dubsider
Member
Posts: 195
Flat6 baby #33034
Dublin GA
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« on: May 30, 2011, 06:33:16 PM » |
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Question was posted on the general board and thought it better placed on the Tech board (as suggested).....
100 horses and a mouse: once I get up to about 35 mph I hear a squeek (or a whistle sound) that is consistent but intermittent coming from low on my left side.. could it be the alternator? When I took the cover off, I could not find anything I could easily get to.. It does not happen on the side stand while revving her. Sometimes is sounds like a squeeky wheel..Sometimes is seems to be wind gust related .. like there is wind blowing through a cover opening... and speaking of cover.. the top pin that holds the alternator cover in place want to pop out.. Any ideas the group can share, I would really appreciated it.. I have been lurking for a while trying to learn what I can and plan to be very active on the board... thanks.
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RonW
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« Reply #1 on: May 30, 2011, 06:41:47 PM » |
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Perhaps, you didn't bolt the alternator cover back on right.....as with many who have preceded you.
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2000 Valkyrie Tourer
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98valk
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« Reply #2 on: May 30, 2011, 06:44:41 PM » |
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if its coming from the front, there is a bar and sleeve covering that connects to both sides of the frame behind the radiator. sometimes they/it gets loose. I believe its the bolt above the crash bar attachment bolt.
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1998 Std/Tourer, 2007 DR200SE, 1981 CB900C 10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp
"Our Constitution was made only for a Moral and Religious people. It is wholly inadequate to the goverment of any other."
John Adams 10/11/1798
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RP#62
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« Reply #3 on: May 30, 2011, 06:46:04 PM » |
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Does it go away when you put some pressure on the clutch lever?
-RP
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Cyclejohn
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« Reply #4 on: May 30, 2011, 06:52:06 PM » |
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Check your rubber hoses for cracks that connect to your air cut-off diaphrams.
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dubsider
Member
Posts: 195
Flat6 baby #33034
Dublin GA
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« Reply #5 on: May 30, 2011, 06:58:15 PM » |
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Does it go away when you put some pressure on the clutch lever?
-RP
The clutch does not seem to effect it.. |
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dubsider
Member
Posts: 195
Flat6 baby #33034
Dublin GA
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« Reply #6 on: May 30, 2011, 07:00:41 PM » |
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Check your rubber hoses for cracks that connect to your air cut-off diaphrams.
is there a link that details this ??  |
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dubsider
Member
Posts: 195
Flat6 baby #33034
Dublin GA
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« Reply #7 on: May 30, 2011, 07:05:38 PM » |
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Perhaps, you didn't bolt the alternator cover back on right.....as with many who have preceded you.
one bolt on the bottom and a pin that snaps through a grommet... what am I missing? |
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TGViper
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« Reply #8 on: May 30, 2011, 07:22:55 PM » |
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Perhaps, you didn't bolt the alternator cover back on right.....as with many who have preceded you.
one bolt on the bottom and a pin that snaps through a grommet... what am I missing? Doesn't this sound like wind noise? One of the earlier posts said it get's worse with wind gust? Also, do you have fork deflectors? |
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Cyclejohn
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« Reply #9 on: May 30, 2011, 07:31:38 PM » |
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is there a link that details this ?? I tried the search feature but couldn't find anything. If you will look on the side of all 6 carbs there is a short piece of rubber hose that connects the air cut-off diaphram with the vacuum source (they are maybe 3-4-5" long I don't remember off-hand). If one of those hoses has cracked it will pull air through the crack and squeak, squeal, or whistle whenever the piston for that cylinder is pulling air through that carb (sometimes it will seem constant or in synch and sometimes it will seem to be intermittent just according to engine temp and it's affect on the rubber hose). |
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dubsider
Member
Posts: 195
Flat6 baby #33034
Dublin GA
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« Reply #10 on: May 30, 2011, 07:45:36 PM » |
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Perhaps, you didn't bolt the alternator cover back on right.....as with many who have preceded you.
