Tips for hissing fuel cap

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AlexD333

Well-known member
Joined
Jan 1, 2014
Messages
7,847
So even with lots of fuel sometimes after a drive if I open it up I get a big hiss... There is a breather in the cap by the looks of it, I tried to spray it with brake cleaner, isn't there a secret hose somewhere I can spray? :nenau
 
You don't fill up enough then:lol:lol Mine gives off a hiss every so often but it's mainly in the summer when it's hot but never noticed any problems TBH & i'm sure a couple of my old motors would did it as well:confused:
 
I have a full tank ATM,

Last time it did it I was on about 35 litres :nenau
 
I have a full tank ATM,

Last time it did it I was on about 35 litres :nenau

Well this is fairly normal, there is a valve in a plastic cannister that looks like the old 35mm film canisters, it is attached to the fuel tank, and you will see a small 6mm diameter pipe on it.

If at any point you have starting problems or running problems, then removing the fuel cap for a second might help things.

What is clear... your fuel system must be fairly air tight, as any leak would equalise the pressure in the tank. :thumb2
 
Could even be the dreaded tank snake, their buggers to shift but I haven't heard of anyone being bitten by one....yet :augie:augie
 
Could even be the dreaded tank snake, their buggers to shift but I haven't heard of anyone being bitten by one....yet :augie:augie

Oh gawd, I don't like snakes :eek:

I will keep my baton with me at all times then :p
 
I have a full tank ATM,

Last time it did it I was on about 35 litres :nenau

Full tank......you rich bar steward:lol cant remember when mine last had as much as half a tank:lol:lol:lol
 
Mine does that too.. I thought it was the fuel laughing at me sayin "how far do you think the next lot will get you:lol"
 
Full tank......you rich bar steward:lol cant remember when mine last had as much as half a tank:lol:lol:lol

It's a full tank on a budget, 50/50 mix :augie

I use the bike to commute to work mainly so the fuel build up in Terrano for the UFO hunting spots :cool:
 

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Clearly you guys are much younger than me...:augie
You got one free with so many gallons of Esso petrol.
Then there were the stick on bullet holes too.:doh
The Esso kite in the Mid 60's was the best ever I had.:thumb2
 
Clearly you guys are much younger than me...:augie
You got one free with so many gallons of Esso petrol.
Then there were the stick on bullet holes too.:doh
The Esso kite in the Mid 60's was the best ever I had.:thumb2

Oh yeah, almost babies uncky Rustic :lol:lol
 

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