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1987 Harley softtail . Why don't it spark an it is

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  • 38 Answers

No electric supply or no clearance on contact point

Posted on Jul 31, 2013

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6ya6ya
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soloxilu
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SOURCE: harley speedometer stopped working

Speedo pick up sensor is bad. Replace it.

Posted on Jul 08, 2009

wd4ity
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SOURCE: Tire Pressure - Harley Davidson Heritage Softtail

30 psi front
36 psi rear (single rider)
40 psi rear (dual riders)

Posted on Apr 03, 2010

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SOURCE: 2004 harley heritage softtail. Battery dead.

Battery is under seat, either 8 or 10mm wrench to remove terminal nuts. Be careful with cables.

Posted on May 25, 2010

wd4ity
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SOURCE: 79 harley ironhead 1000cc xlh no spark from coil

It sounds like your sensor in the timer cavity on the right side of the engine is bad. Disconnect the blue wire from the coil. Take a spark plug out of the engine, put it back in the spark plug wire, and lay it on the head. Turn the switch on and momentarily touch the blue wire to the coil. When you take the wire off of the coil, you should see a spark at the plug. The purpose of the sensor in the timer cavity is to stop the flow of current in the coil and initiate a spark.

Good Luck
STeve

Posted on Sep 21, 2010

wd4ity
  • 4565 Answers

SOURCE: 2002 harley softtail makes clacking

Sounds like the contacts in the starter solenoid are bad. Looking at the end of the starter form the right side of the bike, you see a 5-sided plate held on by three 3 mm screws. Remvove these screws and take the plate off. Behind the plate is a plunger and a long spring. Notice I didn't tell you to disconnect the battery. Remember there are things that are sitll "hot" in there so be careful of what you let touch. If you feel better about it, disconnect the battery.

Look in the solenoid and you'll see two large copper contacts. There is also a large copper "washer" on the plunger. You can see where the "washer" contacts the other contacts. If it looks burned away in a semi-circular pattern on one or both of the contacts, there's your problem.

You can get a "rebuild kit" from either Harley or on the aftermarket. Just take the bolts loose that hold the contacts in and swap them out. You can usually do this without removing the starter depending on the model of your bike. Remember too that he starter is Japanese and therefore requires metric tools.

Good Luck
Steve

Posted on Mar 14, 2011

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1 Answer

Where is the sensor for 2007 softtail?


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:
Big Twin Carb EFI DTC Intructions codes Harley Davidson Forums Harley...

Jan 17, 2014 | 2007 Harley Davidson FXSTC Softail Custom

1 Answer

Where is the sensor for a 2007 softtail motorcycle


Hi Gloria, 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: Good luck
Big Twin Carb EFI DTC Intructions codes Harley Davidson Forums Harley...

Jan 17, 2014 | Harley Davidson Motorcycles

1 Answer

I changed the stock coil to a screamin eagle H-performance coil, new spark plugs,new plug wires on my 1998 hearley davidson 1200 sportster. Now it don't run right.


Hi Anonymous, call, take a ride or trailer your bike over to your local dealers service/parts department, I'm sure they will be happy to take your Harley Davidson for a test ride if necessary/possible and offer professional advice and assistance concerning your issue. Good luck have a nice day.

Sep 14, 2012 | Harley Davidson XL 1200X Sportster...

1 Answer

On a 1987 sporster not sure what to officially call it but I was told it was the brain box and where can I find one cheap