one bolt on the bottom and a pin that snaps through a grommet... what am I missing? Doesn't this sound like wind noise? One of the earlier posts said it get's worse with wind gust? Also, do you have fork deflectors? no wind deflectors... |
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dubsider
Member
Posts: 195
Flat6 baby #33034
Dublin GA
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« Reply #11 on: May 30, 2011, 07:47:47 PM » |
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is there a link that details this ?? I tried the search feature but couldn't find anything. If you will look on the side of all 6 carbs there is a short piece of rubber hose that connects the air cut-off diaphram with the vacuum source (they are maybe 3-4-5" long I don't remember off-hand). If one of those hoses has cracked it will pull air through the crack and squeak, squeal, or whistle whenever the piston for that cylinder is pulling air through that carb (sometimes it will seem constant or in synch and sometimes it will seem to be intermittent just according to engine temp and it's affect on the rubber hose). Is it best to pull the tank off to get to the hoses? Also -- it does not make the noise when in neutral on the sidestand revving to 3000 RPM.. but does make the noise out on the road.. wouldn't the vacuum hoses be an issue in both circumstances ?? |
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« Last Edit: May 30, 2011, 07:51:49 PM by dubsider »
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Cyclejohn
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« Reply #12 on: May 31, 2011, 04:42:08 AM » |
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Is it best to pull the tank off to get to the hoses?
Also -- it does not make the noise when in neutral on the sidestand revving to 3000 RPM.. but does make the noise out on the road.. wouldn't the vacuum hoses be an issue in both circumstances ??
The only thing you have to pull off to get to the rubber vacuum lines is the chrome choke slide covers on both sides. On the right side bank of carbs the rubber hose will be on the rear of the carb and on the left side bank of carbs it will be on the front of the carbs (it's just a short piece of rubber hose, maybe 3" in length). I'm sure your right that this is probably not where the noise is coming from at all but if you reach a point where you've checked all the bolts and still can't resolve the issue it would definitely be worth a check. Sometimes vacuum leaks that aren't readily detectable in a static condition (say, in neutral sitting in your driveway) will show up when the engine is under load going down the road especially with the added current of wind flowing over the hoses. |
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Ricky-D
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« Reply #13 on: May 31, 2011, 08:06:56 AM » |
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Let me ask the obvious question:
Have you desmogged the motor?
***
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2000_Valkyrie_Interstate
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dubsider
Member
Posts: 195
Flat6 baby #33034
Dublin GA
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« Reply #14 on: May 31, 2011, 09:20:26 AM » |
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Let me ask the obvious question:
Have you desmogged the motor?
***
Nope -- I just got her -- she is very stock 2001 Standard with 31,000. all the visible rubber seems good. |
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fast black
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« Reply #15 on: May 31, 2011, 09:47:42 AM » |
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vacuum leak, that's what I would look for
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valkyriemc
Member
Posts: 392
2000 blu/slvr Interstate, 2018 Ultra Limited
NE Florida
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« Reply #16 on: May 31, 2011, 10:22:59 AM » |
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When I found a vacuum leak years ago it was on the underside of a hose along a seam, and it was small, _real small.
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Veteran USN '70-'76
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dubsider
Member
Posts: 195
Flat6 baby #33034
Dublin GA
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« Reply #17 on: May 31, 2011, 01:28:14 PM » |
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When I found a vacuum leak years ago it was on the underside of a hose along a seam, and it was small, _real small.
so how do I actually find a vacuum leak.. I assume it sucks the air in? |
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RonW
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« Reply #18 on: May 31, 2011, 01:54:06 PM » |
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Perhaps, you didn't bolt the alternator cover back on right.....as with many who have preceded you.
one bolt on the bottom and a pin that snaps through a grommet... what am I missing? I forget what it was already, but it might have been something to do with the tab that has to line up with a groove on the inside surface of the alternator cover. The tab has a rubber cushion on it. **whoops, just read your separate thread on alternator covers. ** |
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« Last Edit: May 31, 2011, 02:18:23 PM by RONW »
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2000 Valkyrie Tourer
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John U.
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« Reply #19 on: May 31, 2011, 03:36:08 PM » |
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Since the bike is new to you, do you know what maintenance has been done and when. Like has the air filter been replaced?
If not you should at least check the condition of the air filter which does mean removing the tank. At that point you may want to dig deeper and do a desmog, which removes most of the vacume lines. You will need to replace vacume caps (where the lines used to be) and the line to the petcock. Voila, no more potential for vacume leaks, for now.
Although it's the wrong time of year for all this, clean the tank while it's off.
Take a look in the Shop Talk section re. lubing the final drive splines. They are prone to being overlooked by shop mechanics and are expensive to replace if not kept lubed.
If the brake and clutch fluid looks like tea, it needs to be bled.
