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Old 03-12-2009, 11:14 PM   #1
jdsuther OP
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950 Adv - Loss of power after whoops

I got a chance to ride the beast a good deal off road. After encountering a stretch of whoops I began to lose power and teh bike began to missfire and I noticed blue smoke. I came to a stop a the bike stalled and took some time to fire up again. Any thoughts? Someone mentioned it might have something to do with the constant velocity carbs?
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Old 03-12-2009, 11:17 PM   #2
brents347
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CV carbs are probably contributing to the problem, but it osunds as if your float level is too high and the bike is flooding in the bounce of the whoops thus the blue smoke till it clears out.

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Old 03-13-2009, 04:11 AM   #3
camoktm
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Quote:
Originally Posted by brents347
CV carbs are probably contributing to the problem, but it osunds as if your float level is too high and the bike is flooding in the bounce of the whoops thus the blue smoke till it clears out.

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Old 03-13-2009, 07:02 AM   #4
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Quote:
Originally Posted by jdsuther
I got a chance to ride the beast a good deal off road. After encountering a stretch of whoops I began to lose power and teh bike began to missfire and I noticed blue smoke. I came to a stop a the bike stalled and took some time to fire up again. Any thoughts? Someone mentioned it might have something to do with the constant velocity carbs?
Welcome to the club!
It's about the only real bitch I have with this bike.
Well, that and the weird clutch issues.

See Ya!
Chris
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Old 03-13-2009, 10:27 AM   #5
Head2Wind
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Quote:
Originally Posted by jdsuther
I got a chance to ride the beast a good deal off road. After encountering a stretch of whoops I began to lose power and teh bike began to missfire and I noticed blue smoke. I came to a stop a the bike stalled and took some time to fire up again. Any thoughts? Someone mentioned it might have something to do with the constant velocity carbs?
Setting the float height at 3.5mm will help
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Old 03-13-2009, 10:31 AM   #6
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I added a fuel pressure regulator from Mr Gasket of all places. Set at 3.5 on the dial, (who knows what it really is as the pump is supposeed to be about that psi???), my SE hammers whoops without bogging. Went from unrideable to an animal in whoops & continuous rock hits. Olec recommended & it works!
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Old 03-13-2009, 10:38 AM   #7
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Been running 1.5PSI with mine, regulation seems to be a key piece to making this work better.
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Old 03-13-2009, 10:43 AM   #8
SDS
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How about some part #'s or links for these pressure regulators. I've got a 1-4psi Holley, but I haven't mounted it yet. I'd like something a bit smaller, and more conducive to mounting on a motorcycle......i.e, small
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Old 03-13-2009, 11:13 AM   #9
Head2Wind
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I am running the same Holley. Kinda big, but functional. I have been messing with making one, just not enough time in the day.
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Old 03-13-2009, 11:56 AM   #10
reconsmr
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The Holley is #12-804. I have em but not the time to fit yet. The Mr Gasket is the dial type, chromed out for a 55 Chevy but it works so it stays. Spliced right aft of the pump. Summit Racing sells them cheap.
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Old 03-13-2009, 12:41 PM   #11
Gumbydave
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Is the canister removed ?............ if not that'll do it


( I have a Facet and ride lots of woops and hills no sputtering )
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Old 03-13-2009, 01:45 PM   #12
Gumbydave
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if thats not it since you said misfire, suspect faulty ignition circuit, (loose wires, bad keyswitch, metal chips on pickup coil, corroded C.O.P.)
since you said blue smoke, suspect overfilled crankcase, cracked ring (overfilled, stuck check valve, pinched vent)
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Old 03-13-2009, 01:51 PM   #13
reconsmr
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Sounds just like the problem I had, repeated stuttery hits like rock gardens at any speed or sets of whoops. The bike sputters might die, loses throttle connectivity. Hard to restart. Regulator fix it in every circumstance. Harsh hits or long stretches of whoops are not an issue now. I can even dial up the power to double/triple when needed. The bike was near useless pre-regulator in these conditions.
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Old 03-13-2009, 02:33 PM   #14
SDS
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I would really love to see some installation pics of the Holley 12-804 FPR. I've got a couple ideas, but I'd like to see how you guys accomplished the installation.
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Old 03-13-2009, 02:54 PM   #15
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Quote:
Originally Posted by SDS
I would really love to see some installation pics of the Holley 12-804 FPR. I've got a couple ideas, but I'd like to see how you guys accomplished the installation.

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