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Well, after my TCI burning up fiasco, the bike has run really well. Couldnt diagnose a mid rpm stumble, and WOT major stumble, but all was well other than that. I parked the bike fri, and basically didnt ride all weekend, dealing with schoolwork. I go to ride today, and the bike just wants to act stupid. Under 50 mph, as long as i only pull the throttle half way, then the bike acted fine until about 6k rpms, then it would stumble and miss. over 50-60 mph, the bike just had no power. i could barely ride on the freeway...filled up a fresh tank, and tried riding it out. 40 miles down and the problem is still there. it almost feels like its a vacuum problem, or the bikes not getting fule. i already checked and ohmed the pickup wires last month when i went completely through the ignition system. everything was fine. 2 months ago i had completely gone through the carbs. this problem feels different than one ive already had. i know my petcocks are leaking, i have a petcock rebuild kit. i still have my octy, could that be causing a problem?
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79 XS11 special "Loki" - homemade 4-2 exhaust, pod filters, rebuilt forks with progressive springs, tkat fork brace, progressive shocks, rebuilt all brakes and MC's, rebuilt carbs with #142.5 main and #42.5 pilot, a custom front and chin fairing, and a handmade set of saddlebags....
09 YZF-R1 " Toothless"
04 Buell XB12R "Butterfly"
"I had a name at some point, a birth-name, but now everyone just calls me Wolf...."
Wolf
Moto Militia MC -
Try running your petcocks in the prime position. That will completely bypass the octy.Originally posted by airborneXS View Post
My octy went fruit on the way to Minnesota last summer and I rode the whole 1800-2000 miles on prime. Fixed the octy when I got home.Last edited by BA80; 05-02-2012, 06:25 PM.Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.
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What could go wrong in the octy? Tried moving both petcocks around on every setting while in the freeway, no noticeable difference...79 XS11 special "Loki" - homemade 4-2 exhaust, pod filters, rebuilt forks with progressive springs, tkat fork brace, progressive shocks, rebuilt all brakes and MC's, rebuilt carbs with #142.5 main and #42.5 pilot, a custom front and chin fairing, and a handmade set of saddlebags....
09 YZF-R1 " Toothless"
04 Buell XB12R "Butterfly"
"I had a name at some point, a birth-name, but now everyone just calls me Wolf...."
Wolf
Moto Militia MCComment
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Like BA80 said if the prime position does not change anything then the octy is not the problem. An octy will fail if it leaks fuel or it will fail if there is not enough vacuum to open it. Other than the obvious lines to it, it is also possible to have a pinhole leak in the diagphragms on the octy valve. Point is that if it does not change while in the prime position the Octy is not at fault.2-79 XS1100 SF
2-78 XS1100 E Best bike Ever
80 XS 1100 SG Big bore kit but not fully running yet.
Couple of more parts bikes of which 2 more will live!Comment
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Just a note here but if the petocks are leaking it will not matter at all when the bike is running. Fuel is supposed to run through them then so no big deal.2-79 XS1100 SF
2-78 XS1100 E Best bike Ever
80 XS 1100 SG Big bore kit but not fully running yet.
Couple of more parts bikes of which 2 more will live!Comment
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I think you need to check all the ignition components again. I went through the same thing when I first got my 11. An ignition problem can really seem like a fuel problem.
Pulled the carbs multiple times and finally discovered an intermittent pickup coil wire problem.Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.Comment
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I guess I gotta go back to the pickup coils...could the vacuum advance fail?79 XS11 special "Loki" - homemade 4-2 exhaust, pod filters, rebuilt forks with progressive springs, tkat fork brace, progressive shocks, rebuilt all brakes and MC's, rebuilt carbs with #142.5 main and #42.5 pilot, a custom front and chin fairing, and a handmade set of saddlebags....
09 YZF-R1 " Toothless"
04 Buell XB12R "Butterfly"
"I had a name at some point, a birth-name, but now everyone just calls me Wolf...."
Wolf
Moto Militia MCComment
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Yes, that's easy to check though. Just suck.
Ahhhhhh..........no homo?Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.Comment
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Haha...suck through the vacuum hose going to the octy? What am I looking for?79 XS11 special "Loki" - homemade 4-2 exhaust, pod filters, rebuilt forks with progressive springs, tkat fork brace, progressive shocks, rebuilt all brakes and MC's, rebuilt carbs with #142.5 main and #42.5 pilot, a custom front and chin fairing, and a handmade set of saddlebags....
09 YZF-R1 " Toothless"
04 Buell XB12R "Butterfly"
"I had a name at some point, a birth-name, but now everyone just calls me Wolf...."
Wolf
Moto Militia MCComment
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No.......the hose plugged into the #2 carb. If it holds vacuum the diaphragm is good.
You'll have to pull the left engine cover to make sure the breaker plate and centrifugal advance is free.Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.Comment
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the hose in the number 2 carb is coming from the vacuum behind the left engine cover? and the the octy feeds a vacuum line into the #2 carb boot?79 XS11 special "Loki" - homemade 4-2 exhaust, pod filters, rebuilt forks with progressive springs, tkat fork brace, progressive shocks, rebuilt all brakes and MC's, rebuilt carbs with #142.5 main and #42.5 pilot, a custom front and chin fairing, and a handmade set of saddlebags....
09 YZF-R1 " Toothless"
04 Buell XB12R "Butterfly"
"I had a name at some point, a birth-name, but now everyone just calls me Wolf...."
Wolf
Moto Militia MCComment
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id drop ur main jets down a size or 2,
if there to big itll act the way ur saying,
also check the size of ur air jet, if its 180/85, drop back ur pilot
jets back to 42.5, if the air jet is around 210 then the
45 pilots should be fine, have a look at ur plugs
il bet there running way rich.pete
new owner of
08 gen2 hayabusa
former owner
1981 xs1100 RH (aus) (5N5)
zrx carbs
18mm float height
145 main jets
38 pilots
slide needle shimmed .5mm washer
fitted with v/stax and uni pod filters
[url]http://www.youtube.com/watch?v=3pA8dwxmAVA&feature=mfu_in_order&list=UL[/url]Comment
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got new jets coming 2 sizes bigger and 2 sizes smaller, also making a carb sync tool...i have 210 air jets, so ur saying pop those in
and see?79 XS11 special "Loki" - homemade 4-2 exhaust, pod filters, rebuilt forks with progressive springs, tkat fork brace, progressive shocks, rebuilt all brakes and MC's, rebuilt carbs with #142.5 main and #42.5 pilot, a custom front and chin fairing, and a handmade set of saddlebags....
09 YZF-R1 " Toothless"
04 Buell XB12R "Butterfly"
"I had a name at some point, a birth-name, but now everyone just calls me Wolf...."
Wolf
Moto Militia MCComment
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I would put everything back to stock and start all over again. Here is a jetting chart so you KNOW what you need.......
Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.Comment
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....................Originally posted by BA80 View PostNathan
KD9ARL
μολὼν λαβέ
1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters
Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner
In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.
Theodore RooseveltComment
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