I have a gilera runner 125 sp just dun full engine re-build and its all together getting great spark, petrol and oil getting threw.compression is good but will not start. wen u kick it smoke comes from exhaust and seemz like it going to start but doesnt. help me someone PLEASE !!!!!1
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I would suggest you do a compression test. Low compression could cause these symptoms.
However you haven't mentioned if the bike has any trouble when idling or if it is lacking power at all?
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.
coil lead plug cap needs replacing , no shield to protect spark plug from getting wet due to weather/water splash. electrical spray lubricant requires from damp start problem
The Gilera SC125 does not have an oil filter, the two stroke oil from the oil tank lubricates the engine by injection into the inlet with the petrol. The oil in the engine is only for the gearbox and clutch. If you want to change this drain it by removing the drain plug underneath the engine, refit the plug and refill with the correct quantity of motorcycle gearbox oil or good quality engine oil. do not use an EP rated oil or the clutch will slip.
Sounds like your oil/ fuel mixing valve may need to be replaced. New gaskets for it at least. Hopefullly your engine gaskets are ok, that's the first thing I thought of until I saw it was a 2 stroke.
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
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