Spark plug change: what the...

[beatle]

Went to replace the plugs this afternoon and found this anomaly in cylinder 4. It looks like the original spark plug has come apart and unthreaded itself inside the spark plug wire. I've attempted to put the plug back together by threading the two pieces back together to no avail. Any other tricks here or is it time to buy new wires? How the heck did this happen anyway?

 

[DON_JANO]

you must take off the cup on the new spark plug, try spin it

 

[beatle]

Thanks, I got it. I've done spark plugs on every car I've owned and never had to do this. First bike though!

 

[DavesFZ]

No worries, it happens alot. At least you didn't try digging at the spark plug wires with needle noise pliers trying to get the threaded cap out...

...right?

 

[beatle]

Not quite, though I probably would have if I had pliers that reached. I did unscrew the terminal from the wire, however, and put it back together. Got all of them in and hooked back up, then went for a ride. Might be placebo, but it does seem to run smoother. I had a little over 17k on the originals.

 

[FinalImpact]

Kinda late now, but did you check that the wires were secure into the caps??
It really helps knoock all the vibes down another notch making the bike that much better to ride.... Also, did you confirm the plug gap was below the MAX limit? Spec: 0.024–0.028 in (0.6–0.7 mm)

Here is a thread on the topic w pics and details: http://www.600riders.com/forum/fz6-...tion-cure-bad-vibrations-spark-plug-caps.html

 

[beatle]

Truthfully I did not check the caps or the gaps.