Question about 2000 Harley Davidson XL 1200 C Sportster Custom

1 Answer

2005 sportster (1200) need to lean-out air fuel ratio.fuel fouling plugs,with clean air filter element.

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  • jason goddard May 11, 2010

    have you changed any internals int he motor. Have you changed exhaust. May need to have card rejetted. What are you running for a carb?

  • hardan May 11, 2010

    What do you have for airbox and exhaust? What size jets are you running? Has there been any carb work done?

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  • Harley Davidson Master
  • 48,599 Answers

Hi Lance_daddow, take a ride over to your local dealers service department, I'm sure they will be happy to take your Harley Davidson for a test ride if necessary and offer professional advice and assistance concerning your issue. Have a nice day.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Posted on Jun 02, 2015

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Posted on Aug 30, 2009

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1 Answer

2002 Harley Davidson XL 1200 C Sportster running rich


Hi, David and the usual suspects are:
1. Dirty or clogged or over oiled air filter.
2. Choke not seating properly.
3. Float level to high.
If you have changed your engine size, compression ratio, fuel delivery system, air filter size or flow rate, mufflers or exhaust system or a significant change in altitude your carburetors need re-tuning and if your fuel system (gas tank, filters, fuel valve, and carburetor) is contaminated with ethanol sludge, varnish, rust, dirt, water etc. or your bike has been sitting for months or years without running these components must be "PROPERLY" cleaned and reassembled "CORRECTLY" before any adjustments can be made. Tuning your carburetor is fairly simple once you understand the basic principals. You engine is a simple airbox sucking air in and blowing it out, it is finely tuned at the factory for maximum performance once you upset that delicate balance by changing air filters, camshafts or exhaust systems your performance may go down the and the engine may run poorly, you need to compensate the air-fuel mixture in the carburetor in order for the engine to run smoothly and at peak performance. If you are running multi carburetors you need to sync them first and make sure your air cleaner element is clean and dry for paper elements or lightly oiled for foam and meshed elements and properly installed. Here is how and where you compensate trouble: "TIP" if your engine "BOGS" you're not getting enough fuel.
1. Close to 1/8 throttle is managed by the air screw and pilot/slow jet.
2. 1/8 to 1/4 throttle is managed by the air-screw, pilot/slow jet, and throttle slide.
3. 1/4 to 1/2 throttle is managed by the throttle slide and jet needle.
4. 1/2 to 3/4 throttle is managed by the jet needle, needle jet, main jet, and air jet.
5. 3/4 to wide open throttle is managed by the main jet and air jet.
6. A wide open throttle is managed by the main jet.
If you are running lean, spark plug electrode color is white, engine runs hot and feels like it is starving for fuel you need to go up on the jet size or move the c-clip down one notch. If you are running rich, spark plug color is black or dark gray, the engine runs cool, and bogs down when accelerating you need to go down on jet size or move the c-clip up one notch. When your carburetor is properly tuned for maximum performance your spark plug electrode will be a light tan color like coffee with cream. If you prefer fuel economy over performance you can go down on main jet sizes until a satisfactory level of lower performance is acceptable versus MPH, your spark plug color will be whiter and your engine will run warmer. These tuning adjustments will only make improvements if your intake and exhaust system have no air leaks or sealing issues and the entire electrical system is in proper working order and you have no mechanical issues.
For more information about your issue and valuable "FREE" downloads that you will need for viewing and printing please click on the blue links below and for more specific information or questions at no charge please feel free to contact me at xlch@mail.com. Good luck and have a wonderful day.
2000 sportster running rich Harley Davidson Forums
https://www.carlsalter.com/pdfs/Harley%20Davidson%20%20Sportster%201986-2003%20Service%20Manual.pdf
https://www.carlsalter.com/pdfs/Harley%20Davidson%20%20Sportster%201986-2003%20Service%20Manual.pdf
http://partsfinder.onlinemicrofiche.com/ronnies/showmodel.asp?make=hdmc
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May 09, 2018 | 2002 Harley Davidson XL 1200 C Sportster...

1 Answer

I keep fouling plugs on my 2005 vstar 1100 classic tried going a step hotter but they still foul after a very short time? exhaust is open was that way when I bought it


Just a thought. is your air filter clean? A dirty filter will make it burn more fuel and cause the plugs to foul.Is your choke working properly? Both of these will foul plugs and use more fuel.

Aug 16, 2016 | 2005 Yamaha V Star 1100 Classic

1 Answer

Codes too lean, stalls when warm. replaced o2,MAF,filter, plugs and coils


Check for air leaks with a water spray from an old spray bottle. Run the engine and spray around gasket seams and Vacuum lines.

Lean code means too much air, not too little fuel. Engine is dumping fuel to get correct fuel ratio.

