_Sheffjs_
Member
Posts: 5613
Jerry & Sherry Sheffer
Sarasota FL
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« on: December 08, 2019, 02:13:06 PM » |
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I have a friends V Star 1100 here at my house to help sell, it is an immaculately clean bike with only 11,400 miles on a 2005. Because of a massive heart attack and not able to ride he wants to sell the bike so I detailed the bike and it looks fantastic but it just doesn’t run right. It will always start, it runs, however it seems to miss every so often, I pulled the plugs to change to new, the front plug was black the second cylinder plug looked normal, so isn’t a black plug from running too rich? I have run a tank of fresh gas through with seafoam and no difference I can’t imagine it’s because of the gummed up carburetor if it’s running too rich. Am I wrong here anybody have any thoughts before I rip apart carburetors?
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« Last Edit: December 08, 2019, 02:16:01 PM by _Sheffjs_ »
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98valk
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« Reply #1 on: December 08, 2019, 02:18:21 PM » |
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use service manual and adjust idle mixture screws.
pull plugs do ohm reading on both.
pull plug cables and do same and check for corrosion.
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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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da prez
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« Reply #2 on: December 08, 2019, 04:24:08 PM » |
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If you do not want to really get into it , drain the fuel tank. Put in a double dose of berrymans b-12 with fresh gas. Run the bike for at least 10 minutes. Shut off , turn off fuel petcock, let sit at least 24 hours. Repeat . Then take it out and run it. Keep it in first gear and run the r's up for a while. Then ride it . If it is minor , the B-12 will cure it.
da prez
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Disco
Member
Posts: 4897
Armed Man=Citizen; Unarmed Man=Subject
Republic of Texas
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« Reply #3 on: December 08, 2019, 05:36:42 PM » |
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+1 on the Berryman's.
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2000 Bumblebee "Tourer", 98 Yellow & Cream Tourer, 97 Rescue blower bike 22 CRF450RL, 19 BMW R1250RT 78 CB550K 71 Suzuki MT50 Trailhopper .jpg) VRCC 27,916 IBA 44,783 |
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Jims99
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« Reply #4 on: December 09, 2019, 05:03:09 AM » |
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Which cylinder runs the petcock. Maybe pulling fuel in that way.
I know they run a bigger jet in the front carb, if it had been rejetted for different pipes and stocks put back it will run rich. Also check air filter. The carbs on those are much more precise when any changes to exhaust or intake are made.
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The light at the end of the tunnel, is a train.
99 tourer
00 interstate
97 standard
91 wing
78 trail 70
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3W-lonerider
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« Reply #5 on: December 09, 2019, 01:19:36 PM » |
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Not sure if the vstar is set up the same way. But years ago i had a shadow. That would do that. What i found was the plungers in the carbs for the fuel enrichment circut would corrode. I'd use the choke and after wards the engine would run rich and not have the power it should. Follow the choke cable to the carbs and pull the enrichment plungers out and clean the up. Maybe your problem will disappear.
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_Sheffjs_
Member
Posts: 5613
Jerry & Sherry Sheffer
Sarasota FL
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« Reply #6 on: December 09, 2019, 02:16:50 PM » |
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Not sure if the vstar is set up the same way. But years ago i had a shadow. That would do that. What i found was the plungers in the carbs for the fuel enrichment circut would corrode. I'd use the choke and after wards the engine would run rich and not have the power it should. Follow the choke cable to the carbs and pull the enrichment plungers out and clean the up. Maybe your problem will disappear.
you might be onto something here. And to the others - b-12 in with fresh gas. |
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Ricky-D
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« Reply #7 on: December 09, 2019, 02:28:18 PM » |
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Since the V-Star is a v-twin I imagine it has just a single carburetor.
Am I correct in this assumption?
If I am correct, no amount of carburetor adjustment will affect the problem reported.
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2000_Valkyrie_Interstate
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3W-lonerider
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« Reply #8 on: December 09, 2019, 03:27:18 PM » |
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Since the V-Star is a v-twin I imagine it has just a single carburetor.
Am I correct in this assumption?
If I am correct, no amount of carburetor adjustment will affect the problem reported.
***
the shadow i had was a 700 v-twin. it had 2 carbs. |
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3W-lonerider
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« Reply #9 on: December 09, 2019, 03:29:56 PM » |
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Not sure if the vstar is set up the same way. But years ago i had a shadow. That would do that. What i found was the plungers in the carbs for the fuel enrichment circut would corrode. I'd use the choke and after wards the engine would run rich and not have the power it should. Follow the choke cable to the carbs and pull the enrichment plungers out and clean the up. Maybe your problem will disappear.
you might be onto something here. And to the others - b-12 in with fresh gas. keep in mind. those enrichner plungers are going to be brass. lightly clean them. i used a peice of scothbrite pad. |
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_Sheffjs_
Member
Posts: 5613
Jerry & Sherry Sheffer
Sarasota FL
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« Reply #10 on: December 09, 2019, 05:43:57 PM » |
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Since the V-Star is a v-twin I imagine it has just a single carburetor.
Am I correct in this assumption?
If I am correct, no amount of carburetor adjustment will affect the problem reported.
***
. Has two carbs on the 1100. |
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3W-lonerider
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« Reply #11 on: December 09, 2019, 06:16:19 PM » |
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It would be nice to know the results. Btw. The way mine was set up was the cable ran threw a 90 degree tube then was screwed into the side of the carb. Unscrew the tube and the spring and brass enrichner came out all togather. That end of the cable slid into the brass peice just like the other end slides into the lever.
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_Sheffjs_
Member
Posts: 5613
Jerry & Sherry Sheffer
Sarasota FL
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« Reply #12 on: December 11, 2019, 08:09:37 AM » |
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It would be nice to know the results. Btw. The way mine was set up was the cable ran threw a 90 degree tube then was screwed into the side of the carb. Unscrew the tube and the spring and brass enrichner came out all togather. That end of the cable slid into the brass peice just like the other end slides into the lever.
I will be working on it soon just don't know when - but I will follow up |
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_Sheffjs_
Member
Posts: 5613
Jerry & Sherry Sheffer
Sarasota FL
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« Reply #13 on: December 12, 2019, 02:53:58 PM » |
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Follow up: Well The enrichers are free action and clean. Carbs out and kit is on order.
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3W-lonerider
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« Reply #14 on: December 12, 2019, 05:01:01 PM » |
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ok, i'm sure you'll get it figured out. the description you gave reminded me of how mine acted when the enrichners corroded up and could'nt return to normal with the spring. glad to hear thats not the case. but it would've been an easy fix.
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CajunRider
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« Reply #15 on: December 13, 2019, 06:47:54 PM » |
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I fought a 650 V-Star for quite a while... Smaller engine, but similar carb setup. I ended up replacing the jets with new (jets-r-us.com). I went up one size on the pilots, then drilled the cap so that I could adjust the mixture screw. Mine ran like a champ after that... until the fuel pump died  . The fuel pump was replaced with the same pump the Valkyrie belly tank uses. It lasted at lease until I sold it a year ago (probably still going now). Also, I recommend replacing the float valves & seats... that little screen (or filter) over the valve seat clogs easily and is a pain to clean. |
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