Question about 2000 Harley Davidson XL 1200 C Sportster Custom

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2005 sportster rotates but no start

Had to extend wiring due to new handle bars, went to start the bike but not enough spark getting to plugs ( back plug has very weak spark whil ethe front has none ) could the coil be faulty or is there a wire from the run or kill switch not connected properly that I missed?.

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  • Contributor
  • 30 Answers

Probably pinched wires under the controls or you skinned the insulation off of a wire while pulling them through the bars.

Posted on Oct 10, 2013

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Posted on Jan 02, 2017

rselvy
  • 83 Answers

SOURCE: Rear cylinder not firing

The first thing I would do is replace the spark plugs again. You can foul a plug and it will cause you more problems than you can ever imagine. I see you have done all the logical things that I would recommend but I did not see you have replaced the plugs after the 200 miles. You would be surprised at how many times a $2.00 part can cause fits beyond belief.

Posted on Dec 08, 2008

  • 29 Answers

SOURCE: When bike gets worm it runs like ****

Since you have thrown the entire ignition system at it, let's think about fuel. If you were running out of gas it would act as you described. I would start by removing the float bowl. Be careful not to spill any gas because we want to look at the level. It should be over half full. Check the float movement. You should be able to push it up without resistance. Looking from the bottom remove the phillips screw that retains the float axle and the float and needle valve should fall out. If the needle valve has three sides or if the rubber tip is worn, replace it. The 3 sided valves have a tendancy to stick closed and all dealer stock should be the 4 sided version by now. After you re-install the float, leave the bowl off and follow the small vacuum hose from the petcock to the carb. Pull it off at the carb end. Look to make sure it isn't damaged. **** lightly (sorry) or use a vacuum pump on the hose. With the petcock on and gas in the tank, a healthy stream of fuel should pour from the needle valve. If not, the petcock diapragm is shot. If none of this helps, take it for a ride and when it acts up, crack the fuel cap loose and if it takes off the vent in the cap is malfunctioning.

Posted on Jan 05, 2009

  • 99 Answers

SOURCE: not getting spark all the time

I think the only problem you have is a loose or corroded connection somewhere. Check your module plug connectors for corrosion (green junk). Check wires to coil, kill switch and other connections for loose or frayed wires or connectors.I doubt that you have a bad electrical component since it starts sometimes but it is possible. Let us know what you find.






Posted on Mar 20, 2009

  • 5 Answers

SOURCE: Backfire when I get off the throttle and down shifting

no your totally wrong the backfire is bcause if u juice the throttle there is excess fule in the cylinders witch give it no where to go so it ignights and creates a backfire witch is not necessarly bad.

Posted on Sep 15, 2009

  • 8404 Answers

SOURCE: what causes plark plugs to foul,they keep turning

Plugs foul for a couple reasons, engine in poor condition (worn rings - poor compression), wrong oil, wrong plugs, bad riding conditions, cheap fuel, out of tune, carb out of tune.

You are not mixing your fuel with oil are you?

You might need a carb tune up (Id start by adding some injector cleaner to the fuel according to the bottle instructions.

You might put a hotter plug in your engine, one or two range increase.

If you will go to a good auto parts store, they will probably have a chart of assorted plug conditions and their cause. The counter man may be able to make a recommendation to you.

Posted on Oct 18, 2009

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1 Answer

Misfire cylinder,


Hi Anonymous, and the usual suspects are:
1. Spark plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discharged.
6. Damaged wire or loose connections at battery terminals,
ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. Water or dirt in fuel system, carburetor or filter.
9. Fuel tank vent system plugged or carburetor vent line closed off.
10. Carburetor controls misadjusted.
11. Damaged carburetor.
12. Loose or dirty ignition module connector at crankcase.
13. Faulty MAP, CKP, and or CMP sensors.
14. Incorrect valve timing.
15. Weak or broken valve springs.
16. Damage intake or exhaust vale.
For a prime suspect please visit website below:
Harley Davidson Sportster error codes and how to access them
Good luck

Dec 05, 2013 | 2000 Harley Davidson XL 1200 S Sportster...

1 Answer

2005 sportster rotates but no start


Hi Anonymous, when checking for spark the CKP needs to measure the compression bump in order to send the correct signal to the ICM/ECM so always check for spark with either a third plug grounded or lift the end of the plug boot 1/2 " off one of spark plugs that are in the head. and the usual suspects are:
1. Fuel tank empty
2. Fuel supply valve turned off.
3. Fouled spark plugs.
4. Engine flooded with gasoline as a result of over use of enrichner.
5. Fuel valve or filter clogged.
6. Vacuum hose to automatic fuel supply valve disconnected, leaking, or pinched.
7. Discharged battery, loose or broken battery connections.
8. Loose wire connection at coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, spark plug cable connections loose,
or cables connected to wrong cylinders.
10. Ignition timing incorrect due to faulty ignition coil, ignition module, or sensors " Manifold Absolute Pressure" "Camshaft Position Sensor" "Crank Position Sensor" "Brake Apply Sensor
11. Engine lubricant to heavy ( winter operation )
12. Sticking or damaged valves or push rod wrong length.
13. Primary cam sproket spline sheared or missing spacer.
14. Security alarm system not disarming.
For a primary suspect please visit the website below: Good luck
Harley Davidson Sportster error codes and how to access them

Apr 21, 2013 | 2000 Harley Davidson XL 1200 C Sportster...

