Go Back   DIY Go Kart Forum > Building Plans And Advice > Go Kart Discussion

Notices

Closed Thread
 
Thread Tools Display Modes
  #1  
Old 08-06-2019, 11:20 AM
vybrano vybrano is online now
Member
 
Join Date: Mar 2019
Posts: 73
Thanks: 27
Thanked 8 Times in 7 Posts
Default How does vented gas cap works; should it smell?

Working today around my ride I noticed, that if you put your nose 7inch/15cm from my gas cap, you can strongly smell fuel.

There's also some mechanism in the cap - probably ball that prevents leaks in upside down position? Or is it something more to it? Could it be bad cap that is evaporating my fuel. Or is it completely normal? I understand that it has to vent tank, but still, should I start looking into it or is it normal?

I wouldn't ask - but it is second hand tank and there are signs, that somebody was inside that cap before me (stripped screw head; glue) - which got me thinking why and what was done and how good... .
Attached Thumbnails
Dirt Bike ATV Gas Caps.jpg  
  #2  
Old 08-06-2019, 11:43 AM
mckutzy mckutzy is online now
Senior Member
 
Join Date: May 2008
Location: bc, canada
Posts: 7,508
Thanks: 841
Thanked 1,793 Times in 1,483 Posts
Default

Ya.. I typically smell fuel when im that close to the tank... you will smell it through the breather...

Some have a ball or membrane/diaphram to allow the air to escape.... But enough of a gap to not air lock the fuel line... or it wouldnt flow into the carb...
__________________
10yr+ club..... My current ride- http://www.diygokarts.com/vb/showthread.php?t=5461
The Following User Says Thank You to mckutzy For This Useful Post:
vybrano (08-06-2019)
  #3  
Old 08-06-2019, 09:40 PM
Karttekk Karttekk is offline
Senior Member
 
Join Date: Jul 2014
Location: Elizabeth, PA
Posts: 661
Thanks: 21
Thanked 161 Times in 135 Posts
Default

As much as a cap costs, why don't you pick up a new one to be sure? If yours was tampered with, who knows if it's working. The caps have to vent so as the fuel is being drawn into the carb air can be drawn in from the cap as a vacuum.
  #4  
Old 08-08-2019, 11:07 AM
JTSpeedDemon's Avatar
JTSpeedDemon JTSpeedDemon is online now
2019 Build Off Winner!
 
Join Date: Jan 2019
Location: Texas
Posts: 3,186
Thanks: 747
Thanked 473 Times in 430 Posts
Default

My kart's gas cap has a screw vent, and the kart usually emanates a gassy smell.
Got me banned from long term garage storage.
__________________
Currently Flathead-Crazed
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 08:19 PM.