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  #1  
Old 04-01-2012, 11:19 PM
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airborneXS airborneXS is offline
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well i was left stranded again...

so after what ended up being the longest night of my life, flat tire, lost cell phone, yada yada yada, i was left stranded in downtown houston on a sunday morning at 9am, nobody in sight...it would appear that my 1 and 4 cylinder werent firing ( when i could get it to start i felt the pipes and 1 and 4 werent hot) ive posted about a WOT mis

http://www.xs11.com/forum/showthread...&highlight=WOT

still have yet to try to sort this out, and im not sure if they are related or not. Anywho, so i got the side panels, seat and tank off ( sitting on a downtown sidewalk btw) and i start fidling with wires and checking connections, it started and ran fine....i dont get it...
Also i tested it on the way home it was strong all the way, except the WOT issue was still there...
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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...."

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  #2  
Old 04-02-2012, 06:37 AM
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If you've got 1 & 4 cutting out it's an ignition problem. Check the coil that's running those 2 cylinders and the pickup coil wires. It is more than likely one of those. If not your probably looking at a TCI problem.
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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.

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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.

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  #3  
Old 04-02-2012, 07:02 AM
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Based upon the itermitent function, my best guess is the pick up coil wires.
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  #4  
Old 04-02-2012, 08:05 AM
MidniteSpec MidniteSpec is offline
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Had very nearly the same happen to me couple of years ago,,,no octy,split fuel feeds,,would lose 2 cylinders. Took me a while to find the issue, thinking electrical. Nope plugged fuel vent,,removed fiber disc been good ever since.
Just a thought.
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  #5  
Old 04-02-2012, 09:09 AM
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CatatonicBug CatatonicBug is offline
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The 1&4 cylinders run off the same coil. There is a chance that the coil lost a connection (possibly internally), then when you fiddled with it, the connection was restored. Try tugging on all the coil wires while it's running and see if that makes a difference.
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  #6  
Old 04-02-2012, 09:21 AM
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Quote:
Originally Posted by MidniteSpec View Post
Had very nearly the same happen to me couple of years ago,,,no octy,split fuel feeds,,would lose 2 cylinders. Took me a while to find the issue, thinking electrical. Nope plugged fuel vent,,removed fiber disc been good ever since.
Just a thought.
With your setup you would lose either 1 & 2 or 3 & 4 in that situation.
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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.

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  #7  
Old 04-02-2012, 11:32 AM
MidniteSpec MidniteSpec is offline
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Hence nearly,,why i hate posting
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80LG Franken - Bags,Trunk
Tkat's , Mike's Blacks
Mac 4-2 drilled tapers, Pods
Wiseco 1179 @ 35K
750FD swap @ 80K miles 7-2-11
Geezer Rect.
Progressive's Front + Back
82 XJ Carbs 127.5 Mains - 55 Pilots
Lockhart Cooler
HD Barnett clutch springs @ 81K (cured slight slip)
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  #8  
Old 04-02-2012, 12:21 PM
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Quote:
Originally Posted by MidniteSpec View Post
Hence nearly,,why i hate posting
Hey bro', no offense intended. Just sayin'
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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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Old 04-02-2012, 01:13 PM
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So im checking coils and fuel vents? What are the fuel vents?
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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
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  #10  
Old 04-02-2012, 01:20 PM
crazy steve crazy steve is offline
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If you lose the 1/2 or 3/4 cylinders, it's a fuel problem. If you lose 1/4 or 2/3, it's an ignition problem, so based on your first post look at the ignition...
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'78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
'82 XJ rebuild project
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'79F parts...
'81H more parts...

Other current bikes:
'93 XL1200 Anniversary Sportster 85RWHP
'86 XL883/1200 Chopper
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  #11  
Old 04-02-2012, 01:28 PM
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Quote:
Originally Posted by airborneXS View Post
So im checking coils and fuel vents? What are the fuel vents?
And the pickup coil wires under the left engine cover..............most likely culprit.
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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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  #12  
Old 04-04-2012, 09:24 AM
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airborneXS airborneXS is offline
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so it keeps happening on and off. ive already got a set of new coils coming, but im starting to think that the gremlin may be in the wiring and not the coils themselves. Is there a way i can check to see if it is the coils? other than simply replacing them that is. Im going to be doing that tomorrow when the new ones come in. if it happens after i replace them then theres a good chance that it is the coils themselves.
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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
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  #13  
Old 04-04-2012, 09:51 AM
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coils.....

http://www.xs11.com/forum/showthread.php?t=583

pickup coils....

http://www.xs11.com/forum/showthread.php?t=543
__________________
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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  #14  
Old 04-04-2012, 10:07 AM
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airborneXS airborneXS is offline
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you are awesome...ill get to work on that...more to follow...
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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
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  #15  
Old 04-04-2012, 11:06 AM
crazy steve crazy steve is offline
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That link: http://www.xs11.com/forum/showthread.php?t=583 .... contains one bit of misinformation...

When checking the secondary side of the coils, that 15K ohms number should be with the spark plug caps removed; with the caps in place, you're looking for 25K ohms +/- 10%. If you don't get that, remove the caps by unscrewing them from the wires, then check between the wire ends for the 15K. Each cap is 5K ohms, and these should be checked seperately. If a cap is bad, these can be replaced; most metric bike shops will have new NGK caps for about $3-5 each. Sometimes by clipping about 1/4" off the end of the wires and reinstalling the caps that will clear up connection problems and bring everything back into spec.
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Fast, Cheap, Reliable... Pick any two

'78E original owner - resto project
'78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
'82 XJ rebuild project
'80SG restified, red SOLD
'79F parts...
'81H more parts...

Other current bikes:
'93 XL1200 Anniversary Sportster 85RWHP
'86 XL883/1200 Chopper
'82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
Cage: '13 Mustang GT/CS with a few 'custom' touches
Yep, can't leave nuthin' alone...
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