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Message: [QUOTE="JT2Fast4u, post: 873427, member: 57953"] Hi. I just finished rebuilding the top-end on a 87 Yamaha BW80, & when I went too start it up, the first time, it started right up after a couple of kicks. But It doesn't really want to idle very well. Here's what it does...After warming it, & choke turned off, I set the idle to specs, but after say a minute of idling fine, it will suddenly drop down real, real low, & stall if i don't give it some gas. Then after giving it gas, the idle will be high, then it will jump around between low & high (idle speed).It's like it wont stay at the correct idle speed for longer then a minute or so. It also seems to have just a tiny bit of a hesitation when giving it gas (off idle),But it's barely noticable. Also, with the air screw at the factory spec of 1 1/4 turns out, it runs terrible & won't even idle at all. The only place it runs decent at is just a little less then a 1/2 of a turn out. It has all the stock jetting in it, & I have checked the float height a dozen times already. The only thing I'm not sure about is the jet needle clip position. The spec call for it to be at "4" are they counting from the bottom or the top? One other thing I should mention is that I put in about 1/3 of a gal. of mixed gas (40:1) into the tank, along with about 2/3 gal.straight premium gas. It's an auto oil injection system, I only did that because I wasn't positive that the oil pump was working (just to be safe, thats all). Sorry for the long post, but I wanted to give you guys as much detail about it as I could. Does anyone have any suggestions on what I should do to get this idle problem right? Thanks in advance. JT2Fast4u [/QUOTE]

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