Mar 22, 2014 | 2005 Lincoln Aviator

1 Answer

2005 Honda CR 85 R keeps fouling spark plugs


Hi, William and the usual suspects are:
1. The first thing to do if your spark plug has been fouled is to check the air filter. If it's really dirty, that makes it difficult for air to get through to the engine, causing a rich condition. Either clean it thoroughly with some Air Filter Cleaner or buy a new filter. Before you put it back in the air-box, treat with some air filter oil or spray. "WARNING" adding too much oil can also clog up the filter, resulting in another fouled plug.
2. While the gas/oil ratio doesn't equate to what the jetting is, you can still foul plugs, or worse, if the mixture is wrong. Depending on your bike, it's best to look at your owner's manual for the correct ratio. For most 2-stroke motocross bikes, a ratio is 32:1 or 40:1, the gas being 32 or 40, and oil being 1. For those that don't it, it means that for every 128 ounces (one gallon) of gas, you add 4 ounces of 2-stroke oil for a 32:1 ration, or just over 3 ounces for a 40:1 ratio.
If you have too much oil in the mixture (such as 12:1), then you will probably end up fouling the plug because it is more difficult to burn that much oil. Don't try to cut corners with the oil though, because it's very important for your dirt bike's engine. 2-stokes need the oil for lubrication on the cylinder walls, so if you don't have enough (or any for that matter) then the cylinder walls will run dry, causing it to overheat and seize the engine very quickly. So it's very important that you put in the right mixture pre-mix to your 2-stroke gas tank.
Also, 2-strokes have reeds that air and fuel go through into the cylinder, so if they are cracked or broken the bike will not run right. This could cause the plug to foul, so before you go out and buy anything expensive, make sure the reeds are still good.
3. While this usually isn't the main problem, it could be that your spark plug isn't burning hot enough. Having a hotter spark will ignite the fuel stronger, leaving less residual gas/oil in the cylinder that could cause the plug to foul. This "ISN'T" the best choice, but I'd say it's safe to go one plug hotter than stock. Keep an eye on the plug color you're looking for a light tan color anything whiter and you could burn a hole in your piston. Spark plug manufacturers aren't always the same, so make sure you find out how they rate them.
4. Almost every motocross bike comes rich from the factory (especially Honda 2-Strokes when they were being made). It's usually a pretty simple fix, but many riders are too lazy and would rather continue buying plugs instead of spending a few bucks on jets.
5. Piston rings badly worn or broken.
6. Faulty ignition coil low output.
For more information about your question and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
CR85R fouling spark plugs
06 CR85 Fouling plugs
CR80R RB CR85R RB 1995 2007 Workshop Manual Models Download Manuals... $15
http://www.partsfish.com/page/oem-parts-for-honda
Honda CR85 Expert Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Aug 18, 2011 | 2005 Honda CR 85 R

2 Answers

Bike runs great. until it warms up then it backfires and spits and sputters


It sounds like a fuel problem. Next time it starts doing this, take the air filter cover and the air filter off. Leave the air filter backing plate on the engine and go for a ride. If it runs better, the carb is too rich. If it runs worse, the carb is too lean. They are usually jetted very lean from the factory to meet EPA standards.

If the bike is fuel injected, the dealer will have to change that as it's not owner servicable.

If you run it too long with the enricher on when it's cold, it will foul the spark plugs. The enricher is way rich. I usually only run the enricher long enough to get the warm enough to run while holding the throttle open or using the throttle lock. Don't run the enricher any longer than necessary. Put in a new set of plugs that try that. Big Twins are bad about the enricher fouling the plugs, Sportsters are the king of fouled plugs when using the enricher. When you purchase spark plugs, just buy the Autolite 4164 plugs. They run as well as anything out there and don't cost nearly as much.

Good Luck
Steve

Aug 23, 2010 | 2005 Harley Davidson XL 1200 C Sportster...

