Question about Harley Davidson Harley-Davidson Motorcycle Desktop Telephone

1 Answer

Ignition 2006 superglide turns over but no fire on plugs

Posted by on

  • Anonymous May 18, 2008

    It has a shutting down problem, when you ride it a long distance. Then it cools off and restarts again. Its has a new battery, ignition system and coil and wires and spark plugs too. I had in the Harley shop now 3 times and they can't find the problem yet. Intermitting problem sucks.

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 150 Answers

Check for voltage to/from ignition system, check coil, check wiring

Posted on May 07, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

2005 fatboy starting problem


Start with the battery and make sure u have at least 12.5 volts and good cable connections
1. Are the plugs fouled ?
2.Fuel filter clogged ?
3.Check all the (vacuum) lines for tight connection
4. Sparg plug cables, coil
5.Ignition timing, sensors

Dec 01, 2008 | Harley Davidson Harley-Davidson Motorcycle...

1 Answer

Bike Won't Fire


Timing is off. If the timing isn't exactly right it will turn over until the battery goes dead or the starter burns up (which ever comes first). The fuel/air mixture has to be ignited, expelled from the engine,etc. for the bike to run.

Nov 22, 2008 | Harley Davidson Harley-Davidson Motorcycle...

1 Answer

Wiring harness 1974 sportster???


I am assuming your bike is stock, or close to it. In 1974, all h-d's used a battery coil ignition with wasted spark. Battery positive flows from the ignition switch to the coil, through the coil primary winding to the points, then open or shorted to negative (through the chassis) depending on the points being open or closed. When the engine is turning over, this is what happens: The small cam that operates the points has the points in the closed position, so battery current is flowing through the coil primary, through the closed points to negative. This causes the primary winding inside the coil to set up a magnetic field. When the cam starts to open the points, the current tries to bridge the gap. If we let this happen, the big arc between the point surfaces would burn up in a hurry, and the plugs would not fire for the following reason: The ignition coil is a transformer. It has a primary and secondary winding.The secondary winding has many more turns of wire than the primary. When the secondary winding "cuts" magnetic lines of force a larger voltage is induced in the secondary. In the case on your sporty, we are boosting 12 volts to over 10,000 volts. This depends on 2 things: The number of lines of force and the speed they are cut. So, when the points just start to open, the condenser absorbes the current until the points are open enough to prevent arcing. Then the current flow through the primary winding stops. The magnetic field quickly collapses, cutting through the secondary windings that are connected to the spark plugs. The resulting high voltage (pressure) Jumps the gap on both plugs and lights the fire. One of the cylinders is on the exhaust stroke so that spark is wasted. So: ignition on : 12v at coil positive. With points closed, 0 volts at coil negative. If you read voltage here, the points are dirty or open or the wire from the coil to the points is open. Points open: 12 volts at coil negative. To check for spark, you don't have to crank the engine. Just manually opening the points should fire the plugs. After you get the plugs firing, post again and I will tell you how to razor tune this thing. It should start instantly with a perfect idle. Hope this is clear.

Oct 14, 2008 | Harley Davidson Harley-Davidson Motorcycle...

1 Answer

2005 roadking wont start.


You didnt mention how you tried to jump it. If it was from a car battery, you could have fried a sensor. If the car you jumped it from was fired up while conneted to your bike, thats the problem right there

Sep 10, 2008 | Harley Davidson Harley-Davidson Motorcycle...

2 Answers

No rear spark, put on new coil, new plug wires and new crank position sensor, still only running on front cylinder.


I had almost the same thing happen on my 03 sportster it was the ignition modual dont know what year yours is but 03s are bad about messing up harley said they fixed the problem on the replacements

Sep 01, 2008 | Harley Davidson Harley-Davidson Motorcycle...

1 Answer

2002 harley fatboy will not start


Let me start by saying I've owned Harleys for twenty years and do all my own work, so don't let the computer expertise on my profile detour you from taking my advice. There are several things that can cause a no start, you'll need to narrow it down to either a fuel problem or a fire problem. Start by checking the spark. Take a plug out, ground it to the head, and crank the engine. If there's is no spark then you need to start tracing it back. Check the coil, ignition module, and voltage regulator connections and wires. Most of the time when you lose fire it's a loose or broken wire/connector, or the coil or ignition module has failed. The regulator can cause a loss of spark, but generally only causes the battery to go dead. Rare, but occasionally the magneto will go out. If you have a good spark, then check for fuel. Turn off the petcock and take the fuel line loose at the carb or injection end, then turn the petcock back on and see if you have fuel getting to the carb/injection system. If not, then you have a faulty petcock, or a plugged screen in the petcock. If you are getting fuel, then, if carbureted, take the carb off, clean it, and check the jets and other internal workings. If this is an injected model, I'm afraid you'll have to take it to a shop that has the diagnostic tools to read and calibrate the injection system. Wow, this is starting to get long winded. Try these and let me know, I have a wealth of knowledge available to me from guys I ride with.

