JasonsBanshee Posted January 29, 2009 Report Share Posted January 29, 2009 I got my bike out for the first time in a month or so the day before yesterday and yesterday during our snow storm. Since the last time I'd rode it I've put a Noss Head with 19cc domes and V force 3 reeds in it. The last time that I rode it the bike was running great and my jetting was spot on. When I put the reeds in I moved the needle clip one notch toward the blunt end, just like I've always done when installing these reeds. When I put the head on I also installed some new plugs. Now the issue, I fired my bike up, let it warm up for a little bit and took off. As soon as I took off it would bog and die. Eventually I got it to take off but it still wasn't right. I got to messing around with it and noticed that the plug caps seemed to be a little loose on the plug wires. So I tightened them up and clip them back on to the plug. My bike is a 2004 with stock plugs and caps. How often do these need replaced? ( When I get the time today, I'm going to order a new set since they are so cheap.) So after I got the plug caps tight it didn't die anymore however I still have ZERO low end and I pretty much have to rev it up and dump the clutch or it wants to bog down really bad. It's never done this before so I have no idea where to start. Surely by only moving my needle clip one notch wouldn't cause this. I'm beginning to wonder if the gas is too low of octane and not burning fast enough. When I swapped the head I still had the 93 octane in it and with the 19cc domes I probably will need to run race gas. I had a full tank of 93 and I am planning to burn through it and start running race gas, I just didn't want to throw away a full tank of gas to go to race gas. So what are some symptoms of too low of octane fuel? I know you'll get pinging but can it actually cause low end power loss too? What do you guys think? Quote Link to comment Share on other sites More sharing options...
GrMeyer Posted January 29, 2009 Report Share Posted January 29, 2009 compression check it!!! Everyone is deff for dome sizes. i have 20cc an only around 115 so i know i need a new top end after this dune season. but it runs like a champ...so I say if you kick over 150psi then you will need to start running 100oct... and the builders will need a full list of mods and jetting to help you get some where close...but im guessing it is oct. or have you also looked for a vac leak? Quote Link to comment Share on other sites More sharing options...
fastbanshee8 Posted January 29, 2009 Report Share Posted January 29, 2009 Maybe it's too lean on the bottom end, and you need to turn the air mixture screws in a bit. Quote Link to comment Share on other sites More sharing options...
SonOfSand Posted January 29, 2009 Report Share Posted January 29, 2009 I got my bike out for the first time in a month or so the day before yesterday and yesterday during our snow storm. Since the last time I'd rode it I've put a Noss Head with 19cc domes and V force 3 reeds in it. The last time that I rode it the bike was running great and my jetting was spot on. When I put the reeds in I moved the needle clip one notch toward the blunt end, just like I've always done when installing these reeds. When I put the head on I also installed some new plugs. Now the issue, I fired my bike up, let it warm up for a little bit and took off. As soon as I took off it would bog and die. Eventually I got it to take off but it still wasn't right. I got to messing around with it and noticed that the plug caps seemed to be a little loose on the plug wires. So I tightened them up and clip them back on to the plug. My bike is a 2004 with stock plugs and caps. How often do these need replaced? ( When I get the time today, I'm going to order a new set since they are so cheap.) So after I got the plug caps tight it didn't die anymore however I still have ZERO low end and I pretty much have to rev it up and dump the clutch or it wants to bog down really bad. It's never done this before so I have no idea where to start. Surely by only moving my needle clip one notch wouldn't cause this. I'm beginning to wonder if the gas is too low of octane and not burning fast enough. When I swapped the head I still had the 93 octane in it and with the 19cc domes I probably will need to run race gas. I had a full tank of 93 and I am planning to burn through it and start running race gas, I just didn't want to throw away a full tank of gas to go to race gas. So what are some symptoms of too low of octane fuel? I know you'll get pinging but can it actually cause low end power loss too? What do you guys think? If you raised the clip you made the bike leaner, in addition to that, the outside temp is lower, which means the air is denser (more air). More air will cause your bike to run lean if it was already on the edge. The symptons you stated sound like a lean condition as well. Move the clip the other way, you might need to go up one on the main as well. Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted January 29, 2009 Report Share Posted January 29, 2009 What carbs are on it? Quote Link to comment Share on other sites More sharing options...
JasonsBanshee Posted January 29, 2009 Author Report Share Posted January 29, 2009 It's not a vacuum leak. A vacuum leak would cause it to run lean and rev high. Basically, I have lost a lot of low end power. When it gets going it screams. When I let of the throttle the RPMs come back down just like they should. I'm going to test the compression to see where I'm at. I've ran 20cc domes on my last bike and was able to run 93 with no problems. I don't mind running race gas because there's a gas station that sells 110 octane Cam II right down the street from my house. I've just never heard of loosing low end after these mods. I'll probably drain the tank and put straight 110 in it. I'm also going to change to a more winter friendly oil (currently running Benol) since it's been in the 20s out. Quote Link to comment Share on other sites More sharing options...
