I was riding around today and heard a pop and my bike shut off. I noticed the spark plug had popped up out of the motor!? Any idea what could cause this? My bike is a 02 400ex.
Thanks ,
Tyler
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Be Good or Be Good At It
I was riding around today and heard a pop and my bike shut off. I noticed the spark plug had popped up out of the motor!? Any idea what could cause this? My bike is a 02 400ex.
Thanks ,
Tyler
2002 Honda 400EX, PRM Swinger/A arm Skids, Works Front Shocks, Renthal Bars, White Brothers E-Series Jet Kit, Nerf Bars.
AIM - TD53
Senior Member
happend to my TB once too
1987 RZ-Banshee (back in business)
RIP IT
Did it strip the spark plug hole, or did it thread out. If it just treaded out it probaly wasn't tight enough... If it de treaded it probaly is over presured.
94 4trax 300 4x4 01 MXZ 700 01 400ex 86 250R
Shut up and dance!
LOL that thing must be a BEAST compression wise. I've seriously never heard of that.
Jeff
2008 Yamaha Raptor 700
2003 Honda CBR954RR
King of Rolling Over
my bike did that once too. It sucked cause i had to push it about a mile home cause i didnt have a tool kit.
01' Honda 400ex
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Member
If it pulled all the threads out it was probably tightened too much at one time. Your local NAPA will have a thread replacement (Helicoil) for it ($45.00) make sure to take the plug with you for the correct pitch and size. If not stripped out just tighten it back down and hit the trails. Just a reminder! You will have to remove the head to do the thread repair thing!!! Happens all the time and is usually from over tightining of the plug! Same priciple as stripping out a bolt.
2004 Z-453
Ported and polished
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Roll Design +1 long tavel A-arms
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Registered User
Happend to me one time. it was from not getting it tight enough. i always do a couple turns when it snugs up, and hasn't happend since.
im not trying to be mean but COMEON you have to have a thread about that !!! ALL YOU HAVE TO DO IS TIGHTEN IT BACK DOWN!!!
Be Good or Be Good At It
Honestly yes I needed a thread, the reason for the thread was to understand why this happened and if there was something i can do about it. Also , without the thread i would have never checked for it to be stripped out, I would have just tightened back down. So the thread was helpful to me. If it wasn't helpful to you or you didn't think what i asked was useful , DON"T REPLY!. There are beginners out there who don't know it all. Waste of my time to read it , and a waste of your time to write it. Not being mean as well.
Tyler
2002 Honda 400EX, PRM Swinger/A arm Skids, Works Front Shocks, Renthal Bars, White Brothers E-Series Jet Kit, Nerf Bars.
AIM - TD53
Senior Member
so were the threads shot??? thats crazy ive never heard anything like that
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