Question about 1986 Honda VT 1100 C

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86 honda vt1100 Carburetor problem

My carb just starded to rev up .And i could get it to idle down .check for vacuum leak and found none.took car off could find nothing wrong .any help.Was running good

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  • BOBBY HAMILTON Feb 22, 2009

    Did not help; But i put another carb on it and now it is running find;Don't no what happen to that carb ; But Thanks anyway


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Look behind the carbs if you see a little wheel abought the size of a 25 cent piece turn it to the left or right till the idle comes down or it might be your hi idle lever near your choke valve fust lift it up or down gently bike must be running to do these test let it run for a min or 2 then do it

Posted on Feb 21, 2009

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Misfires at high revs

Hi, Chris and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Spark plugs in bad condition or partially fouled.
4. Spark plug cables in bad condition and leaking.
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
8. Faulty CKP or CMP, MAP, ETS, ATS, TPS, O2 sensor.
9. Intake air leak.
10. Water, dirt, or rust in the fuel system, carburetor and/or filter.
11. Fuel tank vent system plugged or carburetor vent line closed off.
12. Vacuum line from intake manifold to fuel valve is broken, cracked, pinched, or missing.
13. Carburetor controls misadjusted.
14. Damaged carburetor.
15. Incorrect valve timing.
16. Weak or broken valve springs.
17. Damaged intake or exhaust valve.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below Good luck and have nice a day.
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I have a 1985 Honda spree scooter it starts fine idles fine but when I pull the struggle and won't move there's no power... any idea what I should look at

Sounds like a clogged main jet in carburetor, requires dissassembly and cleaning; or water in carb: drain carb at drain screw located on bottom of carburetor; or due to age you have an air leak caused by rotten rubber parts ie; vacuum hoses, rubber carb mounting boot etc... You can spray around these areas with aerasol carb cleaner while idling to locate the leak. engine will die when leak is found.

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2 Answers

Engine Rev goes too high on Starting the engine

It sounds like you installed a new carburetor and the problem remains. You may have a vacuum leak between the carb and the engine allowing in too much air and causing a lean fuel/air condition leading to high revs. Check your vacuum lines for cracks, check your carb holder for cracks or gaps, listen closely for an air leak. Replace any cracked lines or carb holder with new, or a temporary fix may be done by sealing the carb holder with a silicone adhesive to stop the leak.

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1 Answer

Got a yamaha rt 180,can get it to idle,but then wont rev up complete,or can get it to rev up complete,but wont idle then

Check your jets to make sure nothing is damaged. What type of carburetor? Slide, CV (Slide and butterfly), or Fixed Venturi (Butterfly only) Carburetor? If its a CV check the diaphragm. Also look at your throttle cable routing and make sure it isn't getting caught on anything or routed so tightly the cable can't maneuver through the sheath. If none of that works your fuel mixture screw/idle adjusters all all out of whack and it will need to be adjusted. Cheers!

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1 Answer

Engine revs

sounds like air getting into carb where it shouldn't, i.e. vacuum pipe from carb to tank or between carb and engine

Mar 18, 2013 | 2007 Honda CRF 150 F

1 Answer

I just purchased an 86 suzuki gs550l.Will not stay idleing after the choke is open.Even after it is warmed up. I thoroughly cleaned the carbs,checked for air leaks around intakes,cleaned and tested the...

I did a Suzuki 550 carburetor over haul 10 years ago and had 3 of the 4 intake manifolds crack or separate. I would start by closely inspecting the manifolds. Have you tried draining a carburetor bowl to see if it is full of gas? If the vacuum line to the fuel petcock is not hooked up correctly you could just have fuel starvation. You can hold a spark plug to a cylinder head and turn the motor over to see if you have spark. Correct amount of fuel, correct amount of air, and spark is what you need.
I just gave that answer to some one else. The fact is I had to remove and clean my carbs 4 times . Each time I did it, I got one more carb to idle. The last carb to work for me was the vacuum nipple carb. By the time I was done I had to replace all four manifolds they had all separated or cracked. To get my carburetors working I turned them upside down and shot through them with carburetor cleaner in the morning before work and in the evening after work. The reason it wont idle is the carburetor passageways are still plugged in the slow circuit. Carburetor cleaner , air pressure, and in my case time to get the blockage out of the bodies. When I was done it ran great.

Sep 21, 2010 | 1980 Suzuki Gs 550 L

2 Answers

I hve 1985 inercertor 500 can the carb crack rubber boot cas the eng to rev up and down

YES!! replace any line/manifold tubes that has a crack or leaks and if you want proof... take a can of carburetor cleaner (i prefer Chemtool B-12) and spray it over the suspected lines, while running of course, at idle and watch the rpms increase..then you will have found a loose or cracked hose or fitting!
Can i get a rating for this,

Aug 18, 2010 | 1984 Honda VF 500 F

1 Answer

What octane gas is best for my 1991 Goldwing? When idling my goldwing engine revs up and down. Would a higher octane gas stop this?

Your problem is not octane related. It sounds like you have a vacuum leak, probably a hose. Check out this web site for info on how to diagnose your problem.

Mar 08, 2009 | 1991 Honda GL 1500 Aspencade Gold Wing

1 Answer


Hi and welcome to FixYa,

Two possible reasons:
  • faulty throttle cable. There should be a spring like feel when throttling/revving the bike. If none, then either the cable is broken or the lock has been dislodged from its hooking point between the carbs;
  • vacuum leak. Another indication of a vacuum leak is relatively high idling RPM even when the choke is in normal position. Vacuum leaks could be caused by a cracked rubber connector from the carbs to the intake port, a loose/crack vacuum line or missing carb balancer rubber cap/cross-over.
Good luck and thank you for using FixYa.

Feb 22, 2009 | 1998 Suzuki GSX-R 750 W

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