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MarkT Exhaust
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Author Topic: #1 cylinder  (Read 699 times)
Ecmech
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Posts: 50


Indy


« on: July 22, 2014, 04:26:45 PM »

After ordering all new vacuum lines, I decided to check all my plugs, I just replaced them in the spring with original OEM. All were good except for number 1 cylinder, the plug was wet and pretty black, I replaced that plug, did a spark check, which was good. I ran with the new plug, which it seemed to run better, checked the plug again and it seems to be wet again. Is it most likely a carb issue or should I check the compression in that cylinder?? Thanks
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gordonv
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VRCC # 31419

Richmond BC


« Reply #1 on: July 22, 2014, 05:37:34 PM »

I am not too up on carbs, but if my plug is wet, then there must be too much fuel.

How can there be too much fuel? If all things are the same from carb-to-carb, then there must be more fuel going into that one cylinder. Which would me that the fuel is not shutting off.

I would suspect you are in line for a hydro look. I would not leave this alone for very long, and look further.

Hopefully others will be able to confirm or not, and help you only further to discovery.
« Last Edit: July 22, 2014, 05:39:19 PM by gordonv » Logged

1999 Black with custom paint IS

3W-lonerider
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Shippensburg Pa


« Reply #2 on: July 22, 2014, 06:10:30 PM »

if the float in number 1 is sticking open. the excess fuel runs right down the intake into the cyl.
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Crackerborn
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SE Wisconsin


« Reply #3 on: July 23, 2014, 07:05:49 AM »

+1 on the sticking float since you said you have spark. A pilot screw that is not set properly can also cause the Girl to run rich at lower (below 3k) rpm. Open the bowl drain and see how ugly the gas looks. You can try a cleaner in the fuel, but my experience has been a R&R is in order with new soft parts. The bowl cover can be dropped while the carbs are still on the bike if for a "quick fix" of spray cleaner or a jet change. It is probably possible to remove the float assembly while the carb bank is on the Girl, but the language used for the reassembly might frighten children, pets and definitely offend the spousal unit. Too many small parts in an awkward working position for my fat hands to even attempt.
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Life is about the ride, not the destination.
97 Valkyrie Tour
99 Valkyrie Interstate
Ricky-D
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South Carolina midlands


« Reply #4 on: July 23, 2014, 07:19:52 AM »

There are a number of published articles regarding the process of checking the spark plugs.

To simply remove a plug and look at it, and conclude there is a problem is folly.

With a sticky float in one carburetor, there will definitely be a noticeable affect with

the running of the engine. A sticky float can be the precursor of a hydrolock event.

A compression test should be considered.

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2000_Valkyrie_Interstate
Ecmech
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« Reply #5 on: July 23, 2014, 03:44:41 PM »

Thanks for the input on my carb issue!! Going to fix several other issues as well, the spouse is out of town Smiley
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