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TGViper
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« on: April 22, 2010, 09:02:34 PM » |
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Hey - new to the forum and the Valk - love the bike but would like to know if the followin is "normal". On decel, is it normal to have burbling (not full fledge back firing) - more like burbling to popping sounds. Comes from both pipes, not just one.
Runs like a scalded dog otherwise and idles fine. Getting 125 to a tank in town.
Thanks in advance,
TGViper
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blackcat
Member
Posts: 138
Nicholas Vore VRCC # 30301
Mounds, Arkansas
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« Reply #1 on: April 22, 2010, 09:40:06 PM » |
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sounds like you need to perform a desmog
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Valker
Member
Posts: 3001
Wahoo!!!!
Texas Panhandle
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« Reply #2 on: April 23, 2010, 05:07:21 AM » |
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When mine did that, it was cracked and split vacuum hoses.
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I ride a motorcycle because nothing transports me as quickly from where I am to who I am.
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TGViper
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« Reply #3 on: April 23, 2010, 06:07:58 AM » |
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When mine did that, it was cracked and split vacuum hoses.
Assume to fix this you pull the tank and replace vacuum hoses to the carbs - correct? As for the Desmog - I'll use the search button to figure that one out. |
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Ricky-D
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« Reply #4 on: April 23, 2010, 06:25:14 AM » |
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Assume to fix this you pull the tank and replace vacuum hoses to the carbs - correct? Nope. It's the hoses that connect to the intake risers. There at the bottom of each is a hose barb. Some are capped and some have hoses. Yes, you have an easier time pulling the gas tank and air box to do this. *** |
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2000_Valkyrie_Interstate
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Lost Valk
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« Reply #5 on: April 23, 2010, 05:00:50 PM » |
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I agree about the vacuum lines. I found a couple of the capped ones most likely to split. You can check those without pulling the tank and very little work. Just look/feel. I forget which cylinders are deadened vs hosed. Anytime i have had the cracking it was at the connections and not just randomly in the hoses. Hope that helps.
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sandy
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« Reply #6 on: April 23, 2010, 06:27:00 PM » |
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This condition is caused by too much air entering the intake/exhaust system. The common causes are vacuum lines dry and cracked: O rings at the base of the intake runners old: exhaust nuts loose (5-7 FT/LBS): hose clamps at carb inlet loose. O rings are a #123 and can be bought at an industrial supply. Get them in Viton or silicone. Vacuum lines are 3.5 mm or a 5/32nd" . I bought Honda's OEM and haven't had any more trouble in 3 years of almost daily use.
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mikeb
Member
Posts: 311
vrcc-29271
dansville mi by lansing mi
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« Reply #7 on: April 23, 2010, 06:36:54 PM » |
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the best place to look and spend some time reading is here http://www.valkyrieriders.com/shoptalk/ |
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i dont care what you ride just ride mike & kari mivrcc capital city leader s.s.d.d.  |
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bigdog99
Member
Posts: 584
1/1/2011 86,000 miles
Kouts Indiana
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« Reply #8 on: April 24, 2010, 09:10:53 AM » |
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i also found that the carbs can be slightly out of sinc and get theat, when i learned to sync my own, it was amazing that the noises smoothed out on de-cel, i get about 200 miles at loewr speeds to a tank, figured i wasnt as rich any more.
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 VRCC#31391 VRCCDS0239 |
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Lost Valk
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« Reply #9 on: April 24, 2010, 10:18:29 AM » |
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I have never synced my carbs in the 6-7 years i have owned mine. I have always meant to get around to learning/doing it. I just hate touching carbs  |
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NITRO
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« Reply #10 on: April 24, 2010, 10:30:00 AM » |
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I had the same problem. Replacing the split lines (one had a huge hole in it) helped a lot. I also had to replace the intake o-rings as two were leaking badly this spring and two others were just beginning to leak. That took care of all the popping.
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When in doubt, ride.
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bigdog99
Member
Posts: 584
1/1/2011 86,000 miles
Kouts Indiana
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« Reply #11 on: April 24, 2010, 12:42:21 PM » |
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I have never synced my carbs in the 6-7 years i have owned mine. I have always meant to get around to learning/doing it. I just hate touching carbs sync really doesnt touch the carbs, but i am with you when it comes to jets, needles, etc. really hope i never have to! though there is enough info on this site i would have to read a lot before i did. but i am confident with the way information is shared here it would be something new to learn,  |
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VRCC#31391 VRCCDS0239 |
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TGViper
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« Reply #12 on: April 24, 2010, 03:50:13 PM » |
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i also found that the carbs can be slightly out of sinc and get theat, when i learned to sync my own, it was amazing that the noises smoothed out on de-cel, i get about 200 miles at loewr speeds to a tank, figured i wasnt as rich any more.
200 miles? Do you have an IS or reg? I got 125 miles just tooling around before going on reserve. Viper |
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bigdog99
Member
Posts: 584
1/1/2011 86,000 miles
Kouts Indiana
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« Reply #13 on: April 24, 2010, 03:56:10 PM » |
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Sorry,
IS
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VRCC#31391 VRCCDS0239 |
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TGViper
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« Reply #14 on: April 24, 2010, 08:07:10 PM » |
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Sorry,
IS
Ahhh - that explains it then. I am thinking about adding the belly tank. |
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Mr.BubblesVRCCDS0008
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« Reply #15 on: April 24, 2010, 09:31:02 PM » |
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Also check the clamps on the airbox to carb and carb to intake running if they are loose popping can result.
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