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Crashgordon74
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« on: October 30, 2011, 10:32:06 AM » |
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Haven't been on here for awhile. Anyway here goes...... Went to go on a pre-winterization ride yesterday before changing oil and the bike was running like crap. Wouldn't even idle without the choke until it was completely warmed up. First I thought bad gas even though I had put a half can of SeaFoam in after last ride. However the carbs didn't have SeaFoam in them. Also noticed that the exhaust was much cooler coming out of the right side of bike. I ended up going for a short ride to see if it would clear itself up to no avail. Bike seemed to run fine over 55. Acceleration also seemed to be strong. Got back home and same thing with the exhaust just barely warm from right side. Valk was running perfect when parked and had sat for about a month. Any thoughts on what this might be would be most appreciated.
Crash
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Ricky-D
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« Reply #1 on: October 30, 2011, 10:52:59 AM » |
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Are you using ethanol enriched gasoline?
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2000_Valkyrie_Interstate
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Crashgordon74
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« Reply #2 on: October 30, 2011, 11:05:12 AM » |
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That's the question. The last station I fueled up at was supposed to be ethanol free according to a website that tracks such things. Otherwise the station I use all the time is ethanol free.
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YoungPUP
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« Reply #3 on: October 30, 2011, 12:00:31 PM » |
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stumbling and coughing at lower RPM's? If so look at the slow jets. My9 std did this after winter storage (drained the carbs instead of using stabil) ( Wont make that mistake twice)
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Yea though I ride through the valley of the Shadow of Death I shall fear no evil. For I ride the Baddest Mother F$#^er In that valley!
99 STD (Under construction)
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Ricky-D
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« Reply #4 on: October 30, 2011, 01:41:00 PM » |
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I don't see any adverse reactions to draining the carburetors for storage.
Naturally, insuring that all carburetors are completely drained is the important part.
I think if I were to do that particular thing, I'd leave the screws loose rather than tightening them back up. Yes, doing this would definitely open the possibility of an accident when gassing the bike up again but taping a reminder note to the tank or something like that would take care of that possibility.
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2000_Valkyrie_Interstate
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John U.
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« Reply #5 on: October 30, 2011, 05:52:10 PM » |
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Your problem is certainly the slow jets. Inablilty to run without the choke is the big clue. The choke is really a separate "enricher circuit" that doesn't rely on the slow jets.
The bike runs better at speed because the main jets are still able to pass fuel.
Try a large dose of Techron with half a tank of fresh fuel. Techron is more aggressive. Run the bike till good and warm, then let it sit for a few hours or overnight then run it again. Give the carb cleaner time to work.
If still no go, get some new slow jets from Sudco. You may want to consider 38 slows instead of the stock 35s.
Good luck
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Crashgordon74
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« Reply #6 on: October 30, 2011, 06:01:45 PM » |
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The bike did run without the choke once it was warm. I'm still wondering about the different exhaust temp from side to side. Almost as if a cylinder or two wasn't firing on the right side.
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John U.
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« Reply #7 on: October 30, 2011, 07:59:04 PM » |
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You're right, the cylinders with cold pipes aren't firing. This is an indication of clogged slow jets. At RPMs over 3000 the main jets will be providing the needed fuel but at lower RPMs, the slow jets do the work, if they can.
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Ricky-D
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« Reply #8 on: October 31, 2011, 07:53:49 AM » |
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That symptom doesn't necessarily have to be "slow jet" related. A poorly synchronized carburetor system could also be responsible for that! A recent posting may offer you some support, read #14 especially. this is the thread. |
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2000_Valkyrie_Interstate
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GotValk
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« Reply #9 on: November 01, 2011, 06:04:54 PM » |
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Did you think the gas tank valve could use a rebuild kit?
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Crashgordon74
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« Reply #10 on: November 01, 2011, 07:39:48 PM » |
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Thanks for all the suggestions. In response to the last post, the bike has a Pingel petcock and the Pingel in-line see-thru fuel filter. That's why I can't understand how the slow jets would clog with that much filtration. The carbs have never been synched as the bike only has 15,000 miles on it. Anyway, I'll try the easy stuff first and see how it goes. Thanks. Crash  |
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