SuzukiSavage.com - Cutting out / stumbling at highway speeds?

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Cutting out / stumbling at highway speeds? (Read 574 times)

justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Cutting out / stumbling at highway speeds? Reply #30 - 09/25/17 at 09:09:49 Clear tubing on the bowl drain curled up next to the bowl, open the drain, it'll show you the fuel level.
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Jeremy Junior Member Offline SuzukiSavage.com Rocks! Posts: 54 Philadelphia Gender:	Re: Cutting out / stumbling at highway speeds? Reply #31 - 09/25/17 at 09:54:18 Is it possible that’s if the float level is too low, it can’t feed enough gas at high RPM? I’m used to the opposite problem where the float let’s too much gas into the Bowl.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Cutting out / stumbling at highway speeds? Reply #32 - 09/25/17 at 10:13:19 justin_o_guy2 wrote on 09/25/17 at 09:09:49: Clear tubing on the bowl drain curled up next to the bowl, open the drain, it'll show you the fuel level. Check it.
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5112 Manteca , CA Gender:	Re: Cutting out / stumbling at highway speeds? Reply #33 - 09/25/17 at 12:30:11 JOG your a pretty fart smeller I mean smart fella !
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Cutting out / stumbling at highway speeds? Reply #34 - 09/26/17 at 10:07:24 I Wish I had been the guy who came up with that.
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5112 Manteca , CA Gender:	Re: Cutting out / stumbling at highway speeds? Reply #35 - 09/26/17 at 12:11:19 JOG, That will only work if atmospheric pressure is the same at the end of the tube and in float chamber ! In other words float bowl vent must be clear ! Great way to check it , wish I thought of it too !
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Cutting out / stumbling at highway speeds? Reply #36 - 09/26/17 at 12:17:30 What would cause a bowl of fuel with a coupla jets between it and the carb throat to have a pressure differential between it and atmospheric pressure?
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5112 Manteca , CA Gender:	Re: Cutting out / stumbling at highway speeds? Reply #37 - 09/26/17 at 15:10:46 I smell wood burning ! I knew I could get you thinking ! If the needle was seated and the pilot and vent were plugged. What if ?
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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: Cutting out / stumbling at highway speeds? Reply #38 - 09/26/17 at 15:36:13 What if both vent hoses on the bowl were plugged,and the needle was all the way down and the pilot jet was plugged,and the bike is under water but the open end of the hose is above the surface?HUH!
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5112 Manteca , CA Gender:	Re: Cutting out / stumbling at highway speeds? Reply #39 - 09/26/17 at 19:36:00 Batman , Now we really got him confused ! But I think you have to be south of the equator for it to happen like that !
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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: Cutting out / stumbling at highway speeds? Reply #40 - 09/26/17 at 21:24:49 Well I think Jeremy is the one confused,he shortened the intake to the carb so much he might as well have put the air filter right on the carb ,it wouldn't be any worse ,and he still hasn't done anything with the muffler,and doesn't know that a lollypop baffle won't help all that much.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Cutting out / stumbling at highway speeds? Reply #41 - 09/26/17 at 21:33:08 That Intake Theory didn't matter.
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Jeremy

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Re: Cutting out / stumbling at highway speeds?
Reply #42 - 09/27/17 at 03:54:34

Been pretty busy lately, so I haven't had time to do much of anything. I did put on 5/16 fuel hose and checked the float height, which seemed fine.

I ordered a replacement baffle for the Biltwell, but it hasn't even shipped yet. Once that comes in, I can measure the ID and see about getting a plug for it, then swap it into the muffler.

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Jeremy Junior Member Offline SuzukiSavage.com Rocks! Posts: 54 Philadelphia Gender:	Re: Cutting out / stumbling at highway speeds? Reply #43 - 09/27/17 at 04:46:50 Regarding intake length, is there a prescribed length that I should shoot for? Now that I have that 90 degree bend smoothed out some, I should be able to get a joiner and extend the length of the intake further, keeping a nice straight path right underneath the frame.
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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: Cutting out / stumbling at highway speeds? Reply #44 - 10/02/17 at 22:53:19 Jeremy gave you a way to find the length back on page 1,use the sight I suggested, to find rpm range you find useable ,divide rpm by 68.3 to give you the speed ranges. I used 17 " on the chart, but cut the intake length to 16'' ,1/2 the dia. of the 2" pipe I used to make the intake.
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