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Recently my old battle ship started jumping g and bogging at about 5000rpm. I'm running 145 mains jets, Mac 4-2 exhaust, and pod air filters. I checked the pick up wires and thier solid and just replaced the fuel filters and lines. Any ideas guys? Speed limit is 80 here in Montana and that's too close for me to think I'm running lean. Love this old bike and do NOT want to F it up. Any advice is good advice. Thanks again guys!
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79 XS11 F -
Pull the mufflers off that Mac system and see if that makes it better. I had to build some custom baffles for mine to get it to work right.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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Recently my old battle ship started jumping g and bogging at about 5000rpm
what changed ?Seamus Ó hUrmholtaigh
Niimi Moozhwaagan
NOTICE: No trees were destroyed in the sending of this message. We do concede, however, that a significant number of electrons may have been inconvenienced.
Any connection between your reality and mine is purely coincidental.
Member of "FOXS-11" (Former Owner of XS-11)
and SOXS
2008 Nomad "Deja Buick'Comment
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That's what I said after 6 years of mine running fine. I always had a little stumble at WOT about 5K but about a year and a half ago things started getting way worse. I couldn't even use full throttle and it would start bogging and bucking for no apparent reason.Originally posted by hamjam View Post
Turned out the Mac turnout baffles all of a sudden were too restrictive.
Still haven't figured that out. The only thing that makes a lick of sense is the gasoline formula changed.
I dunno.
Ended up buying a Mac flare tip system with removable baffles and building my own straight through baffle. Runs GREAT now.
My threads on the subject.....
http://www.xs11.com/forum/showthread...ght=power+loss
http://www.xs11.com/forum/showthread...ght=power+lossGreg
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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Try the fuel taps set on prime, maybe a crack in a vac hose not letting the tap valve to stay fully open, causing fuel starvation. JAT2H7 (79) owned since '89
3H3 owned since '06
"If it ain't broke, modify it"
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Good idea
Good thought bikerphil. Thanks to that I have now discovered that my petcocks are frozen open....THEY PUKE FUEL.....no leaks though,lol. No change still bucks n jumps. A while ago I was rocked by the impulse to "rinse" the muffler's out, heard that the baffles plug up so I'm going to look at those. For now I'll take the back roads and keep her off the interstate.79 XS11 FComment
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Tried that, didn't work......Originally posted by rangerguy302 View PostGreg
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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When was the last time you checked/adjusted your cam chain tensioner? I had a similar problem on my G, found out the exhaust cam had jumped 2 teeth, couldn't get the rpms last 5500
Just my two cents...80 GComment
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so no kinks in te fuel lines and they are clean seafoamed a tank of gas ?
new plugs and a chop test at 5000 rpm shows ?? did you try 1/2 choke? at 5000 rpm make a difference ? yeah yeah ..but its easier to type than mixture enriching lever
change the needles to richer for a run see if that helps or maybe you need summer air in the blinker fluid reservoir :-DLast edited by hamjam; 08-23-2016, 05:45 PM.Seamus Ó hUrmholtaigh
Niimi Moozhwaagan
NOTICE: No trees were destroyed in the sending of this message. We do concede, however, that a significant number of electrons may have been inconvenienced.
Any connection between your reality and mine is purely coincidental.
Member of "FOXS-11" (Former Owner of XS-11)
and SOXS
2008 Nomad "Deja Buick'Comment
Comment