1 Answer

1998 sportster xlh 883 back fires only when hot and restarted


Hi Anonymous, and the usual suspects are:
1. Spark plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discharged.
6. Damaged wire or loose connections at battery terminals,
ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. Water or dirt in fuel system, carburetor or filter.
9. Fuel tank vent system plugged or carburetor vent line closed off.
10. Carburetor controls misadjusted.
11. Damaged carburetor.
12. Loose or dirty ignition module connector at crankcase.
13. Faulty MAP, CKP, and or CMP sensors.
14. Incorrect valve timing.
15. Weak or broken valve springs.
16. Damage intake or exhaust vale.
For a prime suspect please visit website below and good luck:
Harley Davidson Sportster error codes and how to access them

Jun 17, 2012 | 2005 Harley Davidson XL 1200 C Sportster...

1 Answer

Sportster 2001 883 has spark but will not start


Hi Anonymous, and the usual suspects are:
1. Fuel tank empty
2. Fuel supply valve turned off.
3. Fouled spark plugs.
4. Engine flooded with gasoline as a result of over use of enrichner.
5. Fuel valve or filter clogged.
6. Vacuum hose to automatic fuel supply valve disconnected, leaking, or pinched.
7. Discharged battery, loose or broken battery connections.
8. Loose wire connection at coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, spark plug cable connections loose,
or cables connected to wrong cylinders.
10. Ignition timing incorrect due to faulty ignition coil, ignition module, or sensors " Manifold Absolute Pressure" "Camshaft Position Sensor" "Crank Position Sensor" "Brake Apply Sensor
11. Engine lubricant to heavy ( winter operation )
12. Sticking or damaged valves or push rod wrong length.
13. Primary cam sproket spline sheared or missing spacer.
For a primary suspect please visit the website below:
Harley Davidson Sportster error codes and how to access them
Good luck

Apr 28, 2012 | Harley Davidson XLH Sportster 883 Hugger...

1 Answer

I have a 1974 sportster XLH that I started about 15 years ago and shut off because front cylinder was sucking air around intake and heating the front pipe up. Put the bike on hold until months ago. Bike...


Hi Bill, when checking for spark the CKP needs to measure the compression bump in order to send the correct signal to the ICM/ECM so always check for spark with either a third plug grounded or lift the end of the plug boot 1/2 " off one of spark plugs that are in the head. and the usual suspects are:
1. Fuel tank empty
2. Fuel supply valve turned off.
3. Fouled spark plugs.
4. Engine flooded with gasoline as a result of over use of enrichner.
5. Fuel valve or filter clogged.
6. Vacuum hose to automatic fuel supply valve disconnected, leaking, or pinched.
7. Discharged battery, loose or broken battery connections.
8. Loose wire connection at coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, spark plug cable connections loose,
or cables connected to wrong cylinders.
10. Ignition timing incorrect due to faulty ignition coil, ignition module, or sensors " Manifold Absolute Pressure" "Camshaft Position Sensor" "Crank Position Sensor" "Brake Apply Sensor
11. Engine lubricant to heavy ( winter operation )
12. Sticking or damaged valves or push rod wrong length.
13. Primary cam sproket spline sheared or missing spacer.
14. Security alarm system not disarming.
For a primary suspect please visit the website below: Good luck
Harley Davidson Wiring Diagrams and Schematics

Oct 23, 2011 | 1979 Harley Davidson XLH 1000 Sportster

1 Answer

My harley sportster 1200 xlh 1990 seams to be running rich but i have now noticed that she is not fireing on the front cylender on initial starting but when it starts it cuts in what could this be have...


Hi Bennymullins, and the usual suspects are:
1. Plugs in bad condition, wrong type or number or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discarged.
6. Damaged wire or loose connections at battery terminals especially the ground cable at "BOTH" ends, ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. If your bike has a CKP sensor you must leave both plugs in
head and check for spark with a 3rd plug. Good luck and have nice day.Harley Davidson Wiring Diagrams and Schematics

Feb 15, 2011 | 2000 Harley Davidson XL 1200 S Sportster...

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

Not getting spark all the time


I think the only problem you have is a loose or corroded connection somewhere. Check your module plug connectors for corrosion (green junk). Check wires to coil, kill switch and other connections for loose or frayed wires or connectors.I doubt that you have a bad electrical component since it starts sometimes but it is possible. Let us know what you find.






Feb 10, 2009 | 2001 Harley Davidson XLH Sportster 883...

1 Answer

2003 883 sportster wont start


What u are describing is typical of a faulty ignition system, but could also be a fuel problem. I check by removing the aircleaner and rotating the throttle. If u see a nice spray of fuel, thats probably not the problem. Check for a spark at the plugs. I can explain how if you need me to. If you cant see a good spark, U have an electrical problem. I had a crank position sensor go bad on me. Dont do what I did (replaced the battery, ignition, and regulator as part of my diagnosis procedure)

Nov 08, 2008 | Harley Davidson Harley-Davidson Motorcycle...

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