i have a question about the tank venting. and let me apologize in advance for what's probably blaintly obvious to everyone but me, but... i know that the fuel cap is vented via a hose - i'm thinking it's 1/8th' dia, that runs down the left side of the engine. but i'm a bit confused as to the venting cap- is it able to release air when the fuel tanks contents expand because of temp rise, or is it just for drawing air in? or both?
tank venting
- Thread starter the_gr8t_waldo
- Start date
The venting is in both directions. I have a power point illustration of it, but can't work out how to insert it.
STranger
Jay Knight
Take a screen shot and turn it in to a jpg
Good morning all
Yesterday I I opened the gas cap on my 93 1100 for the first time in many months. It was a cold New England day and there was a fair amount of pressure that burped out. Should the vent line flow freely in and out? Dose it run to the bottom of the bike with the T fitting mentioned earlier in the thread?
Yesterday I I opened the gas cap on my 93 1100 for the first time in many months. It was a cold New England day and there was a fair amount of pressure that burped out. Should the vent line flow freely in and out? Dose it run to the bottom of the bike with the T fitting mentioned earlier in the thread?
Uncle Phil
Site Supporter
I wouldn't be concerned about it at all.
I've had pressure build up in all four of my ST1100 tanks from time to time.
I've had pressure build up in all four of my ST1100 tanks from time to time.
Pressure will build, but a vacuum will allow air to enter. It is designed to keep fuel vapors in.