So I passed my cbt and went home to ride then.........

[Tnias]

Before I start I have a gz125 suzuki marauder.

Was riding about for a couple of hours fine, went to my friends, we noticed fuel was leaking from under the carb. There was no hose connected to it or anything, is there supposed to be? Cos one was sitting loose that was connected to the top of the carb. Bike won't start now but engine still turns over, any ideas anybody

[EazyDuz]

Post a pic
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To shreds you say? Tss tss tss

[Tnias]

Left bike at my mates for now he will take a pic when he's home from dropping me off and I'll stick it on bud

[Tnias]

so the hose i have attached underneath wasnt actually plugged into where it is now, was just sitting loose (only plugged into the top). So not sure how its meant to look ? fuel was leaking from where i plugged the hose into under the carb.

https://i.imgur.com/jQ4gTQe.jpg
https://i.imgur.com/ml2eHRh.jpg
https://i.imgur.com/0Mo3iKb.jpg

[Shaft]

If you mean the red pipe, it's currently plugged onto the carb overflow and is doing what it should be doing, venting excess fuel to a point where it drips on the ground, usually just under the swing arm pivot point.

The carb is overflowing because the needle valve is stuck, so the fuel doesn't stop flowing when the float bowl is full.

Try tapping the float bowl with a light hammer/screwdriver handle (you aren't trying to smash it to pieces, just unstick a little valve) and see if it stops.
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[Tnias]

ah OK, will try that tomorrow, so I should leave that pipe where i have it now and try what you said or unplug that pipe form underneath and put it loose where it was ? excuse the severe lack of knowledge just trying to learn as I go.

thanks for the reply

[gavcarter]

I have had MILD success doing the following:

Turn petrol tap off ( if has one)

Opening drain screw on carb, will be right above the red pipe

Push a tin of carb cleaner quite hard against the red pipe and back-fill the carb, so the float bowl is filled with cleaner, it will all drain back out when you take the can off the red pipe.

Wont work if you dont get enough inside the carb so try and keep the pipe higher than the bottom of the carb.

It is just a quick fix, and you may end up having to clean it out properly, but its always worth a little punt, it can save you about an hour if it works

[Shaft]

Leave it where it is, it's meant to stop you getting a big puddle of petrol on top of your gearbox.
____________________
Things get better with age; I'm close to being magnificent........
20 RE Interceptor, 83 Z1100A3, 83 GS650 Katana
WooHoo, I'm a Man Point Millionaire! https://www.bikechatforums.com/viewtopic.php?t=234035

[gavcarter]

[Tnias]

yeah that seems to make sense heh

thanks again will post back when me and my mate have a look again tomorrow

[Tnias]

[Shaft]

[gavcarter]

The other end has gone brown? I thought it was two separate pipes.

In that case double check there is a pipe connected to the fuel tap, and that you actually have some petrol left in the tank......

If there is no pipe on the fuel tap, then take the pipe off the BOTTOM of the carb and connect it to fuel tap, leave the middle bit where it is...

Apologies for earlier posts ( ignore them) , I thought we were looking at two separate pipes, not one that has been looped back round out of sight

[Tnias]

There is definitely a pipe from the fuel tank and definitely fuel in the tank, that's all connected fine. Yeah the brown end was always plugged in where it is but the other end was sitting loose under the seat somewhere. Then fuel started dripping out of where that end is now plugged into (underneath)

[Shaft]

Before you passed your CBT, had the bike been standing unused for a while?
____________________
Things get better with age; I'm close to being magnificent........
20 RE Interceptor, 83 Z1100A3, 83 GS650 Katana
WooHoo, I'm a Man Point Millionaire! https://www.bikechatforums.com/viewtopic.php?t=234035

[Tnias]

Yeah it had been left out in all weather, got quite rusted etc, but was running fine. Needed the front brake caliper replaced, done that and sorted out the rust. Bike ran fine when I got it, or so it seemed. I did get it cheap heh

[Tnias]

Forgot we discovered something else, not sure if it's related to the same leaking fuel thing. But when it didn't start we checked the spark plug and it was wet when we pulled it out, cleaned it up but still no joy.

[Shaft]

[Tnias]

Yeah I'm afraid living in Scotland makes riding in the rain a regular occurrance heh.

Thanks alot both of you for all the advice we will have a good look at it tomorrow (hopefully the weather will be better)

[Shaft]

Do a standard spark test; take the plug out, shove it back in the plug cap, then earth the thread against the cylinder fins (hold the plug lead, not the spark plug!)

Press the start button and if you get a nice fat blue spark across the plug electrodes, the ignition is all good and it's overfuelling.
____________________
Things get better with age; I'm close to being magnificent........
20 RE Interceptor, 83 Z1100A3, 83 GS650 Katana
WooHoo, I'm a Man Point Millionaire! https://www.bikechatforums.com/viewtopic.php?t=234035

[Tnias]

ok will try that too, whwn we took the plug out and held the elad last night there was no visible spark but fuel flew out of where it was plugged into, im guessing thats normal cos thats where it ignites ?

EDIT: sigh.. mate just checked on the bike as its parked at his and said its been leaking petrol all night from elsewhere now... christ knows what's happening. seems since its had a good ride its just falling apart. Leaking from air filter.

[Ariel Badger]

Your carb needs stripping and cleaning. Your cylinder is full of fuel, it should not squirt out of the plug hole. If your cylinder is full of fuel it will have got past the rings and contaminated the oil and that will need changing.
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Bikers make great organ donors, get 115 on your licence today.

[Tnias]

right, think I am in way over my head heh.

Thanks for the reply ill see what I can do.

[Lord Percy]

This may help:

Assembly diagram of your carburettor:

The floats are number 15.

https://images.cmsnl.com/img/partslists/suzuki-gz125-2000-uy-carburetor_bigsue0360fig9_75ca.gif

[Tnias]

nice! thank you