larswlvs
Member
Posts: 257
my littlest riding partner
Akron,Ohio
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« on: July 08, 2017, 04:30:41 PM » |
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my engine sounds like its warbling or lugging,maybe not firing on all 6 cylinders ,but it seams fine when i increase the throttle and will accelerate just fine .All plugs when tested are firing and plugs look OK gap is .035. carbs are in sync. i have did noting with the valves.also this problem seems to come and go. any idea what could be causing this? thanks in advance
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  If guns kill people where are mine hiding the bodies |
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Valkorado
Member
Posts: 10493
VRCC DS 0242
Gunnison, Colorado (7,703') Here there be twisties.
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« Reply #1 on: July 08, 2017, 04:40:01 PM » |
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Are all six headers hot after warming up the bike?
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Have you ever noticed when you're feeling really good, there's always a pigeon that'll come sh!t on your hood? - John Prine 97 Tourer "Silver Bullet" 01 Interstate "Ruby"  |
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larswlvs
Member
Posts: 257
my littlest riding partner
Akron,Ohio
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« Reply #2 on: July 08, 2017, 05:32:21 PM » |
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i believe so but ill check it out with a digital thermometer
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If guns kill people where are mine hiding the bodies |
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Jess from VA
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« Reply #3 on: July 08, 2017, 05:49:28 PM » |
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Gummy carbs? (slow speed)
Ran any Berryman's/Seafoan/Techron lately? I would. Pure gas is good too.
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Cynic
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« Reply #4 on: July 08, 2017, 05:56:24 PM » |
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Did you check behind the couch? That's where I usually find stuff that I'm missing.  |
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larswlvs
Member
Posts: 257
my littlest riding partner
Akron,Ohio
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« Reply #5 on: July 08, 2017, 06:18:48 PM » |
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i ran straight seafoam in the carbs with a 16 oz test tank and added berrymans B 12 to my gas when i was having mileage problems
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If guns kill people where are mine hiding the bodies |
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larswlvs
Member
Posts: 257
my littlest riding partner
Akron,Ohio
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« Reply #6 on: July 08, 2017, 06:25:42 PM » |
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its more like the engine is studering at low speeds or when cruising but goes away when i accelerate... kits kind of hard to describe but you can actually feel it in the grips
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If guns kill people where are mine hiding the bodies |
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Valkorado
Member
Posts: 10493
VRCC DS 0242
Gunnison, Colorado (7,703') Here there be twisties.
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« Reply #7 on: July 08, 2017, 07:02:25 PM » |
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its more like the engine is studering at low speeds or when cruising but goes away when i accelerate... kits kind of hard to describe but you can actually feel it in the grips
If it goes away around 3000 RPM it could be clogged slow jet. |
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Have you ever noticed when you're feeling really good, there's always a pigeon that'll come sh!t on your hood? - John Prine 97 Tourer "Silver Bullet" 01 Interstate "Ruby" |
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Firefighter
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« Reply #8 on: July 08, 2017, 07:24:39 PM » |
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You said you can feel it in the grips, generally if it feels jerky or quick missing then it will be ignition, like coil ground or fire jumping somewhere. If the miss is slower or just a drop in power it will be fuel related.
Did all the plugs look the same?
Vacuum leaks can cause a stumble. Low battery charge can cause weak ignition or weak alternator can cause ignition trouble at low rpm. Bad grounds can cause engine miss (the ignition grounds to the frame and the frame grounds to the engine by a wire connection, then the engine grounds to the battery by a second wire) had that problem myself, low rpm miss.
Need to figure if its fuel or ignition first!
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2000 Valkyrie Interstate, Black/Red
2006 Honda Sabre 1100
2013 Honda Spirit 750
2002 Honda Rebel 250
1978 Honda 750
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larswlvs
Member
Posts: 257
my littlest riding partner
Akron,Ohio
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« Reply #9 on: July 08, 2017, 10:57:55 PM » |
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i'm going to re-pull the plugs tomorrow and check them out again but the lat time i had them out they looked OK that was about 3 weeks ago. the problem went away for a while and i thought it was fixed but it came back again today. i believe its electrical because my tac takes awhile to go to idle speed when i let off the throttle. yes the carbs are in sync. it starts right up and has a new battery. i do have a dyno 3000 ign box and a Denmark fuel shutoff valve. could it be the needles in the carbs or valves needing adjusted ? I'm stumped!
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If guns kill people where are mine hiding the bodies |
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The emperor has no clothes
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« Reply #10 on: July 09, 2017, 05:34:10 AM » |
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i'm going to re-pull the plugs tomorrow and check them out again but the lat time i had them out they looked OK that was about 3 weeks ago. the problem went away for a while and i thought it was fixed but it came back again today. i believe its electrical because my tac takes awhile to go to idle speed when i let off the throttle. yes the carbs are in sync. it starts right up and has a new battery. i do have a dyno 3000 ign box and a Denmark fuel shutoff valve. could it be the needles in the carbs or valves needing adjusted ? I'm stumped!
If I understand correctly, you say the revs don't go down right away when you let off the throttle ? If so, that sounds like a fuel, vacuum, or linkage issue. Not an electrical issue. |
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Moonshot_1
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« Reply #11 on: July 09, 2017, 08:12:28 PM » |
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I'm with meathead on this one. Specifically the vacuum possibility. These bikes are getting to be in their late teens. The rubber stuff is degrading. Tighten the rubber sleeves around the intakes, replace the vacuum lines. Relatively cheap and easy. If anything, you eliminate that possibility.
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Mike Luken
Cherokee, Ia.
Former Iowa Patriot Guard Ride Captain
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Hooter
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« Reply #12 on: July 10, 2017, 05:12:30 AM » |
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How old are your plugs?
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You are never lost if you don't care where you are!
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