JasonsBanshee Posted January 29, 2009 Author Report Share Posted January 29, 2009 What carbs are on it? Stockers Good idea on the air screws. I'll look into that as well. Quote Link to comment Share on other sites More sharing options...
blaster2006 Posted January 29, 2009 Report Share Posted January 29, 2009 I got my bike out for the first time in a month or so the day before yesterday and yesterday during our snow storm. Since the last time I'd rode it I've put a Noss Head with 19cc domes and V force 3 reeds in it. The last time that I rode it the bike was running great and my jetting was spot on. When I put the reeds in I moved the needle clip one notch toward the blunt end, just like I've always done when installing these reeds. When I put the head on I also installed some new plugs. Now the issue, I fired my bike up, let it warm up for a little bit and took off. As soon as I took off it would bog and die. Eventually I got it to take off but it still wasn't right. I got to messing around with it and noticed that the plug caps seemed to be a little loose on the plug wires. So I tightened them up and clip them back on to the plug. My bike is a 2004 with stock plugs and caps. How often do these need replaced? ( When I get the time today, I'm going to order a new set since they are so cheap.) So after I got the plug caps tight it didn't die anymore however I still have ZERO low end and I pretty much have to rev it up and dump the clutch or it wants to bog down really bad. It's never done this before so I have no idea where to start. Surely by only moving my needle clip one notch wouldn't cause this. I'm beginning to wonder if the gas is too low of octane and not burning fast enough. When I swapped the head I still had the 93 octane in it and with the 19cc domes I probably will need to run race gas. I had a full tank of 93 and I am planning to burn through it and start running race gas, I just didn't want to throw away a full tank of gas to go to race gas. So what are some symptoms of too low of octane fuel? I know you'll get pinging but can it actually cause low end power loss too? What do you guys think? i have the exact same problem... but when i get my bogs at low rpm on 1st and second when taking off the bog is not exactly a bog, the sound just dies as if its bogging, it sounds as if it turns off and it has no pull, then when i push the thorttle after 1 second it reacts and jumps and pulls, and the turning off thing, i later figured out that its a massive "air noise" coming into it, people told me its an air leak or dirty carbs. if when you say it "bogs" when you take off if you dont gas it full, if you mean it like sounds like its gonna turn off etc, thats exactly my problem too. btw it also happens to me SOMETIMES on idle. when its revving normally, the sound gets lower and lower and sounds like its gonna turn off, and then when you rev it you hear deep air throaty noises. but most of the time it idles fine, but that bog problem ALWAYS happens when you said it does for you also. Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted January 29, 2009 Report Share Posted January 29, 2009 Could the carb slides be in backwards, or the choke balance tube be off? Quote Link to comment Share on other sites More sharing options...
JasonsBanshee Posted January 29, 2009 Author Report Share Posted January 29, 2009 If you raised the clip you made the bike leaner, in addition to that, the outside temp is lower, which means the air is denser (more air). More air will cause your bike to run lean if it was already on the edge. The symptons you stated sound like a lean condition as well. Move the clip the other way, you might need to go up one on the main as well. Thanks, I do have it jetted for summer and haven't messed with it since. In the past on past bikes I've never had to change the jetting for winter. However, I did notice some blueing on my pipes right where they come out of the cylinders that I'd nave had before so maybe it is getting lean. I'll pull the plugs and see how they look. I may put the lid back on the air box to see if that helps any. Quote Link to comment Share on other sites More sharing options...
JasonsBanshee Posted January 29, 2009 Author Report Share Posted January 29, 2009 Could the carb slides be in backwards, or the choke balance tube be off? No, I've got all that on okay. Thanks for the thoughts though! Quote Link to comment Share on other sites More sharing options...
magz Posted January 29, 2009 Report Share Posted January 29, 2009 youre just lean, turn you air idle screw in and go the opposite direction on your needle, get bigger mains too. its always better to be rich then to be lean. Quote Link to comment Share on other sites More sharing options...
05.Banshee.SE Posted January 29, 2009 Report Share Posted January 29, 2009 Bluing pipes mean a lean condition? Even if they are bare metal pipes? Huh... Quote Link to comment Share on other sites More sharing options...
JasonsBanshee Posted January 29, 2009 Author Report Share Posted January 29, 2009 youre just lean, turn you air idle screw in and go the opposite direction on your needle, get bigger mains too. its always better to be rich then to be lean. When adjusting the air screws how much do you go each time? I want to say 1/4 turn at a time but I can't remember for sure. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted January 29, 2009 Report Share Posted January 29, 2009 To set air screws. Warm the bike up. Start with the air screws 1/2 turn out each. Go for a ride. Turn each screw out 1/4 turn...wait 30 seconds for the adjustment to "take effect" Go for a ride. Repeat until you get the highest idle possible by adjusting the air screws 1/4 turn at a time. If you have them turned out from seated (all the way in) less than one full turn out.....get bigger pilots. Put fresh gas in the bike if you haven't already. Put new plug caps on the coil leads. Quote Link to comment Share on other sites More sharing options...
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