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Old 11-16-2018, 06:42 PM   #1
yamahahaha   yamahahaha is offline
 
Join Date: Nov 2018
Posts: 6
Hi Help! Yamaha Zuma 2-stroke idles but dies with throttle

2005 Yamaha Zuma 49cc 2T

Symptom: Starts and idles OK cold and drives just fine when giving it throttle for 45 seconds, then dies. Re-starts and idles fine, but opening the throttle at all kills it right away. If I let it sit for a few hours, it will run normally for another 45 seconds but giving it throttle kills it after that.

Checked: spark, fuel delivery to carb, fuel mixture, idle speed, vacuum line seal, oil level, fuel level, air filter, air box, intake manifold

Replaced: entire carbeurator, air intake box and filter

Now I don't know what to do. Ideas? Thanks.



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