1 Answer

2005 Kawasaki KX 125 spark plug keeps fouling


Hi, Molokaiboy96 and the usual suspects are:
1. The first thing to do if your spark plug has been fouled is to check the air filter. If it's really dirty, that makes it difficult for air to get through to the engine, causing a rich condition. Either clean it thoroughly with some Air Filter Cleaner or buy a new filter. Before you put it back in the air-box, treat with some air filter oil or spray. "WARNING" adding too much oil can also clog up the filter, resulting in another fouled plug.
2. While the gas/oil ratio doesn't equate to what the jetting is, you can still foul plugs, or worse, if the mixture is wrong. Depending on your bike, it's best to look at your owner's manual for the correct ratio. For most 2-stroke motocross bikes, a ratio is 32:1 or 40:1, the gas being 32 or 40, and oil being 1. For those that don't it, it means that for every 128 ounces (one gallon) of gas, you add 4 ounces of 2-stroke oil for a 32:1 ration, or just over 3 ounces for a 40:1 ratio.
If you have too much oil in the mixture (such as 12:1), then you will probably end up fouling the plug because it is more difficult to burn that much oil. Don't try to cut corners with the oil though, because it's very important for your dirt bike's engine. 2-stokes need the oil for lubrication on the cylinder walls, so if you don't have enough (or any for that matter) then the cylinder walls will run dry, causing it to overheat and seize the engine very quickly. So it's very important that you put in the right mixture pre-mix to your 2-stroke gas tank.
Also, 2-strokes have reeds that air and fuel go through into the cylinder, so if they are cracked or broken the bike will not run right. This could cause the plug to foul, so before you go out and buy anything expensive, make sure the reeds are still good.
3. While this usually isn't the main problem, it could be that your spark plug isn't burning hot enough. Having a hotter spark will ignite the fuel stronger, leaving less residual gas/oil in the cylinder that could cause the plug to foul. This "ISN'T" the best choice, but I'd say it's safe to go one plug hotter than stock. Keep an eye on the plug color you're looking for a light tan color anything whiter and you could burn a hole in your piston. Spark plug manufacturers aren't always the same, so make sure you find out how they rate them.
4. Almost every motocross bike comes rich from the factory (especially Honda 2-Strokes when they were being made). It's usually a pretty simple fix, but many riders are too lazy and would rather continue buying plugs instead of spending a few bucks on jets.
5. Piston rings badly worn or broken.
6. Faulty ignition coil low output.
For more information about your question and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
2003 kx125 fouling plugs
Spark Plugs Keep Fouling
https://www.howtomotorcyclerepair.com/images/Kawasaki-KX-125-KX250-Service-Manual-2003-2004-2005-2006-2007-2008.pdf
OEM Parts for Kawasaki
2005 Kawasaki KX125 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Jul 28, 2010 | 2005 kawasaki KX 125

2 Answers

OBD2 METER READS ENGINE TOO LEAN


Lean running condition A lean running condition means that the air/fuel mixture is unbalanced, and that the engine is getting either too much air, not enough fuel, or a combination of both. Optimally, this ratio should be around 14.7 parts air to 1 part fuel by mass, at low or cruising loads. This ratio is known as stoichiometric for gasoline. Ideally, at WOT, you should aim between 11.5:1 (Rich best torque at WOT) and 13.3:1 (Lean best torque at WOT).
Running lean, like having your spark timing too advanced, creates much more heat during the combustion process. This can lead to piston seizure, a hole in the piston, melted spark plug electrode or other complications due to overheating. You will not be producing peak power, and your exhaust will also emit more oxides of nitrogen, arguably one of the worst byproducts of gasoline combustion for our environment.
Common causes of a lean running condition are an improperly tuned carburetor, clogged fuel line, clogged fuel filter, or a vacuum leak.
Preforming a plug chop is a good way to find out if your engine is running too lean, as you will see a powdery white residue on your spark plug in the presence of a lean condition.
On the other end of the spectrum, richer ratios will also cause lost power, however this will most likely be accompanied by black smoke (around the 9:1 fuel/air ratio area), and fouled spark plugs.

May 30, 2010 | 2002 Saturn VUE

1 Answer

Cannot keep it running, just backfires


fuel system needs cleaning, air filter and exhaust must be in place as well.(clean,no leaks) make sure plug wires are in good condition,and srark plugs are clean

Apr 16, 2010 | 2000 Harley Davidson XL 1200 C Sportster...

1 Answer

2005 1200 sportster bogs when idling


It could be any number of things but I would tend to think that it's something to do with the carburetor. It could be something as simple as it's idled too low. The idle speed should be about a thousand RPMs or so.

Your bike also came from the factory jetted extremely lean. A "jet kit' may help the problem in that it will richen the mixture up just a bit making the transition from the idle circuit to the midrange circuit smoother.

Next, you may have a problem with the accelerator pump on your carb. If the pump is not working correctly. Remove the air filter cover and element so that you can see into the carb. With the engine NOT running, crank the throttle to wide open position while looking into the carb. You should see a stream of fuel being squirted into the carb out of a brass nozzle in the throat of the carb. If you don't see this, you need to have the carb serviced.

Apr 14, 2010 | 2000 Harley Davidson XL 1200 S Sportster...

1 Answer

I have a 03 Harley XL Custom Sportster that has a hard time starting both cold and after 4 or so minutes after sitting. Have aftermarket exhaust, K&N air filter. Has new spark plugs. It also pops in...


You are experiencing a lean condition (to much air vs fuel) due to your exhaust and k & n filter modifications. This means you'll have to re-jet you carb so more fuel is introduced so proper ignition can take place. Running lean will result in detonation and big dollar repairs. If you have fuel injection you will have to purchase a fuel/ignition management module i.e. power commander, sreaming eagle race tuner or the like so you can upload the correct air/fuel mixtures as per your mods.

Apr 02, 2010 | 2000 Harley Davidson XL 1200 C Sportster...

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