Petrol leak - Triumph Bobber Forum
 6Likes
Reply
 
LinkBack Thread Tools
post #1 of 13 (permalink) Old 04-20-2018, 01:28 AM Thread Starter
Junior Member
 
Join Date: Apr 2018
Location: Cheltenham
Posts: 11
Petrol leak

Hi all was quite hot in uk yesterday and found bobber leaking fuel out of filter at rear of bike called triumph they said normal and told me not to fill bike to top of tank dose not sound right to me bike was in direct sunlight for a while ,probably wonít be an issue as knowing uk weather that is probably summer over thanks Phil
catchoreno likes this.
Bobber2017 is offline  
post #2 of 13 (permalink) Old 04-20-2018, 02:03 AM
Super Moderator
 
eisen77's Avatar
 
Join Date: Feb 2017
Location: Palma de Mallorca
Posts: 3,289
It does sound normal and probably due to slight overfill mixed with heat from the sun (expansion, & all that....)
Iīd keep an eye on it, but it does sound common/normal if only leaking droplets.
Obviously if you find a pool of fuel - then i would go to the dealer.
Mike the Bike and catchoreno like this.
eisen77 is online now  
post #3 of 13 (permalink) Old 04-20-2018, 05:41 AM
Member
 
Rodders's Avatar
 
Join Date: Apr 2018
Posts: 36
Garage
If you have just filled the bike to the brim and then left it in the sun, the heat will cause fuel to evaporate, building up pressure and thus pushing fuel out the expansion hose. Happens on both my Triumph and Kwak. I only fill to the brim if I know I will be riding the bike a far distance after filling. Don't sweat it.
MikeB and catchoreno like this.
Rodders is offline  
Sponsored Links
Advertisement
 
post #4 of 13 (permalink) Old 04-20-2018, 11:35 AM
Senior Member
 
Bob's_yer_firkin's Avatar
 
Join Date: Jul 2017
Location: Kent, England
Posts: 259
Agreed, if the fuel comes out of an underground tank its likely to be a lot cooler than ambient. If you fill to the brim it will expand a fair bit in the sun. That pressure has to be relieved somehow.
Bob's_yer_firkin is offline  
post #5 of 13 (permalink) Old 04-20-2018, 08:30 PM
Senior Member
 
Ribkick's Avatar
 
Join Date: Nov 2017
Location: Santa Cruz, California
Posts: 268
Quote:
Originally Posted by Bob's_yer_firkin View Post
Agreed, if the fuel comes out of an underground tank its likely to be a lot cooler than ambient. If you fill to the brim it will expand a fair bit in the sun. That pressure has to be relieved somehow.
The caps are vented. Leakage should be around bung. Don't understand leakage under bike.

2018 Bobber in Morello Red
Ribkick is offline  
post #6 of 13 (permalink) Old 04-20-2018, 09:43 PM
Member
 
Rodders's Avatar
 
Join Date: Apr 2018
Posts: 36
Garage
I haven't had a look on the Triumph but the Kwak has a vent has that drains under the bike even with a vented cap. I would assume the Trumpy would be the same. Someone with a manual or who has the tank off the bike should be able to confirm this. Realistically though if the tank only leaks when you fill it right up I think it's obviously an over flow.
Rodders is offline  
post #7 of 13 (permalink) Old 04-21-2018, 03:26 AM
Senior Member
 
Join Date: Sep 2017
Location: Swindon Wilts
Posts: 137
Bobber2017 this thread has some good info and should put your concern to bed 👍🏻
https://www.triumphbobberforum.com/#/topics/7762

Some days it just isn't worth chewing through the restraints !!!!
OneBobberMan is offline  
post #8 of 13 (permalink) Old 04-21-2018, 04:54 AM
Super Moderator
 
eisen77's Avatar
 
Join Date: Feb 2017
Location: Palma de Mallorca
Posts: 3,289
OBM - that link doesn’t seem to work. Takes me straight to the “popular discussions” page...
eisen77 is online now  
post #9 of 13 (permalink) Old 04-21-2018, 05:30 AM
Senior Member
 
Join Date: Sep 2017
Location: Swindon Wilts
Posts: 137
Quote:
Originally Posted by eisen77 View Post
OBM - that link doesn’t seem to work. Takes me straight to the “popular discussions” page...
Hmmm that’s odd eisen as when I click on it it takes me to the thread I wanted to post ??.
If it doesn’t work for others aswell I’m not sure apart from saying it’s a thread started by SXTony called (Filling the tank) around the end of Jan 2018 should hopefully be found by the search bar 👍🏻

Some days it just isn't worth chewing through the restraints !!!!
OneBobberMan is offline  
post #10 of 13 (permalink) Old 04-21-2018, 07:26 AM
Member
 
daggartuk's Avatar
 
Join Date: Aug 2017
Location: North Wales, UK
Posts: 86
Link works for me.
daggartuk is offline  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Low tire pressures? Zanetti Wheels And Tires 85 09-14-2019 06:03 AM
Oil leak from the belly pan weep hole? swsantoni Triumph Bobber Issues And Problems 3 05-13-2018 01:35 AM
Petrol Cap Bobber-Bomb Appearance Modifications 6 07-12-2017 02:14 PM

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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome