Question about 2006 Harley Davidson FLHR Road king

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Engine popping,and will not idle. The bike has been sitting for a while. I think it might be old gas has jets in carb. stopped up.How much trouble to take off carb and clean it out? 2004 HARLEY ROADKING FLHR.

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Your FLHR may need to have the carburator cleaned out. The fuel that we are getting now is very unstable and and can gum up very quickly. the idle or slow circuit in the carb is very small and can be pugged up easily. Removeing the carb and cleaning it out is about an hour and a half job to do properly. The fuel in the tank should be drained out and replaced with fresh fuel also. some people will simply siphon the old fuel out of the tank. the carburator is delicate and precision so it should only be repaired by a qualified technician. beware of the " miracle carb cleaners" they often do more damage.

Posted on Jan 02, 2011


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Its starts good and idles good but when i give it any throttle it like it stops getting gas it dies and sounds like it just sucks air im good with cars but never worked on bike i think its the accelerator...

You need to clean the carbs, your pilot jets are clogged, make sure you are thorough about cleaning every jet and all passages when you do this or you will have the same problem

Jun 09, 2011 | Yamaha Road Star Motorcycles

1 Answer

My 2008 ttr 230 has been started in months. i purchsed a new battery and it still would not start.

The battery is only the beginning. The carbs are most likely gummed up. The idle jets are plugged, and the old gasoline in there wouldn't help. Your idle jet, (pilot jet, whichever name you prefer) is plugged up in your carburetors. If the bike was stored improperly, or old/dirty gas was in the tank, these jets get plugged up pretty easily. The idle jet is where your bike pulls gas while it has a closed throttle position. Its the smallest jet in the carbs and makes it hell to start a bike when they are plugged up. Good thing for you, is that you only have one carb, and it is very easy to take out and clean. The jets are under the BOTTOM cover of the carbs. You will see the main jet is on a Taller part of the carb and the idle jet is next to that. Here is a picture to help you, It isn't the exact carb, I borrowed this pic from another website. Number 1 is the pilot jet, 2 is the main jet and 3 is where the fuel comes into the carb. This is your float valve. This has to be clear of stuff too or it won't shut off properly and you will leak gas from the carbs. So get yourself a can of carb cleaner and start spraying!


Nov 17, 2010 | 2002 Yamaha TT-R 225

2 Answers

Will ethanol in 93 octane cause the coughing poping out of the air intake?

Not likely. You probably do have a plugged circuit in the carburetor though. Remove the carb and clean. Pay special attention to the pilot and main jets and circuits. Blow out with carb cleaner and air. If you pull the idle mixture screw, (recommended, also, screw the idle mixture screw inwards counting the turns as you go before removing), be sure to remove the washer and "o" ring with the mixture screw, sometimes they will not come willingly. Clean the carburetor thoroughly, re-install idle mixture screw to number of turns out, (as you counted before removing), re-install carb on bike and test.

Nov 03, 2010 | 2000 Harley Davidson FLHR-FLHRI Road king

1 Answer

Starts but will only keep running while choke is on

Most likely your slow (idle, pilot, whichever name you prefer) jets are plugged up in your carburetors. If the bike was stored improperly, or old/dirty gas was in the tank, these jets get plugged up pretty easily. One if not all are probably affected. The slow jet is where your bike pulls gas while it has a closed throttle position. Its the smallest jet in the carbs. When you twist the throttle, the needle (blocking the main jet from being used) opens up and allows gas to pass it and up into the vacuum of your carb and into your engine. If the idle jets are plugged you will usually notice that if you give the bike throttle it will run great in the higher RPM (3000+) but will die and be "glitchy" or boggy when going from no throttle to open throttle. You can try to cheat a carb clean by getting some carb cleaner and spraying that down the carbs, and using seafoam or equivalent to get those jets clean, but its always a better bet to see whats going on inside and clean those things so you get your throttle response back. Goodluck.


