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blacktrain
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« on: August 20, 2018, 09:33:40 AM » |
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hi, trying to get this bike back to life, sitting a long time , cleaned carbs and lots of other work , bike fires rite up cylinders 3 and 4 dead ,if i spray carb cleaner into vac ports on intake tube they will come back . could this be a carb sync issue ,1997 valk 1500 thanks ,i have had these carbs off like 5 times cant think anything is blocked , did notice the chrome intake tubes on left bank get hotter than right side after running 10 minutes dont get that either?? help thx
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Pete
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« Reply #1 on: August 20, 2018, 10:01:42 AM » |
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Have you checked spark?
If not do so as 3/4 are a common to 1 coil.
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Chrisj CMA
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« Reply #2 on: August 20, 2018, 10:04:59 AM » |
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Most likely still a carb issue. Clean looking is not always clean enough. If a jet or vent is still clogged you get what you got
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blacktrain
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« Reply #3 on: August 20, 2018, 11:25:01 AM » |
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Have you checked spark?
If not do so as 3/4 are a common to 1 coil.
hi, yes when i pull the plug wires you can hear it jumping, also i bought a set of used coils and wires and installed them , the tach guage is missing with that cause any of this.thx |
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blacktrain
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« Reply #4 on: August 20, 2018, 11:32:53 AM » |
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Most likely still a carb issue. Clean looking is not always clean enough. If a jet or vent is still clogged you get what you got
i think its a carb issue also, i would like to get a know good set and bolt them on ,i put new pilot jets and float needles . tired of taking them on and off but i think mabey i will just mess with the two that are not working and leave the rest alone,see what happens.thx |
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Pete
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« Reply #5 on: August 20, 2018, 11:40:05 AM » |
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Make sure that the idle passage and needle is clean and flows fluid on 3 and 4.
Also did you replace the o-rings on the idle needles? If not do so.
That should make it idle.
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rugguy
Member
Posts: 245
2000 Valk I/S
Atlanta, GA
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« Reply #6 on: August 20, 2018, 04:14:16 PM » |
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Did you disconnect the coil pack that provides spark to four of the cylinders? It's the one that is attached to the left side motor mount. If so you may have have two of connections switched. That would cause two cylinders to miss even if you show spark from all plugs.
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I hate sand....sand SUCKS!
I wear a helmet....."I'd rather have brains in my head than wind in my hair"
1999 Valk I/S
2000 Valk I/S
2001 BMW K1200 LTE (sold)
2002 FLHRSEI (for sale)
2006 FLHCTUI (sold)
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gordonv
Member
Posts: 5760
VRCC # 31419
Richmond BC
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« Reply #7 on: August 20, 2018, 06:40:08 PM » |
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Have you verified fuel in those 2 cylinders? I'm thinking the drain port on the bow, open it up and see fuel flow out. Run the bike with the enricher on fully (do you know how to do that?), so the cylinders flood, turn off, remove plug and inspect for wetness.
At what point are the cylinders dead, how do you know they aren't working?
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1999 Black with custom paint IS   |
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blacktrain
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« Reply #8 on: August 20, 2018, 07:14:27 PM » |
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Have you verified fuel in those 2 cylinders? I'm thinking the drain port on the bow, open it up and see fuel flow out. Run the bike with the enricher on fully (do you know how to do that?), so the cylinders flood, turn off, remove plug and inspect for wetness.
At what point are the cylinders dead, how do you know they aren't working?
gordanv, at idle i can remove plug wires at plug and no change in engine,carb cleaner in the intake port and they kick in . i will check for fuel in bowl at drain didnt think of that ,thx also if i put choke on it dose get better |
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9Ball
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« Reply #9 on: August 21, 2018, 05:14:08 AM » |
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What are the pilots set at...how many turns out? Sounds to me like slow jet or pilot jet problems. Did you install new o-rings on the pilots? Are they reassembled correctly, spring, washer, o-ring? Make sure the old o-rings are not stuck in the carb body. Try the easy stuff first.
Did you clean the jets or replace with new? Having gone through multiple carb removals the first time I cleaned mine, I now only install new jets...small price to pay for me.
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VRCC #6897, Joined May, 2000
1999 Standard
2007 Rocket 3
2005 VTX 1300S
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Ricky-D
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« Reply #10 on: August 21, 2018, 06:46:17 AM » |
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gordanv, at idle i can remove plug wires at plug and no change in engine,carb cleaner in the intake port and they kick in . i will check for fuel in bowl at drain didnt think of that ,thx also if i put choke on it dose get better
To me, it seems that would indicate the carburetors are not in sync. *** |
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2000_Valkyrie_Interstate
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blacktrain
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« Reply #11 on: August 30, 2018, 05:20:17 PM » |
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just bought a complete rebuild kit for all carbs, hope this fixes it . the book says 1 3/4 on pilot screw ,
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blacktrain
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« Reply #12 on: September 08, 2018, 01:40:07 PM » |
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did a complete rebuild on carbs , ran good . took it to local dealer 'honda' they sync and adjusted the pilot screws . at last it runs good . thanks for all input . going cruisin
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Forge
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« Reply #13 on: September 09, 2018, 05:41:49 AM » |
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Glad you got it sorted out. Now ride the heck out of her and keep on smiling!
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9Ball
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« Reply #14 on: September 09, 2018, 12:18:16 PM » |
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Rather than start a new post it is better to update the original thread. This helps others when they are researching solutions to a similar problem. Here’s a reference to the original post so that your original problem and the final fix are easier to find. http://www.valkyrieforum.com/bbs/index.php/topic,102774.0.htmlThanks for the update |
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« Last Edit: September 09, 2018, 12:21:09 PM by 9Ball »
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VRCC #6897, Joined May, 2000
1999 Standard
2007 Rocket 3
2005 VTX 1300S
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