AHHH help - Rs125 - Over Heating

[Mcyd]

Right well i think my rs is over heating or something,
What happens is this,

Ill start up the bike, it'll run for around 4 mins then just die on me no matter what i do , it gets to about 48 oC then when it drops down to like 42 oC itll start up again, i have no idea whats wrong but went to get it running , i miss riding.

To be honest i should of kept my Nsr 125.

Please help me out , if it all goes to shit the bikes being stripped n sold. if intrusted let me know.
____________________
Aprilia Rx 50 - Top Speed 70 - Sold - Honda nsr 125 - Speed 103 - Sold
Aprilia Rs 125 - Top Speed 121 - Sold - Honda Vfr 750 - Top Speed ? - Running
Suzuki Sv 650 S - Top Speed ? - Running - Ish

[Itchy]

At a guess vapour lock? , in that check the proximity of your inline fuel filter (you do have one right?) and fuel pipe to the engine.

In that if it is too close then the heat causes the petrol to vapourise inside the fuel line or filter causing a pressure block in the fuel line which causes fuel starvation.

A way to check this is to run the bike wait till it dies then splash (Carefully) some cold water on the fuel filter , if it starts up again fine there is your problem, if not its somewhere else.
____________________
Spain 2008France 2007Big one 2009 We all die. The goal isn't to live forever, the goal is to create something that will. In the end, your life will flash before your eyes. Make sure it is worth watching.

[Mcyd]

will a 2007 engine fit into a 2002 bike?
____________________
Aprilia Rx 50 - Top Speed 70 - Sold - Honda nsr 125 - Speed 103 - Sold
Aprilia Rs 125 - Top Speed 121 - Sold - Honda Vfr 750 - Top Speed ? - Running
Suzuki Sv 650 S - Top Speed ? - Running - Ish

[5v3d3b0]

You're jumping from the bike dying on you to buying a new engine? Show some commitment!
At least try what Itchy told you before even considering something else.

[Mcyd]

the engine out , its been in the garage they cant tell whats wrong with it, its anoying me i want to be ont he road again fed up of the bloody bus, see why?
____________________
Aprilia Rx 50 - Top Speed 70 - Sold - Honda nsr 125 - Speed 103 - Sold
Aprilia Rs 125 - Top Speed 121 - Sold - Honda Vfr 750 - Top Speed ? - Running
Suzuki Sv 650 S - Top Speed ? - Running - Ish

[Itchy]

Vapour lock test costs NOTHING, if it is vapour lock the fix is in pennies (ie wrap the filter or heat shield it.
____________________
Spain 2008France 2007Big one 2009 We all die. The goal isn't to live forever, the goal is to create something that will. In the end, your life will flash before your eyes. Make sure it is worth watching.

[Mcyd]

can you , liek grab a couple of diagrams togeather to help me out please?
____________________
Aprilia Rx 50 - Top Speed 70 - Sold - Honda nsr 125 - Speed 103 - Sold
Aprilia Rs 125 - Top Speed 121 - Sold - Honda Vfr 750 - Top Speed ? - Running
Suzuki Sv 650 S - Top Speed ? - Running - Ish

[Itchy]

[Mcyd]

just checked my bike there isnt one, goes from tank to carb
____________________
Aprilia Rx 50 - Top Speed 70 - Sold - Honda nsr 125 - Speed 103 - Sold
Aprilia Rs 125 - Top Speed 121 - Sold - Honda Vfr 750 - Top Speed ? - Running
Suzuki Sv 650 S - Top Speed ? - Running - Ish

[stirlinggaz]

hi,
no in line fuel filter on the rs.
only filter is in the carb, a gauze one.
oh & inside the fuel tank, behind the fuel tap, bugger to get at though.
suspect its nothing to do with overheating but carb related. as i have run the rs at around 100deg! when sitting in traffic, unless the thermostat or guage is dodgy.
try running it without the thermostat to rule it out.
time to take it back to basics.
got compression?-needing around 120psi +
got spark? (stick a new plug in)
got fuel? (keep the tank full & make sure the breathers arnt blocked, try it with the fuel cap open)
is the carb needing the floats adjusted?
cheers,
GAZ

[Mcyd]

right, my thermostat is always open,
brand new spark plug,
its got petrol,
the water pump spins with the gears
____________________
Aprilia Rx 50 - Top Speed 70 - Sold - Honda nsr 125 - Speed 103 - Sold
Aprilia Rs 125 - Top Speed 121 - Sold - Honda Vfr 750 - Top Speed ? - Running
Suzuki Sv 650 S - Top Speed ? - Running - Ish

[stirlinggaz]

hi,
start with the basics,
you say its a new plug, but are you actually getting a spark?
is petrol getting to the carb? (try opening the drain screw & see if any petrol dribbles/pours out)
what voltage is the battery showing? dont trust the lcd,use a multi-meter.
is the spark plug wet or dry after you try & start it?
is the engine back in the bike?
cheers,
GAZ

[Mcyd]

battery has been check is fine, it runs for four mins or so then cuts out
____________________
Aprilia Rx 50 - Top Speed 70 - Sold - Honda nsr 125 - Speed 103 - Sold
Aprilia Rs 125 - Top Speed 121 - Sold - Honda Vfr 750 - Top Speed ? - Running
Suzuki Sv 650 S - Top Speed ? - Running - Ish