Oct 21, 2010 | 2001 kawasaki ZX-6R Ninja

1 Answer

I think my carb is gummed up or the jets are plugged. whats the best way to clean this without removing the entire carb or is there no easy way

The only way to properly clean is to remove and disassemble. However if you are just a victim of bad gas, a shot of carb cleaner down the fuel line will remove fuel that has gelled in the jet. Know if the clog is more serious, drain the carb bowl, and fuel tank. Pour some Chevron "TECRON" directly into the carb, mix a Shock Treatment ( about a third of cup in one gallon of gas)and put in tank. Start the bike just enough to **** into jets, and let sit overnight.Drain the carb bowls and restart the bike. let it idle or drive it slowly for five minutes. this will usually take care of minor clogs.When bike is idling or running better drive to gas station and fill the tank. Drive the shock treatment through the bike(100 plus miles), this should clean up the entire engine. If the techron does not clean the carbs in 5 to 10 minutes of running time, you will have to take them apart to clean them properly. Use Chevron "Techron" not Chevron "Fuel sytem cleaner with Techron". Techron is more concentrated.

Jul 15, 2010 | 2001 Honda VT 750 CD Shadow A.C.E. Deluxe

2 Answers

Will not idle

Your carbs are dirty and need to be cleaned. A tank of bad gas or old gas can gel up the jets. You buy gas, drive home, and when you get there the bike stops idling. Light gelling can be fixed by draining the carbs (screw on bottom of bowl), pulling the fuel line off the tank, and squirting some motorcycle carburetor cleaner down the fuel line. Plug the fuel line back in turn on the gas and start up the bike. If that doesn't work, using the same procedure buy some Chevron Techron fuels system cleaner, pour directly into the carbs and let sit over night (also drain tank and heavily treat one gallon of gas and put in tank) Fire up bike and let run ,idle, slow drive for 5 to ten minutes. This will usually get cycle idling without disassembling carbs. If it still wont idle you will have to take off the carbs, disassemble and clean blowing through the jets and jet passageways.

May 08, 2010 | 2005 Honda VT 600 C Shadow

1 Answer

Having trouble getting bike to run whenI give it

This is more than likely a carburetor problem. Either your main jet is stopped up or your accellerator pump is not working.

Take the front cover and element out of your air filter so you can see down into the carb. With the engine off, twist the throttle. Watch to see if a stream of fuel squirts into the carb, If you don't see it, your accelerator pump needs to be rebuilt. If you do see the stream of gas, then it sounds like your main jet may be stopped up.

One other cause is that your diaphragm for the slide has a hole in it and not operating. Start the bike with the air filter element out. Rev the bike and watch to see if the slide lifts up. If not, bad diaphragm.

Mar 16, 2010 | 2003 Harley Davidson XL 1200 C Sportster...

1 Answer

Almost like getting no gas

How long has the bike been sitting?? From what your saying i would start with cleaning the carb. as gas sits it will gum up and block you jets. the carb in bike and most bike have 2 jets pilot and main the pilot the is idle jet and is hooked into the air/fuel screw. it is the smallest of the jets that pick up gas. when you have your choke on it lets the gas " bypass the pilot and feeds gas to the motor when you turn it off it is all up to the pilot jet and if it is gummed up your bike will not idle.
Take a look at the microfishe if it looks to much for you i would take it to you local shop
C.C. Motorsports

Feb 21, 2010 | 2005 Yamaha Road Star Silverado

1 Answer

Carb help

I'm new to the site and new to carbs. I bought a bike last week that had been sitting in a barn for a couple years the engine hadn't been running in over a year. I was able to get it running the first day after cleaning out the field mouse home occupying the air filter chamber and swapping the old gas for new gas. The bike ran and idled fine but the left carb (dual carb setup Keihin) poured gas from the tube coming out the bottom. I did some research and found out the floats may be stuck. I went ahead and ordered new floats and float bowl gaskets. I took the carbs apart apart as much as I could, using Berryman parts cleaner to soak all the metal parts I could get off. I put everything back together and put the new floats in yesterday. I started the engine and not only is the gas is still pouring out the bottom of the left carb, but now the bike is idleing very fast. The idle adjustment is backed out completely. When putting the carbs back together, I screwed all the jets back in all the way. I screwed in the Pilot Air screw, the one with the spring, all the way in, then backed it out 1 1/2 turns. Not sure if this has anything to do with the idle. As far as the floats go, does it sound like I need to replace the float valves too? ,The seats on the jets, or the o-rings on the needle valves that the floats control are probably leaking.,,,

Nov 10, 2008 | 2007 HM CRM F490X I

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