OP
UTC

Member
T5, GTS, '66 GT
Joined: UTC
Posts: 9
Location: Scotland
 
Member
T5, GTS, '66 GT
Joined: UTC
Posts: 9
Location: Scotland
UTC quote
was driving in heavy slow motorway traffic, GT125 with Malossi 210 kit cut out but restarted, then backfired alot and cut out..... pulled in and saw that 2 rubber pipes had melted at the nipples
not the tube that carries the coolant
what would cause it to overheat so much that the pipes melted? is the thermostat goosed or is there another reason??

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@hachi avatar
UTC

Ossessionato
2005 GT 200
Joined: UTC
Posts: 2083
Location: Montgomery,Alabama
 
Ossessionato
@hachi avatar
2005 GT 200
Joined: UTC
Posts: 2083
Location: Montgomery,Alabama
UTC quote
Markauk, it looks like they dried out and cracked with age. Cut a little off and re-install them(or replace them all together) and you should be good to go. I wouldn't suspect the thermostat has gone bad. I had the same symptoms when one of the brass sleeves going into the intake manifold pulled out. GT 200, erratic idle, deceleration popping issue resolved
@caschnd1 avatar
UTC

Grumpy Biker
1980 Vespa P200e (sold), 2002 Vespa ET4 (sold), 1949 Harley-Davidson FL
Joined: UTC
Posts: 5573
Location: Sparks, Nevada, USA
 
Grumpy Biker
@caschnd1 avatar
1980 Vespa P200e (sold), 2002 Vespa ET4 (sold), 1949 Harley-Davidson FL
Joined: UTC
Posts: 5573
Location: Sparks, Nevada, USA
UTC quote
Cutting off the ends and sticking them back on will work. But it's probably more of a temporary solution. The hoses are likely dry rotted from the many heat cycles. I would plan to replace them as soon as possible.

The backfiring and cutting-out was caused by your engine sucking a large amount of unregulated air through the open pipes. This caused a significant lean condition and leads to the backfiring/cutting-out. That should all go away after you get those open nipples covered with the proper hoses again.

-Craig
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