GreenStreak Posted October 10, 2017 Share Posted October 10, 2017 (edited) I just went through and cleaned all the carbs on the Thundercat they're all back on. I started up and it runs good, excellent in fact. The only thing that concerns me is that when I rev the engine I am getting a pretty good amount of fuel Vapor coming out of the carbs. Please note when I was doing this the airbox was not installed. I know I probably should have looked at the Jets for numbers but I did not. I don't know what mains are in it. I don't know if it's ever been rejetted, it may still have the Jets in it that were put in at the factory. Any ideas? Is it normal to see fuel misting out of the carbs when you rev it? it does not do it at an idle. Edited October 10, 2017 by GreenStreak Quote Link to comment Share on other sites More sharing options...
XCR1250 Posted October 10, 2017 Share Posted October 10, 2017 Leaking reeds. Quote Link to comment Share on other sites More sharing options...
JEFF Posted October 10, 2017 Share Posted October 10, 2017 (edited) Pretty normal on a big cat to have fuel fogging out the inlet. Every one I've ever had did it new. It keeps the airbox clean... If you do nothing else to that sled take the shelf out of the airbox. It's a pretty bad restriction. Edited October 10, 2017 by JEFF Quote Link to comment Share on other sites More sharing options...
HSR Posted October 10, 2017 Share Posted October 10, 2017 To grow one's thumb back???????? Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted October 11, 2017 Author Share Posted October 11, 2017 Listen, i aint the guy i was, but i see you guys are the same. I have helped plenty of people with car advice, without giving anyone a drop of shit or made em feel dumb. I always did it with respect and if you don't or can't respect that and give me an ounce of courtesy I'll find another place that will. FS is the only site i want to visit but there are other places. 2 1 Quote Link to comment Share on other sites More sharing options...
Gold Member Kivalo Posted October 11, 2017 Gold Member Share Posted October 11, 2017 2 minutes ago, GreenStreak said: Listen, i aint the guy i was, but i see you guys are the same. I have helped plenty of people with car advice, without giving anyone a drop of shit or made em feel dumb. I always did it with respect and if you don't or can't respect that and give me an ounce of courtesy I'll find another place that will. FS is the only site i want to visit but there are other places. Come on, John, you know this place! Quote Link to comment Share on other sites More sharing options...
bussman Posted October 11, 2017 Share Posted October 11, 2017 Isn't this normal when running without the airbox? 1 Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted October 11, 2017 Author Share Posted October 11, 2017 56 minutes ago, bussman said: Isn't this normal when running without the airbox? Thank you Buss, thats what I wanted to know Quote Link to comment Share on other sites More sharing options...
Angry ginger Posted October 11, 2017 Share Posted October 11, 2017 (edited) 1 hour ago, GreenStreak said: Listen, i aint the guy i was, but i see you guys are the same. I have helped plenty of people with car advice, without giving anyone a drop of shit or made em feel dumb. I always did it with respect and if you don't or can't respect that and give me an ounce of courtesy I'll find another place that will. FS is the only site i want to visit but there are other places. well said. Edited October 11, 2017 by Angry ginger Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted October 11, 2017 Author Share Posted October 11, 2017 1 hour ago, XCR1250 said: Leaking reeds. With case reeds? Besides wouldn't throttle response suck if the Reeds were leaking? Quote Link to comment Share on other sites More sharing options...
1jkw Posted October 11, 2017 Share Posted October 11, 2017 I'm not familiar with cats is this round or flat slides? Quote Link to comment Share on other sites More sharing options...
bussman Posted October 11, 2017 Share Posted October 11, 2017 4 minutes ago, GreenStreak said: Thank you Buss, thats what I wanted to know Funny, I've mainly had Cats but 90% of my experience with triples has been working on Polaris and Yamaha. In fact I've never even owned a triple. 1 Quote Link to comment Share on other sites More sharing options...
XCR1250 Posted October 11, 2017 Share Posted October 11, 2017 19 minutes ago, GreenStreak said: With case reeds? Besides wouldn't throttle response suck if the Reeds were leaking? Only if they leak lots. I have to replace my reeds every few years especially on the triple 1200cc+ big bore sleds. Edges chip/crack then they spit some fuel, listen a little spit back is rather common. 1 Quote Link to comment Share on other sites More sharing options...
JEFF Posted October 11, 2017 Share Posted October 11, 2017 1 hour ago, GreenStreak said: With case reeds? Besides wouldn't throttle response suck if the Reeds were leaking? If they're leaking you'd have shit throttle response. They all mist a bit of fuel, when the air box is on it it gets sucked back into the engine. 1 Quote Link to comment Share on other sites More sharing options...
hwytohell Posted October 11, 2017 Share Posted October 11, 2017 GreenStreak , enjoy your Thundercat !! , I poured a war chest of monies into Vmax4's trying to beat them. 2 Quote Link to comment Share on other sites More sharing options...
Platinum Contributing Member Skidooski Posted October 11, 2017 Platinum Contributing Member Share Posted October 11, 2017 My 975 and 1006 Doo triples do this but they are also jetted fat too. Pretty common IMO 1 Quote Link to comment Share on other sites More sharing options...
MiSledder Posted October 11, 2017 Share Posted October 11, 2017 11 hours ago, GreenStreak said: Listen, i aint the guy i was, but i see you guys are the same. I have helped plenty of people with car advice, without giving anyone a drop of shit or made em feel dumb. I always did it with respect and if you don't or can't respect that and give me an ounce of courtesy I'll find another place that will. FS is the only site i want to visit but there are other places. True, you told me why my upper plenum was burning a hole in it, plugged cat sending hot vapors through the egr. I never seen vapor mist coming from carbs but those carbs are notorious for the choke plunger seizes or gets sticky, make sure those are clean work fully 1 Quote Link to comment Share on other sites More sharing options...
Platinum Contributing Member Highmark Posted October 11, 2017 Platinum Contributing Member Share Posted October 11, 2017 12 hours ago, JEFF said: Pretty normal on a big cat to have fuel fogging out the inlet. Every one I've ever had did it new. It keeps the airbox clean... If you do nothing else to that sled take the shelf out of the airbox. It's a pretty bad restriction. Yep. Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted October 12, 2017 Author Share Posted October 12, 2017 On 10/10/2017 at 7:35 PM, JEFF said: Pretty normal on a big cat to have fuel fogging out the inlet. Every one I've ever had did it new. It keeps the airbox clean... If you do nothing else to that sled take the shelf out of the airbox. It's a pretty bad restriction. It has a D&D power breather on it Quote Link to comment Share on other sites More sharing options...
JEFF Posted October 12, 2017 Share Posted October 12, 2017 59 minutes ago, GreenStreak said: It has a D&D power breather on it Okay, so pop it off and make sure the shelf that was in the air box has been removed as well. I'm sure it was... Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.