No Spark, No Start

[David Owens]

Ok here is what I have I think it is a Hisun, or at least that is what others have told me.  I have no spark at the plug so I have replaced the coil, the wire, the plug, the regulator, and I have the crank shaft position sensor (have a question about that thing.)  So on one side I of the coil the white black I have solid 12, but on the other side I have 0.  Chased the wire back to the solenoid and when plugged in have 12 until you turn key to start then it drops to 0, so wondering if there is a break in the blue black from the solenoid to the coil, will run a test on that later this week.  But I have ordered a new solenoid because I do not think it should drop to 0 when the key is turned either should push it 12 on both side if it works like most.  So the question is what is going on and what am I missing here?  Any ideas?  The next question is where does the crank shaft position sensor go?  None of the books I have show where it goes and I have hunted all over that engine and can not find the silly thing.  So please help?

[Savage3]

Would need more information as to the make or model. A coil usually has a positive and negative and the wiring goes to a CDI, ECM or some other form of igniter.

The pick up coil, pulsar, trigger coil (or whatever you choose to call it) is often located at the stator and is activated by a reluctor on the flywheel or near the crankshaft depending on the type of equipment. 

Sounds like you have a short based on the information provided. 

You will require a wiring diagram and a multimeter to troubleshoot the various components and circuits.

[Tony ba]

Im having the same problem. My quit changing so i replaced stator. Now i have no spark and no fuel. Replaced coil still no spark. Had cub look up a camshaft sensor they told me it don't have one. Talked to a tech said it dose but i can't fine it. Im looking at ecu but tired of throwing money at it.

[Savage3]

The camshaft sensor should be located near stator.  Look at the service manual, it can be called several names, trigger coil, pulsar, etc.

You must test and eliminate each component separately before buying new parts. You will need a service manual and multimeter for testing.

Most of the time, the problem will be small, generally a short on the ground side of the circuit due to corrosion or loose wire.

The problem will require resistance, voltage drop, and continuity testing.

You must be methodical and pay strict attention to detail 

[David Owens]

IMG_5530.HEICIMG_5531.HEICHere are the only two things I could find that say anything about a make a model, where you would think the all the important information is looks like it was a sticker and has been worn off and was not stamped in metal.  Ok where can I find a service manual that shows where it is?  I have a replacement already.

[Savage3]

Check out the service manual download forum. If you can't find it there, google it.  You will need it to find the problem, the manual provides specifications and testing procedures.

The camshaft sensor should be located near stator.  Look at the service manual, it can be called several names, trigger coil, pulsar, etc.

You must test and eliminate each component separately before buying new parts. You will need a service manual and multimeter for testing.

Most of the time, the problem will be small, generally a short on the ground side of the circuit due to corrosion or loose wire.

The problem will require resistance, voltage drop, and continuity testing.

You must be methodical and pay strict attention to detail 

[Savage3]

Try manualslib.com

[Savage3]

Electrical Specifications - Hisun HS500UTV Service Manual [Page 88] | ManualsLib
https://www.manualslib.com/manual/1006793/Hisun-Hs500utv.html?page=88#manual

[Savage3]

Your title should also provide details. You really need the proper manual for information gathering when repairing an electrical problem.

[Savage3]

Electrical Components Troubleshooting - Hisun HS500UTV Service Manual [Page 317] | ManualsLib
https://www.manualslib.com/manual/1006793/Hisun-Hs500utv.html?page=317#manual

[Savage3]

Refer to these sections, pay attention to detail!

[David Owens]

Ok update on this, beyond the changing the coil.  I did tear it down and change the stator but have yet to find the crank shaft position sensor or anything that looks like it.  So someone please tell me where that silly thing isIMG_5582.HEICIMG_5583.HEICIMG_5584.HEICIMG_5585.HEIC

[Savage3]

I haven't viewed the service manual for your model. However,  oftentimes, they call a crank sensor the trigger.  This coil is located right beside your stator. Usually has a blue wire, sometimes a green wire as well.  The ones with only a single blue wire ground to chassis. 

[Savage3]

[Savage3]

Read page 319 of the service manual I posted earlier. It's also called a pick-up coil, pulsar coil etc....

[David Owens]

Ok have looked at that and that part was replaced when I replaced the stator.  However, same problem no spark.

[Savage3]

What is the voltage reading? What is the resistance reading?

[hs500cc]

david, did you ever figure it out?

 

[FTR]

No I have yet to figure it out, I put it on the back burner for a while had to many other things going on.  So updated replaced the stator again and on a 2k ohm I am getting .19, but I get no power when trying to crank it.  So have the spark is not both sides.  It acts like a safety switch is engaged.  I have bypassed the one to the break but is there another one somewhere?  I have pulled at the schematics I can but so far none show another switch.  Everyone tells me to check the crank shaft sensor, well there is not one that I can find.  It is not where everyone says it should be by the stator.  Aside of pulling the clutch side out and apart to remove all the gears to see if it behind that.  But before I go that far I have looked for wires to give me a hint that its there and can not see any.

So help at this point other than the break where is the other safety switches?  Or am I missing something and should just shoot the thing?

[Savage3]

In effect, the pulsar coil is the crank shaft  sensor. It tells the CDI when to spark based on the position of the crank.

[Savage3]

What is the year make and model?

[FTR]

sure but there is only one way to put it in it can not get out of alignment and I replaced the CDI already any other ideas?

 

[Savage3]

What was the air gap set at on pulsar coil?

What is the peak voltage that the pulsar is generating?

[Savage3]

Please remember, just because you replaced the parts, that does not necessarily mean they are functional. (Even if they are brand new)

You must systematically test each component after install.

Verify each component is within spec taken from service manual.

Attention to detail is paramount. Ya can't cheat a single procedure. 

Start at stator, verify.

Then pulsar, then CDI, then coil, then plug.

Start at battery, check voltage.

Is it A/C CDI or DC CDI?