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 Post subject: H2 part throttle problem
PostPosted: Sun Sep 10, 2017 11:28 am 
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Joined: Tue Nov 15, 2011 8:55 pm
Posts: 163
Location: Rhode Island
Took the 72 H2 out for the first time in a couple of seasons, drained carbs last time it was ridden, fired up 4 kicks , idles well and pulls great full throttle but feels like it's not running on all 3 cylinders steady throttle until throttle is past 1/4 turn. Has Lakeland all in one unit, K&N pods and early Wirges chambers. Maybe pilots jets gummed up?
TIA

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72 H2, 76 XLCH, 78 KZ1000, 99 ZRX, 04 120ci Fatboy


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PostPosted: Sun Sep 10, 2017 11:29 am 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 8004
Location: North Central NC
That would be my first guess.

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If it surges, that's normal, upshift.


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PostPosted: Sun Sep 10, 2017 11:56 am 
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Joined: Tue Jun 07, 2011 6:37 am
Posts: 9809
Location: Rio Rancho, New Mexico
Clogged pilots usually effect the idle, but always good to check.

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PostPosted: Sun Sep 10, 2017 7:35 pm 
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Joined: Tue Nov 15, 2011 8:55 pm
Posts: 163
Location: Rhode Island
Did some searching around the forum, pulled plugs, left and center seem ok but a little rich, right cylinder darker and wet, RH pipe smoking more heavily than other 2, checked trans fluid level, went from upper mark to lower mark on a 70 mile relatively hard ride. Think I found the problem?

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72 H2, 76 XLCH, 78 KZ1000, 99 ZRX, 04 120ci Fatboy


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PostPosted: Sun Sep 10, 2017 8:02 pm 
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Joined: Wed Jun 08, 2011 11:34 pm
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Location: North Central NC
Sounds likely.

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PostPosted: Mon Sep 11, 2017 4:46 pm 
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Joined: Wed Feb 24, 2016 5:55 am
Posts: 86
Location: Hollister, CA
What's the problem?

A bad seal?


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PostPosted: Mon Sep 11, 2017 5:18 pm 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 8004
Location: North Central NC
The dropping of the transmission oil indicates the right crank seal is leaking. It can be changed without splitting the case halves, but it could mean there are more leaking crank seals, so it's probably a good idea to do a leakdown test on all of them.

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If it surges, that's normal, upshift.


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PostPosted: Sun Sep 24, 2017 4:35 am 
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Joined: Wed Feb 24, 2016 5:55 am
Posts: 86
Location: Hollister, CA
Thanks Jim for that info


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