2005 Gilera Runner VX 125 - Answered Questions & Fixed issues

put a 172cc kit on it.....& try some new rollers if its slow to get to 40mph

Try a new spark plug just to rule that out. Sometimes they (spark plugs) just die without warning. Then check the plug lead, to rule that out too. Work back from there, good luck.

acid overflow is caused by overheating, so there is a short someplace,disconnect the battery and neutralize the leaked acid with baking soda dissolved in water and remove the battery. (the short can even be internal, in the battery) Replace the battery with a new one,connecting a voltmeter between the negative terminal and its cable. (An ampmeter of t least 10 amps capacity would be better.) With the key off, the meter should read zero. a reading indicates a short to ground somewhere. Trace all wires, look carefully where wires go through holes or past edges for bare or burned wires. When the meter reads zero, you can turn on the ignition and gingerly touch the negative cable to the negative terminal and watch for a spark, it should be small, assuming the ignition is battery operated, not by magneto. Turn on the lights should cause a slightly larger spark. A big spark and dimming of the lights means there is still a big short you have to find. Otherwise, turn off the key , hook up the negative cable, firmly but easy to disconnect, and try the system.

If you are requiring more fuel and it isn't getting there, look for a clogged fuel filter. Also check air filter and carb float bowl for crud build up from gasolin.

Turn the screw all the way in snug clockwise then 3/4 turn counterclockwise. Then stop. You should be ready to start the motor.

problem with you imobiliser

check your starter switch b/c most likely there is a shoft in the wire to the button...you should be able to change that and possibly the kill switch and it be good to vo if nit look at you ignition switch wjringas well

Something is loose . Check exhaust bafflers

overhaul your carb, adjust air screw, if it wont work, take off the air filter and try, if it does work, replace air filter

check the timing, spark plug.spark must be brownishin color if its not, adjust your air fuel mixture. try removing the air filter if it will work. if not, check if your compression.

It is a 2 stroke there isn't any oil in your engine perse, basically your bike either runs premix fuel or it has a oil reservoir that injects oil in to the fuel mix. 2 strokes mix fuel and oil together in the crankcase, that is why 2 strokes are somewhat smokey. The oil that is injected or in the case of premix is what is used to lubricate the engines internals. So you won't be able to change the oil by draining it out of the engine block. If it has an oil reservoir you will need to top that up from time to time.

Eww. Umm. Try to put it back together best you can and try to get another key made. Or you could just hotwire it every time.

Has it been laid up for months? Did you leave any gas in it untreated? You may need to boil out the gas tank . Try a carb cleaner first that you add to the gas.Check the plugs.Are they black/oily (too rich / worn ring), Tan ( correct ).they tell a lot about the condition of the engine. Good Luck

thats the problem with scooters.. it needs to take out all the plastic parts to get access at spark. the spark usually is on right foot or in front behide fridge

suspected bad ground connection within wires to frame.

h.t lead

If you decide to go to a garage they will charge you a little fortune if you need help with this let me know i have done these engines before few hours of work. Who told you the gasket has gone? some times the head cracks and oil mixes with water. Thanks

u are better off replacing the whole engine bec in my exsperince u will spend around £200 pound fixing that u could pick up a another gilera runner engine for £150-£200 from ebay etc

Have you tried bob wright motorcycles they are based in westernsuper-mare but they are a gilera stockist new and used parts and offer mail order check them out on the web.

I'm not trying to be a smarta** but if you have an afterhours locksmith you can call them or if it were me I would figure out how the ignition switch comes out got to Napa or Autozone and see if they can match your switch up with a new oem switch! Best of luck either way will probably run you say 30 dollars or so if you catch a mobile locksmith during business hours he might do it for a little less be prepaired though you might have to show proof that you own the scooter or have permission to have it!