OP
@peliscan avatar
UTC

Member
ET4 150ccm 2001
Joined: UTC
Posts: 18
Location: Budapest, Hungary
 
Member
@peliscan avatar
ET4 150ccm 2001
Joined: UTC
Posts: 18
Location: Budapest, Hungary
UTC quote
Hello all!

I've a gas leak, and I can't find where. First I guessed it comes from the owerflow pipe from the carburettor, but the end of the pipe seems dry and clean.

I left the bike with almost full tank yesterday, and in the morning it's almost empty.

External inline image provided by member with no explanatory text

Weird thing, it's not dripping constantly, if the engine is running, there is no sign of leakage. When I try to locate the leak, it's not leaking. When I move it around (engine not running) it leaks sometimes.

Do you have any idea, what could be the problem?

Unfortunately, I've got a tip-over two weeks ago (ET4 150 stalls, oil pours from engine. Any idea why? (pic)) but I'm not sure this leak is related, it might have happened once before the tip-over.

Thank you for the help!
@lx125man avatar
UTC

Molto Verboso
Vespa LX 125
Joined: UTC
Posts: 1204
Location: UK
 
Molto Verboso
@lx125man avatar
Vespa LX 125
Joined: UTC
Posts: 1204
Location: UK
UTC quote
Someone pinched your fuel tap?
@araw avatar
UTC

Hooked
'04 ET4 190 +hotcam, Scorp Exhaust, Stereo. SPEED HOLES!
Joined: UTC
Posts: 190
Location: SLC, UT
 
Hooked
@araw avatar
'04 ET4 190 +hotcam, Scorp Exhaust, Stereo. SPEED HOLES!
Joined: UTC
Posts: 190
Location: SLC, UT
UTC quote
Stock fuel lines are crap, if it SOMEHOW still has the original, I would blame that. Esp where it connects to the fuel tap.
@caschnd1 avatar
UTC

Grumpy Biker
1980 Vespa P200e (sold), 2002 Vespa ET4 (sold), 1949 Harley-Davidson FL
Joined: UTC
Posts: 5423
Location: Sparks, Nevada, USA
 
Grumpy Biker
@caschnd1 avatar
1980 Vespa P200e (sold), 2002 Vespa ET4 (sold), 1949 Harley-Davidson FL
Joined: UTC
Posts: 5423
Location: Sparks, Nevada, USA
UTC quote
Check your oil. If it is overfull and smells of petrol, see this thread... Petrol in oil tank

-Craig
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