Hooked
px 125 disc
Joined: 28 May 2020
Posts: 127
Location: Essex, GB
 
Hooked
px 125 disc
Joined: 28 May 2020
Posts: 127
Location: Essex, GB
My fuel gauge was always reading on the low side( never more than showing 1/3 full).
Took the float unit out and discovered the float had fuel in it.
Decided to try and fix the issue so I drilled a small hole in one end and drained the excess fuel out, resealed the float carefully with a small soldering iron.
I was unable to find any obvious hole where the fuel might have got in so I ran the soldering over the seam on the float to reseal it, hoping that was the issue.
A month later the float is still working fine.

Addicted
Joined: 28 May 2020
Posts: 605
Location: Planet Earth
 
Addicted
Joined: 28 May 2020
Posts: 605
Location: Planet Earth
andyx wrote:
My fuel gauge was always reading on the low side( never more than showing 1/3 full).
Took the float unit out and discovered the float had fuel in it.
Decided to try and fix the issue so I drilled a small hole in one end and drained the excess fuel out, resealed the float carefully with a small soldering iron.
I was unable to find any obvious hole where the fuel might have got in so I ran the soldering over the seam on the float to reseal it, hoping that was the issue.
A month later the float is still working fine.
They get brittle and rot over time. When you take them out you almost feel it could shatter if you dropped it.

Hooked
PX150E
Joined: 28 Oct 2018
Posts: 205
Location: Florida, USA
 
Hooked
PX150E
Joined: 28 Oct 2018
Posts: 205
Location: Florida, USA
andyx wrote:
My fuel gauge was always reading on the low side( never more than showing 1/3 full).
Took the float unit out and discovered the float had fuel in it.
Decided to try and fix the issue so I drilled a small hole in one end and drained the excess fuel out, resealed the float carefully with a small soldering iron.
I was unable to find any obvious hole where the fuel might have got in so I ran the soldering over the seam on the float to reseal it, hoping that was the issue.
A month later the float is still working fine.
That is exactly how I have repaired them in the past. A tiny hole usually develops right at the seam, and if you squeeze the float in the middle with your fingers, you can see fuel squirt out of the hole. I have tried to substitute the float with a similar size plastic Aspirin bottle; it works, but the fuel eats and melts the plastic in short order. Another option is a champagne bottle cork, but again, fuel gets absorbed in it, and it crumbles to bits.

Hooked
px 125 disc
Joined: 28 May 2020
Posts: 127
Location: Essex, GB
 
Hooked
px 125 disc
Joined: 28 May 2020
Posts: 127
Location: Essex, GB
And it seems you can't buy the floats on their own, it's the whole unit or nothing

Hooked
PX150E
Joined: 28 Oct 2018
Posts: 205
Location: Florida, USA
 
Hooked
PX150E
Joined: 28 Oct 2018
Posts: 205
Location: Florida, USA
andyx wrote:
And it seems you can't buy the floats on their own, it's the whole unit or nothing
The fuel sending unit originally installed on PX is available below but not that cheap:

https://www.scootermercato.com/Scooter-Parts/Gas-Tanks-and-Parts/228090

However, I have obtained an old one from an old '80s Fiat that I used to have. the actual float is nearly the same and can be fitted to the scooter sending unit. In fact, that is what I have had on mine for the last 20 years, and, so far, it is still working.

Addicted
Joined: 28 May 2020
Posts: 605
Location: Planet Earth
 
Addicted
Joined: 28 May 2020
Posts: 605
Location: Planet Earth
You can buy them readily in the uk, beedspeed have them as do all the other good uk sites. They are about 70 quid . As like all parts , nothing cheap anymore . Paid 10 quid for a genuine delorto pilot jet, used to be a couple of pounds. Sign of the times. I don't dick about with cheap parts or cobbled together bits, just buy genuine NOS if not available .
   

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