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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
disastrous '71 yamaha CT1 restore?
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[QUOTE="Skookill, post: 1345750, member: 78749"] Are you sure you got the carb totally clean, Jets and all, let me repeat Jets... Jets... Jets!!? All those little holes. My 70 AT1 125 ran like crap untill I cleaned the carb a couple times and really got into all the little spots. These old bikes get alot of "sludge" from the tanks and a clean carb can muck up pretty fast. With your air screw set as is , somethings not right w/ the carb. Should be about a turn & 1/2 or so. Also put a fuel filter in the line from the tank. Just a tiny bit of crud knocked loose from the tank when riding can clog up you carb and make it run poorly. Much improved with this done. With the amount of smoke your getting also could have blown a cranck shaft seal. They tend to dry up and crack when these bikes sit for that long without running. My 70 AT1 sat for 25 years and (Knock on wood) I am still running the orig. seals. Good news is you can still find them on EBAY and I have an engine seal kit ready to go when they fail. Cheap and still availible. Another thought, try running a tank of pre mix fuel, your injector could be wacked. I bypassed mine because it was leaking and just do the pre mix. 32-1. And good god man.... POST PICS!!!! [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
disastrous '71 yamaha CT1 restore?
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