On an '87 Sportster, the only "brain box" or "black box" is the ignition unit. If yours is bad, you may be able to get one from a H-D dealer but it ain't cheap and they will not take if back if this turns out not to be the problem. Have you checked to see if your bike has any spark to the spark plugs? The only thing that this box does is contol the ignition timing. It does not generate the spark, the coil does that. If you don't have any any spark, first check to make sure you've got voltage to the coil. Disconnect the small wires from the coil and position them so that they are not touching anything. Turn the ignition on and check that one of them has battery voltage to it. If it does, turn off the ignition switch. Now, using an ohm meter, check the resistance on the primary winding of the coil. Put the meter in R X 1 scale and connect one lead to each of the small terminals on the coil. You should read between 3 and 5 ohms. If you read much more or less than this, your coil may be bad. Another way to check the coil is to connect the "hot" wire to one end of the coil. Make up a temporary jumper wire by stripping about an inch of the insulation from a piece of wire about two feet long. Connect one end of the jumper wire to the other small terminal on the coil. Turn the ignition switch on and MOMENTARILY touch the other end of the jumper wire to the frame. When you take the wire off of the frame breaking the circuit, you should see a spark on the spark plugs. If you do not, make sure you're getting a good circuit and try it again. If you still don't get a spark, your coil is bad. If the coil checks out good, you may have a bad sensor in the timer cavity of the engine. This part is much less expensive than the "brain box". There is no way to test the sensor that I know of. You'll just have to replace it. Make sure you mark the plate and the inside of the timer cavity in such a manner so that you can get the new sensor plate back in the cavity in EXACTLY the same position as the old one was in there. I hope this helps.

Good Luck
Steve

Jul 03, 2011 | Harley Davidson XLH 1000 Sportster...

1 Answer

1996 marlin powered by,1200cc harley davidson .. has no spark


I don't know anything about a Marlin. Matter of fact, I don't even know what it is but I know ignition systems. Get a test light or better yet, a DVOM (Digital volt ohm meter). Put the meters function switch in DC volts 50 volt range. Connect the black meter lead to a good ground, turn on the machine's ignition switch. Using the red meter lead or the test light, touch it to one side of the coil and then the other. You should have voltage on the coil. If you have voltage on both sides of the coil and you don't have a spark, you probably have a bad Hall effect sensor in the timer cavity of the engine. Turn the ignition switch off and take the wires off both ends of the coil. Put the meter's function switch in R X 1 scale. Touch one meter lead to each of the coil's primary winding terminals where the wires came off. You should read between 2 and 3 ohms. If not, the coil is bad. Now, find the "hot" wire by turning the ignition switch on and using the meter in the DC volts function to test for voltage. Connect the "hot" wire to one of the primary terminals of the coil. To the other, connect a plain piece of wire that has had the insulation stripped from each end. Turn the ignition switch on and momentarily ground the bare ended wire you connected to the coil. When you take the wire away from ground, breaking the circuit, you should see a spark at the plugs.

Good Luck
steve

Jun 19, 2011 | 2000 Harley Davidson XL 1200 C Sportster...

1 Answer

Have a 1998 Custom Softtail, when it rains it only fires on 1 cyclinder. Have had it to 2 shops, they replaced the coil and leads. Has not fixed the problem.


Replace the spark plugs, you've got one cracked. Wait until dark tonight. Roll your bike out into the driveway and start it up. Spray it with the water hose unitl it starts to miss on the one cylinder. Look for a wire or spark plug to arc. You can see it readily in the dark.

Good Luck
Steve

Sep 29, 2010 | Harley Davidson FXST Softail Standard...

1 Answer

WILL NOT START 94 SOFTTAIL


You need three things for an engine to run, compression, spark, and fuel. I'm going to assume that nothing drastic happened to cause you to lose compression. So, that leaves fuel and spark. Usually, if your engine quits getting fuel, it will spit or cough a time or two before it dies. If it loses spark, it simply dies, quickly.

I'm also going to assume the "run/stop" switch in not the problem. Check to see if you have voltage at the coil. Turn the ignition switch on and test the white wire going to the coil. If you have voltage there but no spark, check the resistance of the primary side of the coil.

Using a DVOM (digital volt ohm meter) put one lead of the meter on each of the small terminals of the coil, makes no difference which lead goes to which terminal. Make sure you take the wires off of the terminals. With the meter in the "R X 1" range, the resistance of the primary side of the coil should be between 3-5 ohms. Any higher or lower than that, the coil is bad.

If you have voltage and still no spark, I would suspect the something is wrong with the pickup in the "nosecone" on the right side of the engine. If you take the timing plate out, make sure that your mark it first so that you can replace it in exactly the same position.

If you don't have voltage, go to the circuit breaker for the ignition circuit. See if the circuit breaker is tripped. If so, you have a short somewhere between the circuit breaker and the coil.

Good Luck
Steve

Jun 09, 2010 | Harley Davidson FXSTS Springer Softail...

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...

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