Before you do any of this get some MARINE Stabil and treat the gas. You will need to burn most of it so the tank is almost empty anyway. That will get the Stabil into the carbs and prevent the slow jets from clogging while the maintenace is being done.
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dubsider
Member
Posts: 195
Flat6 baby #33034
Dublin GA
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« Reply #20 on: May 31, 2011, 04:46:04 PM » |
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Since the bike is new to you, do you know what maintenance has been done and when. Like has the air filter been replaced?
If not you should at least check the condition of the air filter which does mean removing the tank. At that point you may want to dig deeper and do a desmog, which removes most of the vacume lines. You will need to replace vacume caps (where the lines used to be) and the line to the petcock. Voila, no more potential for vacume leaks, for now.
Although it's the wrong time of year for all this, clean the tank while it's off.
Take a look in the Shop Talk section re. lubing the final drive splines. They are prone to being overlooked by shop mechanics and are expensive to replace if not kept lubed.
If the brake and clutch fluid looks like tea, it needs to be bled.
Before you do any of this get some MARINE Stabil and treat the gas. You will need to burn most of it so the tank is almost empty anyway. That will get the Stabil into the carbs and prevent the slow jets from clogging while the maintenace is being done.
I am not sure of the maintenance of the previous owner.. I actually bought her from a buyer and seller specializing in Valks.. He claimed to be in the bike business for many years (he actually had three others in his garage for make ready).. He sells them on Craigslist and ebay and is in Atlanta. I do need to change the fluids and air filter to get on my maintenance schedule. The bike runs strong.. I may wait on the desmog business as I am not that sure of my skills.. I have already run two tanks of Startron. I will get after the splines when I change the rear tire in a month or three.. she currently is running Avons and they feel really good. I ran Metzes on my Sabre... |
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Jess Tolbirt
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« Reply #21 on: May 31, 2011, 04:58:34 PM » |
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If its an interstate stuff a rag in the faring vent,,,
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dubsider
Member
Posts: 195
Flat6 baby #33034
Dublin GA
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« Reply #22 on: May 31, 2011, 05:22:34 PM » |
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If its an interstate stuff a rag in the faring vent,,,
Nope 2001 Standard... Maybe ..... just maybe .... now that I figured out something so low tech as to get my alternator cover on properly... maybe the whistle, squeak may be solved too. Maybe. |
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Quicksilver
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« Reply #23 on: May 31, 2011, 05:41:30 PM » |
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Noticed a squeak in the mounting for my Batwing, perhaps a loose clamp or bolt in windshield etc.
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1997 Standard   |
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dubsider
Member
Posts: 195
Flat6 baby #33034
Dublin GA
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« Reply #24 on: July 04, 2011, 12:52:27 PM » |
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I took the windshield off... and the mouse disappeared...
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PAVALKER
Member
Posts: 4435
Retired Navy 22YOS, 2014 Valkyrie , VRCC# 27213
Pittsburgh, Pa
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« Reply #25 on: July 04, 2011, 08:19:23 PM » |
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I took the windshield off... and the mouse disappeared...
Did you have a vent in that windshield or was it a "mounting squeak" of some kind? |
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John  |
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olddog1946
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« Reply #26 on: July 04, 2011, 09:10:35 PM » |
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I've developed a squeak from my heel-toe shifter that sounds just like what your talking about, the bolt and the pivot bushing are worn enough to allow me to hear the squeak over the cobra's.,,,, so, if you have a heel-toe set up check it out..
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« Last Edit: July 04, 2011, 09:54:41 PM by olddog1946 »
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VRCC # 32473
US AIR FORCE E7, Retired 1965-1988
01 Valk Std.
02 BMW k1200LTE
65 Chevelle coupe, 1986 Mazda RX-7 with 350/5spd, 1983 Mazda RX-7 with FOMOCO 302/AOD project, 95 Mustang GT Convertible 5.0, 5 spd
Moses Lake, Wa. 509-760-6382 if you need help
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dubsider
Member
Posts: 195
Flat6 baby #33034
Dublin GA
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« Reply #27 on: July 05, 2011, 04:39:38 AM » |
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I took the windshield off... and the mouse disappeared...
Nope on the vent.. It is a 22" Memphis Fats.. which I hate. I think it is the fit against the bike that creates the whistling sound. I am planning to change the plastic to a 17"er. on the 22, I have to look through it and have never liked that. In the rain or night riding, it becomes intolerable (at least for me). |
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