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General Category >> Rubber Side Down! >> Poor idle/dies in 3rd after spacer mod
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Message started by BeeBux on 10/16/23 at 08:40:44

Title: Poor idle/dies in 3rd after spacer mod
Post by BeeBux on 10/16/23 at 08:40:44

Things were going ok after I rejetted and did my spacer mod, although I suspected it was running rich in mid range, so I took the slide back out and lo and behold, I put the washers in the wrong place (under the c-clip)! So I put them where they belong and added one for a total of 3. Now the bike will start, idle normally for a few minutes, then begins to die unless I hit the throttle. It will ride roughly in 1st and 2nd, but dies immediately upon shifting into 3rd. Any thoughts? Maybe the needle is jammed up? Would this affect the idle circuit? Thanks in advance.

Title: Re: Poor idle/dies in 3rd after spacer mod
Post by BeeBux on 10/16/23 at 15:19:57

I found a thread that suggested turning the petcock to ‘prime’ to bypass the vacuum bladder in there, now she goes like normal. Sound better than before in fact! Any thoughts on what happened to the petcock during tank removal? Just some crud sloshing into the filter tubes (does the prime setting bypass these as well?). Anyhow, happy to see I didn’t Jack anything up in the carb!

Title: Re: Poor idle/dies in 3rd after spacer mod
Post by Gary_in_NJ on 10/16/23 at 15:51:23

Replace the petcock with a Raptor unit.

Title: Re: Poor idle/dies in 3rd after spacer mod
Post by ohiomoto on 10/16/23 at 17:20:13

33393D373C353138666064540 wrote:

Replace the petcock with a Raptor unit.

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What he said, and get the OEM Yamaha for best results.

Title: Re: Poor idle/dies in 3rd after spacer mod
Post by J Mac on 10/20/23 at 17:17:35

Ah yes, the good old petcork. It's that insidious item that will mimic symptoms of issues with other parts and make you pull your hair out. That stupid piece of junk wasted all sorts of time and effort on my 2003. Besides, the poor design, I think mine wasn't screwed together tightly from the factory. One of the first things I did with my 2012 last fall was to install the Raptor unit.