Mutt motorbikes leak petrol

[dales1433]

I brought a brand new mutt and they leak fuel if you fill it up. I mean literally pour fuel all over the engine, over the air cylinder.. Very dangerous, terribly made, and mutt refuse to fix the issue.

Anyone else had the same problem?

[P.]

[stinkwheel]

Where is the leak from? When does it happen?

The phrase "fill it up" suggests this is an issue you encountered after brimming the tank?

It is quite common on many motorbikes that if you brim the tank with the bike upright then put it on the sidestand, you will get a significant amount of fuel overspill. This is because the fuel level will now be higher than the filler neck due to the lean angle (imagine filling a glass to the brim then tipping it 20 degrees to one side, what would happen?). They can't make a petrol tank totally sealed, fumes have to vent out if the temperature increases and air has to get back in to replace the fuel that run out in use.

On most bikes, overfilled fuel pours out onto the ground through an overflow hose but if that hose had become detached, it would go all over the engine.

The reason I mention this is if someone routinely made motorcycles that just pour fuel everywhere, they wouldn't last long as a company.

So, I'd suggest there is either a problem with your specific motorcycle or a problem with the way you are using it. It is almost certainly something extremely simple such as overfilling or a detached/loose hose.

I'd be interested to hear what the dealer said about the problem.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[P.]

[dales1433]

They are not interested in helping or refunding

I've spoken to a few Mot garages that have said they would fail the bike based on the fault..

There is no way of knowing if you've filled the tank further than the bike allows.. You would only be able to fill the tank halfway each time to be certain. Who wants a bike you can only fill halfway??

The bikes look lovely but are cheaply made and badly designed

[stinkwheel]

On the other thread you're venting on you said this:

[linuxyeti]

[P.]

[dales1433]

If you move the red line down substantially.

Seems like these responses are suggesting it's reasonable to have a bike pour petrol over a hot engine.. I'm not sure how to even respond to this...

[P.]

[johnsmith222]

[tom_e]

[stinkwheel]

[The Shaggy D.A.]

[dales1433]

Mutt are saying it's not a fault and it's designed this way. Can't / won't offer any help. The company that sold the bike have checked it over and say there's no issues with the overflow pipe ect.

This isn't overfilling the engine or filling the tank to the brim. I left about an inch of space from petrol to top of the tank as instructed in the Manual. When I noticed this problem I had lost about a litre of petrol which leaked through the centre of the engine (so hard to locate the source) and over the air cylinder.

If I had known this before buying I wouldn't have purchased the bike.

[P.]

Where does the pipe go to.

It sounds like you are being a tool and putting too much in.

Mutt have designed it that way, its purely for some hipster image.

There can't be an issue, its overflowing, so it uses the overflow pipe.

Get a bike with a tank that is designed to be filled?

[dales1433]

Couldn't agree more. I will get a bike where you can fill the tank. Who would knowingly buy a bike you couldn't..?

[P.]

[Teflon-Mike]

You do know that it is possible to extinguish a lit cigarette in a jar of petrol dont you?

Actually did it as a demonstration for one of my lads on the patio when I mixed up some 2T for the strimmmer, and they were going on and on about thier 'mates' in Dukes of Hazard fire-ball fantacies....

As has been said, you buy hipster style chinky-bike, then complain that YOU spill petrol when you over-fill the tank.

That's a bit like moaning that a kitchen knife is dangerous cos you cut yourself chopping onions!

User-Error is NOT a manufacturing or design defect!!!!

When you buy a bike compromised for style over practicality, THIS is the sort of thing you have to expect to live with and accomodate... like any over chromes harleyesque cruiser, not having the acceleration of a plastic fantastic sports bike, or a table-top-landing suspended dirt bike with shy high CofG and knobly tyres having the precission handling in the twisties on tarmac!

Then, when you buy a budget option chinese made machine, with sticker price placed above practicality in the priorities... WHAT THE FRIGG do you expect!!

Its a motorbike Fer-Fugg-Sake, NOT an Audi! The auto 'off' on the petrol pump is NOT designed to work on what's basically a garden petrol can on the bike, and does not have a five inch filler pipe in which the vacuum can suck air to be sure that the tanks not flooding over the cap!

Go learn to fill a lawn-mower can, without spilling...

THEN.. when you have mastered that.. MAYBE you can try tackling a motorbike fill-up.

In the mean time; you have been told that this is NOT a major product recall scandal by folk, who between us have effing centuries of biking experience, and more than a few, as much experience of motorcycle mechanics, and a few of us, quite a lot of experience and qualification in the field of design and manufacture...

Your poublished outrage at the brand, and the dealer, your nafariouse and unqualified remarks about 'The Fault' are just that, and right here, right now... IF there is an argument in law, my money would go on the dealer and manufacturer in a lible suit against YOU.

IF you have REAL issue with the machine... get a QUALIFIED engineer to do a report on 'The Fault'... take that to trading standards... and persue the matter through the propper channels... NOT here, where your ire and slander has been called out for what it seems to be... just that, ire and slander.
____________________
My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'

[P.]

^ agreed, fucking amazingly

[Evil Hans]

[Ste]

[suburban myth]

Are you filling the tank as per manufacturer instructions, which is probably consisted of " the bike being in the centre or side stand" and "level ground".

Sounds like an overfilling issue, along with a potential defect in the release pipe also.

Side note: If you've come to bad mouth a manufacturer, or retailer, get your shit in order first. I've perused the internet for approximately one million weeks now, and this is by far and away the most knowledgeable forum I've ever used. You're buying learner 125's, Chinese to boot, and joined the forum today. I've automatically discredited your opinion on each of these bases.

[stinkwheel]

I do agree with the OP in that it shouldn't really be overflowing onto the engine itself. Probably a 30 second job to reach up under the tank and reconnect the overflow pipe.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Sister Sledge]

If it's difficult and dark to see where the fuel is leaking from just use a match.
No - try looking with a torch for something obvious - I would!
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CCM 404 DS