Hello Guest User,

Please feel free to have a look around the forum but be aware that as an unregistered guest you can't see all of it and you can't post.

To access these 'Registered Users Only' areas simply register and login.

Fuel cap issues (leaking)

Need help restoring, building, or finding then try here.

Moderators: paul doran, Taffus, KeithZ1R, chrisu

Message
Author
Viktor Larsson
100Club
100Club
Posts: 166
Joined: 11th Jun 2011
Location: Piteå, Sweden

Fuel cap issues (leaking)

#1 PostAuthor: Viktor Larsson » Thu Aug 10, 2017 9:45 am

Hey guys, long time no see.

The Mk.II project is on the road and it's a really pleasant ride with the new suspension, wheels, brakes and all that. But I still have an issue with the bike and it's bothering me. A lot.

So when I was rebuilding the bike I removed the stock fuel tap from the tank and welded on a new fitting for a Pingle fuel tap. Now I have the issue of fuel seeping out the fuel cap, presumably due to pressure building in the tank.

What's the remedy here? The tank is freshly painted with new decals so I'd hate to go at it with a drill and weld on a small tube and run a line for ventilation (would cost quite a bit...). Do I have any options besides doing that? Anything? :|
There's no replacement for displacement.

Julian_Boolean
100Club
100Club
Posts: 427
Joined: 20th Oct 2016
Location: Ipswich

Re: Fuel cap issues (leaking)

#2 PostAuthor: Julian_Boolean » Thu Aug 10, 2017 2:18 pm

Blocked vent hole in the existing cap?
A collection of parts pretending to be a Z1100R and a H****

Viktor Larsson
100Club
100Club
Posts: 166
Joined: 11th Jun 2011
Location: Piteå, Sweden

Re: Fuel cap issues (leaking)

#3 PostAuthor: Viktor Larsson » Thu Aug 10, 2017 5:43 pm

Julian_Boolean wrote:Blocked vent hole in the existing cap?


There is a vent hole in the stock cap? :shock:

I think I need to take a closer look at that. Might be where the issue is if that's the case.
There's no replacement for displacement.

User avatar
z1bman
Hardcore
Hardcore
Posts: 4419
Joined: 3rd Mar 2010
Location: WORDSLEY WEST MIDLANDS

Re: Fuel cap issues (leaking)

#4 PostAuthor: z1bman » Thu Aug 10, 2017 6:42 pm

i presume you have checked the two small o rings that seals the tank cap screws ?

Viktor Larsson
100Club
100Club
Posts: 166
Joined: 11th Jun 2011
Location: Piteå, Sweden

Re: Fuel cap issues (leaking)

#5 PostAuthor: Viktor Larsson » Thu Aug 10, 2017 6:58 pm

z1bman wrote:i presume you have checked the two small o rings that seals the tank cap screws ?


Might have to take a second look at this too.
There's no replacement for displacement.

Viktor Larsson
100Club
100Club
Posts: 166
Joined: 11th Jun 2011
Location: Piteå, Sweden

Re: Fuel cap issues (leaking)

#6 PostAuthor: Viktor Larsson » Fri Aug 11, 2017 9:24 pm

Took the fuel cap apart and the breather seems to be fine. I just think it's really small but I guess it is enough since it has worked before. Cleaned out a bit of dirt from it. Also put some sealant in the threads for the screws. Hopefully it should be better now.

I'll report back tomorrow.
There's no replacement for displacement.

Viktor Larsson
100Club
100Club
Posts: 166
Joined: 11th Jun 2011
Location: Piteå, Sweden

Re: Fuel cap issues (leaking)

#7 PostAuthor: Viktor Larsson » Sun Aug 13, 2017 12:17 am

Took the bike out for a bit of a longer ride today after fiddling with the fuel cap yesterday. When taking it apart, it seems like one of the grooved rings that makes up the ventilation was fitted upside down and as such did not provide any ventilation whatsoever.

Thread sealant in the threads for the screws and the leaks are no more. Really happy to have sorted that out... thanks for the suggestions guys. :wink:
There's no replacement for displacement.


Return to “Bike Help”

Who is online

Users browsing this forum: No registered users and 5 guests