2000 Road King No Spark (Coil is Good)
 

Hello, I've got a 2000 Road King fuel injected with a no spark issue. I tested the coil and it was good. Bike cranks over easily but getting no spark to the plugs. I did some reading and found people with similar issues had a band Crank Position Sensor. Just curious what you guys think?

Also, all areas were showing clear when I attempted to pull any codes.

Thanks in advance.

Possible Bank Angle Sensor.
In 1999 there was a bracket that was defective.
Caused sensor to think bike was on it side....killed motor.
From memory..i believe the unit would ground and cut power thinking bike was on its side...a shade tree mechanic test was a disconnect of the plug at sensor and that would allow the bike to run minus the safety feature.

Make sure you have a strong battery. It comes to a point where starter pulls everything and ignition gets nothing with a weak battery. This is also where you start to burn up your starter.

Had this happen on a 02 Ultra. checked everything but ended up being a $13 system relay

Thanks for the info guys!

The owner did lay it down in a ditch a few months ago and bent the crash bar. I will check all the suggested items. Everything else on the bike works as it should just no spark. He did say it started after the wreck but then quit.

Thanks again!!

How did you verify no spark? I have never had to do it, but others say when the plugs are removed and one isn't grounded, the other won't fire, so it appears there is no spark. With the plugs installed and connected, squirting a little fuel past the throttle plate and cranking will usually get a couple of "pops" if the plugs are firing. If that happens, it is really a fuel problem. The same test and no "pops" and is is indeed ignition. I believe the system relay and the brake relay are the same and can be interchanged as a trouble shooting step to see if the system relay has a problem.

First think I did was squirt some starting fluid in the throttle body. It didn't even hickup. I grounded the plugs to check for spark. I tried different plug wires, plugs and nothing. I went to another bike I have, tried the same method and got plenty of spark. I'm going to do some trouble shooting tomorrow with the relays and bank angle sensor. Bike was running fine before he laid it down.

Thanks

First thing to do is to make sure the battery is good. Have it load tested at the local auto parts store. Then pull any trouble codes. Then check relays, and fuses. Next pull the fuel tuner out of line if it has one, and see if it will fire when connected directly to the ECM. If there is still no joy it will be a process of chasing down the bad sensor. Not sure about the 2000 models, but the 1998 FSM has a complete EFI diagnostic flow chart.

Well..... I swapped all the relays and bank angle sensor with ones I know are good (off a running bike) and still no spark to the plugs. The bike is still not showing any error codes. I guess the step is crank position sensor and cam sensor.


Also, I hook a jump box to the battery each time I crank over the engine to make sure there is enough power.

Check the cable connection at the computer box.
I will guess that you took all fuses out one by one and reviewed the fuses.
I will also guess there is no security system added that would turn power to the coil off.

No spark
 

Have you tried the run off switch on the right side of your handle bars. It could have been damaged when the previous owner laid it over. Just a thought. Relays do go bad, my did, but only happened when the bike was hot. Changed
the relay that is located in front of the battery box with one from a local parts store 12 years ago and the RK is still running without any hic-ups.

Thanks, yes I have checked all fuses and NO security on this bike. I'll double check the emc connection.

I have an 08 so this might not apply, but the frames are the same so it might. On mine, the wire from the crank position sensor runs underneath the front frame cross member. About centered under the cross member is a plug that connects it to the rest of the wiring harness. In almost 90,000 miles I have NEVER had a clean oil filter change. No matter what I try to do, some oil drips on the front engine mount and down onto that plug. If it has never been separated and both sides sprayed with degreaser, it might be so gooey that the CPS signal is not getting to the ECM. If you decide to replace the CPS you will have to separate that plug anyway. Cleaning and reconnecting is practically free so it is worth a try.

Just wanted to give an update.


The issue was the Crank Position Sensor. I bought a new one, slung it on and BAM the plugs had spark. Bike fired right up and runs great now.


Thanks for all the help and info!! Maybe this thread will help someone down line.