Sym Jet 50 wont start

[davelester]

Hi im looking to buy this bike to repair. The woman said it was running last week then couple days later it wouldnt turn over. She said it trys to start and she has checked battery and there is a spark from plug. Any ideas what problem could be ? Thanks

[GrumpyGuts]

Stale fuel? No fuel? Blocked carb? Fucked stator motor? Seized engine?
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My Bikes: Lifan Beat 125cc '11 -> Suzuki B120P '76 -> Suzuki EN 125-2A '08 -> Honda CG 125 '04 -> Honda CB600F Hornet '98 -> Kawasaki ZZR 600 '99 -> Kawasaki GPZ 500S '95 (Current)
Theory test passed - 09/02/2012 >>>> Module 1 passed 24/07/2012 >>>> Module 2 passed 24/10/2012

[Matt-]

before i would do anything i would do a compression test to see what state the engine is in.

obviously fueling is the issue, i don't think it would be stale fuel because fuel takes a while to go stale, i would first clean the air filter out ( wash it & dry out ) once i had done that i would give the carb a good clean and going over.

-Check & blow out jet's
-Clean bowl with carb cleaner or petrol with a tooth brush
-Make sure needle valve is working and in good condition
-Also make sure the float is free and not stuck and has not got holes in it.

Tip - be very careful with float be sure not to alter the float height.

Good Luck

Matt
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RIP jack (wheelie king), you will never be forgotten.
Current Bike's - Road Legal TZR 125 Pitbike, Aprilia SR50R 2010