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37 Posts
Howdy. I was going to clean my UNI 2-stage airfilter, but I cracked the lid pretty bad, so I decided to drill 4 pretty big holes in the lid with a hole saw to get rid of most of the cracks. I cleaned the filter than threw it all together, and once I started it up and got running, I had a pretty horrible mid-throttle bog. I always had a little bit of mid throttle bog, but now it's pretty bad, and will kill it unless I take it back to an idle or get it up near WOT. And also it doesn't seem to want to run or idle nicely unless I leave it almost full choked. So I think it's pretty obvious that it's getting too much air.
Any how, I guess the guy before me did quite a few mods (like the uni 2-stage airfilter), and a really honkin loud yoshi exhaust (seriously FRACKING loud!) with the spark-arrester (not sure if it's the stock header. Think it is...), and when I bought it, he said he had just jetted it, though I'm not sure with what. Not sure how to tell if it's jetted, but right now when I took off the jet, the little brass screw has 148 stamped into it, and the brass "sleeve" (what I assume is the jet??) has four holes in it. Also the needle is set on the middle clip position, on 3-out-of-5 possible positions if that makes sense. I typically run the standard 87-octane if that makes a difference.
So anyhoo, any recommendations on what to set the clip at, and how many turns I should turn the fuel mixture screw (I read 3 full turns is stock)? If any more info is need, please let me know what'll help, and I'll try to figure it out.
Sorry about the lack of knowledge about these carbs. This is my first raptor, and I've only had diesel trucks, so not much knowledge about working with carbs lol. Though I know my way around a wrench pretty well!
Thanks a ton yall!
Any how, I guess the guy before me did quite a few mods (like the uni 2-stage airfilter), and a really honkin loud yoshi exhaust (seriously FRACKING loud!) with the spark-arrester (not sure if it's the stock header. Think it is...), and when I bought it, he said he had just jetted it, though I'm not sure with what. Not sure how to tell if it's jetted, but right now when I took off the jet, the little brass screw has 148 stamped into it, and the brass "sleeve" (what I assume is the jet??) has four holes in it. Also the needle is set on the middle clip position, on 3-out-of-5 possible positions if that makes sense. I typically run the standard 87-octane if that makes a difference.
So anyhoo, any recommendations on what to set the clip at, and how many turns I should turn the fuel mixture screw (I read 3 full turns is stock)? If any more info is need, please let me know what'll help, and I'll try to figure it out.
Sorry about the lack of knowledge about these carbs. This is my first raptor, and I've only had diesel trucks, so not much knowledge about working with carbs lol. Though I know my way around a wrench pretty well!
Thanks a ton yall!