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VOODOOCHILD

Bog Bog Bog

10 posts in this topic

I have a 98' YZ400F. It is stock jetting, pipe ,everything. I just rode it about 3 weeks ago and it ran great. Now it takes longer to warm up and there is a bog off idle that has never been there. Anyone know where to start first? Right after idle when the throttle is applied it bogs for a second or so and then runs great. It starts easy and idles well too.Thanks.

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Did you wash the bike 3 weeks ago? Look for water in the fuel. If not that, there's something stuck in a jet.

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Thanks for the suggestions. I went ahead and changed my plug and cleaned the petcock. Never cleaned the petcock since I built the bike. The plug had been in there over a year. Just thought I would start fresh. I'll try these suggestions tommorrow. Thanks again.

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I have just now had an opportunity to look at this carb. Once I had it off the bike I found that an o-ring on the plastic T for the vents was rotted. I can't find a part number or any breakdown that shows the o-ring. Anyone know what to call this o-ring or where to find it? I also found that the AP rod would not move until I forced it. I'm still going to take the carb apart and check everything over. Since I have it apart I figured I would replace anything that was worn out. The area where the o-ring is at is where the two black plastic tees are held in by a rod that snaps over them to hold them in the holes. I can probably post a pic if need be. Thanks. :excuseme:

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I think I found the o-rings, but what is the model of carb I have? On top of the carb it says CR Flat. The only other numbers I find are 5BE1 00MA12. Thanks for the Sudco site. They have basically everything. Thanks.

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