Gilera DNA50???

mario · Scooby Slapper Joined: 19 May 2004 Karma :

Hey,

I have had problems with my DNA but can't find whats up with it?
My temperature display reads normal then goes to 100-120oC after about 5mins?
I've spent lots of time today looking at it, filled coolant tank went out for a while, temp was 120 but it wasn't over-flowing or anything like that?
Confused

Anyone know what could be up with it and how I could fix it???

Many Thanks
Mark

Lee_367 · Brolly Dolly Joined: 22 May 2004 Karma :

check the thermistor theat goes into the cylinder head, look for a dodgy connection.
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FragReaper · Two Stroke Sniffer Joined: 10 May 2004 Karma :

I'd be inclined to say it's a false reading as well, because my DNA takes about 15 mins steady riding to get up to 60o . Look for a dodgey connection either under the speedo or on the thermistor as Lee said
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Speedfight 50cc >> Gilera DNA 50 >> *test passed* >> Honda NSR 125R >> J reg Honda VFR 400R NC30 >> 06 Plate Yam R6

conpants · Spanner Monkey Joined: 20 May 2004 Karma :

could have a block in the system
drain it and flush it

mario · Scooby Slapper Joined: 19 May 2004 Karma :

Thanks for the help guys!
I've had a further look at it and i think its most likely the display is wrong!

Thanks
Mark

phill.c · Traffic Copper Joined: 13 May 2004 Karma :

the thermometer blows on them quite easy, you can check to see if it's blocked by undoing the cap and see if its getting pumped back round.

bikedudextrm · Traffic Copper Joined: 16 Oct 2003 Karma :

If the thermostat is naffed no coolant will be getting into the cylinder which would explain your problem so check that.
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Dup · Nova Slayer Joined: 25 Apr 2004 Karma :

NEVERMIND! 50's are different Embarassed

My 125's cooling system went tits up recently.

Just by your right leg there is the thermostat. The top half of it is black with a big tube coming out the top. Get a hammer with a bit of wood on the thermostat and give it a light but authroative tap. Chances are that might be stuck.

On the same side a little lower and further back is a grey metal engine casing with two tubes. This is basically your pump.

To drain the system get a bucket and drain the bottom tube. Now remove that plastic side with the two tubes and start the bike up. If the little fan (called imi-something) spins up, your fine, put it all back together. If not, remove the casing. Inside there is a bakelite flywheel type thing. If you can turn that and the fan thing turns, the motor has probably gone.

If you really want to know if it's a faulty reading, go out and get it to flashing point on the dash then put your hand on the radiator. If it's hot, its fine, if not you have a problem.

Open up the false tank and open up the coolant (when its cool! That shit gets hot and pressure spurts it out when it's hot) and then start the bike. If it's circulating properly, you should see a little jet of coolant.

Thats all i can suggest from my experience of my 125. I hope it's the same kind of system. I'll look into it now but it shouldn't be that different really. Other than this it's more than likely shitty Italian electrics. Then just run the hell away!

Biker_Dene · Crazy Courier Joined: 08 Jul 2004 Karma :

i had the trouble with mine and wen i took it to the shop the guys sead its the water bottle is faulty so they put a new 1 in for me and it was fine
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