Aug 06, 2008 | Harley Davidson Harley-Davidson Motorcycle...

2 Answers

I have a 1984 Harley Davidson FXRS. I have a single fire crane hi 4 ignition system. It ran flawlessly for a few years and now the bike missed a few time then quit entirely. Now have no spark and would...


There's no real way to check the coil, it either works or it doesn't. I've found that with my Harley's when I lose spark it's generally a bad wire or loose connection. If the wires/connections are good, then it's either the coil or the ignition module. I'd say with the newer Crane on it, that the problem is going to be with the coil. Check the voltage from the ignition module going into the coil. I'm not exact on the voltage, but as long as you have a good strong current getting to the coil, and low to nothing on the plug wire side, then the coil is bad.

Aug 03, 2008 | Harley Davidson Harley-Davidson Motorcycle...

1 Answer

Im not getting any spark from one of side of my 2 cyclinder kawasaki ninja 500 EX. Its an 1987. I have replaced the plug wires and the pickup coils. I switched the coil packs and both work. Im just not...


Hi,

To my knowledge, a 1987 Kawasaki EX500 uses a TCBI with digital advance to fire the ignition coils upon receipt of pulse from the trigger/pickup coils.

Since the pickup coils are new, and you have swapped the ignition coild, replace the high tension wires and checked/replace the spark plugs, the the only cmponent left is the CDI (electronic ignition system).

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Jul 02, 2008 | Harley Davidson Harley-Davidson Motorcycle...

1 Answer

1991 fatboy


Hi,

Appreciate the vote of confidence but there are a few others who are likewise knowledgeable if not more..

On to your concern, it would seem you have two (2) issue, 1st if wont crank and the second will crank but not start.

No Crank: Due to the massive current required by the starter a component is installed between the starter button and the starter. This component then switches the battery to the starter motor. In cars this is the starting solenoid, in most bikes, this is the starter relay. Normally in the starter relay there would be 2 big terminals for the battery and the starter motor cables with 2 smaller wires for the starter switch and ground. Try this - try pushing the start button with the headlights on, if the headlight dims considerably, then the starting relay is good and the motor is bad; on the other hand if the headlight dims just slightly or not at all, it is the starting relay (the one with the clicking sound).

Most starter motor problems could be:
1. the bearings/bushings at the ends of the armature;
2. carbon brushes;
3. commutator segments (the multiple small copper plates that the brush contacts with).

However, it may be to your advantage to simply replace the motor should it be deemed defective, difficult to secure parts or not economically reasonable to go down component level repair.

Will Crank but not fire: There are 2 major requirement for a gasoline engine to fire, fuel and ignition. No fuel could be verified by removing the air cleaner and pouring a small amount of fuel down the throat, start the bike, if it start and runs (even for just a moment), you have verified the fuel problem. No ignition could be verified by removing one of the plugs, reinsert the high tension wire plug to the sparkplug and place the sparkplug atop any metal part, crank the engine, there should be a spark at the plugs.

Pls post back results whether fuel or ignition and we can go further from there.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Jul 02, 2008 | Harley Davidson Harley-Davidson Motorcycle...

2 Answers

88 inch motor will not run properly.


Is the front cylinder firing? put a spark tester on it or pull the plug and ground it to the motor head or something and roll it over and see if it fires. If not then chances are the ignition is bad.

May 30, 2008 | Harley Davidson Harley-Davidson Motorcycle...

Not finding what you are looking for?
Phones Logo

Related Topics:

69 people viewed this question

Ask a Question

Usually answered in minutes!

Top Harley Davidson Phones Experts

kakima

Level 3 Expert

96518 Answers

Brian Mathews

Level 1 Expert

20 Answers

Brudog1

Level 1 Expert

35 Answers

Are you a Harley Davidson Phone Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...