Please Help! Spark plugs not getting spark.

[midnightrider10]

Evil- Thanks again for all the help.

As far as the ECM is concerned, I had to replace the original ECM, but I found a brand new OEM ECM online and installed it. The bike did run with the current ecm I have hooked up.

I do own ECM Spy. The only thing I have done on the program was reset the TPS. I noticed the program had a diagnostics section but no trouble codes popped up besides the air sensor code (Because I removed the plug from the sensor when removing the lower half of the airbox).

I'm going to be out of town until tomorrow night but I will do the above tests ASAP tomorrow.

FYI: The bike is a 2003 Buell XB9r, are these kind of electrical problems typical of buells? I'm a first time owner.

Thanks for taking the time to troubleshoot me through all these problems.

 

[Evil Mechanic]

I dont know if this is a common problem or not. I have only had a buell for less than a year too lol. Ive done all the electrical diagnostics at my shop for the last 7 years and Ive come to learn that if it can go bad, it will.

 

[midnightrider10]

Evil,

I did both tests for the harness side of the connecter and I did recieve a positive light test on both the Bk/W wire as well as the R/W wire.

I moved to the sensor side and hooked up my dvom.

After I crank the motor, When negative lead is connected to negative battery terminal and positive lead is connected to the sensor side G/W wire, I do see a fluctuation from .011 to roughly .021.

What do you think from here?

 

[Midnight82]

Midnightrider - When you bought a new ECM for your bike, did you get one for your exact year and model?

 

[midnightrider10]

Yes, The ecm was identical part numbers matching.

The confusing part was the bike has ran with the current ecm in it, its not like i put the new ecm and it wouldnt start. I replaced the ecm and the bike started and idled.

 

[Evil Mechanic]

It souns to me like a bad ecm. Do you have a warranty on it? Could also be a broken wire i guess. Does your dvom do continuity?

 

[midnightrider10]

No warranty on the ecm. Yes my dvom does do continuity.

I dont know if this matters or not but I have noticed a few things since the bike hasn't been starting.

When I turn the ignition on, the fuel pump sometimes makes a different priming pitch sound than before, or it even pauses a second or two then primes, and sometimes it wont prime at all unless I turn the ignition off and then back on. I dont know if my mind is playing tricks on me but the priming whine of the fuel pump seems to have a different pitch than before, but at this point it could just be my mind playing tricks on me

I know this has nothing to do with me not getting any spark but I thought I'd just put everything out there so my whole situation could be understood.

Is there a way I can test the coil pack itself? I'd hate to spend $360 at HD for another ECM, when the coil pack is only $42.

Evil thanks again for the help, but what is your opinion after all this?

 

[midnightrider10]

*Update

I hooked up my bike to ecm spy and ran a few diagnostic tests and the spark plugs are sparking.... This makes me question the ecm because it was not doing this earlier. I find this strange because I ran the exact same test a week ago and it was not sparking at all. I degreased all my connectors and replugged everything but besides that I have no idea why it is all of a sudden working now...?

I want to put the plugs back in but now im faced with a major issue....How the hell do you put the rear cylinder spark plug on!!!??? I've tried a 5/8 spark plug socket with an elbow and 6" extension but I'm afraid I half-way stripped the head. Is there a easier way because i feel like if I try again I might strip the hole?

 

[Evil Mechanic]

Remove the left side air scoop and stick a finger or 2 up in there to help guide the plug.

Glad your bike is working man [up] next time this happens, try tapping on the ecm with a small screw driver or something.

 

[midnightrider10]

Yeah I'm not 100% sure if it's going to run or not. I think I'm pretty close to cross threading the spark plug so I'm gonna wait and but a socket flex bit tomorrow and try to get it in.

Evil- I creeped on your profile, man you've got a beautiful bike!

 

[Evil Mechanic]

Thanks dude. Its about to be sold or scrapped for my next project. Im fightering a 1125r and dont have room for 2 bikes.

 

[midnightrider10]

Well I figured out the problem was faulty connections towards the front of the bike.

Evil I want to thank you for all your time and effort you spent helping me, I really appreciate it man.

Jason

 

[jfman]

I know this is an old thread but where eactly near the front of the bike?

I have a smilar issue with my Buell.

 

[spd579]

bump.....I'm having the same issue.....

What ffaulty connections?

 

[Frankiels3]

&spd579

Look at my thread "and it won't start"

I'm having the same issues.
Maybe mine will help you