey guys working on this 79 ct70 and I'm not sure what the heck this tube is. It's not on my 70 or 76 model. Please help.

 

Last edited by a moderator: Jul 17, 2017

ez50

Well-Known Member

• May 1, 2017

• #2

Looks like a batt event/ leaker

 

Gary

Well-Known Member

• May 1, 2017

• #3

Put me down for crankcase vent

 

Mike_

Active Member

• May 1, 2017

• #4

it has a cap on it??? that is strange, someone mod it and make a way to drain the gas tank?

 

pricez71

New Member

• May 1, 2017

• #5

It has a cap on it. The only lines coming out of the gas tank are the 2 for the carb. I guess it could be a vent of some kind not sure

 

Last edited by a moderator: Jul 17, 2017

pricez71

New Member

• May 1, 2017

• #6

Gary is correct I finally found it in my clymer book thanks Gary

 

Last edited by a moderator: Jul 17, 2017

kirrbby

Well-Known Member

• May 1, 2017

• #7

How bout #15 here. http://www.partzilla.com/parts/search/Honda/Motorcycle/1979/CT70+A/AIR+CLEANER/parts.html

 

red69

Well-Known Member

• May 1, 2017

• #8

Emissions crap. They're on my '94.

 

kirrbby

Well-Known Member

• May 1, 2017

• #9

I think that tube you pictured, with the cap, is supposed to be opened occasionally to drain any oil and water that has accumulated.
Emissions crap is right. Crankcase breather, to a vapor collector..?, to the airbox and drain.

 

L

lukelaw1

Active Member

• May 2, 2017

• #10

Was this poor attempt at a "warm air intake"

 

WipeoutWm

Member

• Jun 12, 2017

• #11

It was a fallout collector for a crank case ventilation system. Supposedly the system would allow condensation of oil and water vapors before passing "cleaner" air out. You need to occasionally open the cap and drain out the crud, and probably stick a pipe cleaner up there to clean out the tube. Newer Hondas use it too, sich as my wife's 2007 Metropolitan. (Can I say Metro on this board?)

(edit) oops just saw Kirrby gave the same answer, only shorter.