How could this happen and how can I check to make sure it did not happen?

[Roy1]

I have a 2006 M7, I picked the sled up this fall. I was just going over the sled checking things over and was going to check the compression on the motor,
So I removed the pipe and take the plugs out. I reach over and open the throttle all the way up to check and see if it looked like the throttle bodies were opening up all the way. When I open the flipper all the way and let go two things happen. 1, I hear whats sounds like a screw maybe fell in the sled or a spring, hard to explain the sound. And the throttle sticks and does not close all the way, stuck 1/2 way open.
So I flip it a few times and it finely closes up and seems to work fine (Why did it stick?)
So I go to get the compression gage and check the compression on both cylinders and their both the same at 125.
Next I'm going to remove the little shield above the motor in front of the gas tank/handlebars. I notice the screw on the right side is missing over the motor.
Here is my big ?, could have that screw popped out when I open the throttle up and fell in the spark plug hole and fell through into the intake port on the bottom of the cylinder? If so, how can I find it or make sure it never happen. It is really bugging me.
I'm not sure if that was the noise I heard when I open the throttle up and I'm not 100% sure the screw was not missing. I try to find the screw on the bottom of the belly pan but no luck. I'm going to remove the pan and see if I can find it.
What are the chances it fell into the cylinder and if so what could happen if its laying in the intake port? Why did the throtlle stick as I started before this a few times and it never stuck?
Looking for feed back on what I should do to make sure there will not be any problems. I will not start the sled until I get some feed back here.
Thank you.

 

[AKSNOWRIDER]

1 in a million chance ..but I wouldnt take the chance of firing it up without looking..pull the airbox ,and carbs/throttle bodies and take a look..its only time..something was making the throttle stick and I would want to know what and fix it...

 

[89sandman]

always better safe than sorry, if it is in there the first time you fire it off it will probably end up in the cylinder.

 

[JHG]

The screw falling in to the spark plug hole sounds a little far fetched but I guess it could happen. If the piston is below the transfer port I guess the screw could have fallen down one of those, if that were the case then the screw could be in the case. The only way that's coming out is to tear down the motor. I seriously doubt that any of the above has happened though and if it did you are one unlucky dude.

 

[Roy1]

The screw falling in to the spark plug hole sounds a little far fetched but I guess it could happen. If the piston is below the transfer port I guess the screw could have fallen down one of those, if that were the case then the screw could be in the case. The only way that's coming out is to tear down the motor. I seriously doubt that any of the above has happened though and if it did you are one unlucky dude.

That is my luck. I stood lookig at where the screw was missing from and looking at the spark plug hole and saying there is no way it could fall out just beacuse I hit the flipper and top it off fall in the plug hole. But I thought this would just be my luck. I'm going to pull the pan and check there first and hope I find it. I tried to get it with a magnit but no luck. God I'm not even sure it fell out then, other then I heard this sound like something falling down in the sled when I hit the throttle. And why did the throttle stick? The screw can't go through the reeds.

 

[Roy1]

Pulled the pan and did not find the screw. I even stuck the same screw in the hole it fell from to see if it would fall in the spark plug hole. It never hit the hole but did come close ones, Looks like I will pull the intake and reed and see if its in there. Will let you all know if I come across it. Dam luck.

 

[JHG]

It won't be in the reeds, the only way it could get there is to go through the throttle bodies. If it did indeed fall in the spark plug hole it won't be in the reed cage.

 

[Dam Dave]

roll the sled over on its side, both sides, listen for the screw

 

[hammo]

I have been working in a sled/moto shop for years, and nuts and bolts end up in the strangest spots sometimes! The only downside is, wondering if something fell in the bottom end!

Also, 125 psi is kinda low, might want to do a rebuild while you are tearing the motor apart to look fo ramdom screws, lol. Good Luck

 

[Roy1]

The motor only has 200 miles on it, the gauge mite not be correct, but their both in line with each other is all I wanted to know. I believe if I pull the reed I can take a small magnet and reach the bottom end and fish it out if its in there.

I have been working in a sled/moto shop for years, and nuts and bolts end up in the strangest spots sometimes! The only downside is, wondering if something fell in the bottom end!

Also, 125 psi is kinda low, might want to do a rebuild while you are tearing the motor apart to look fo ramdom screws, lol. Good Luck

 

[Arctic Thunder]

It won't be in the reeds, the only way it could get there is to go through the throttle bodies. If it did indeed fall in the spark plug hole it won't be in the reed cage.

"If" the screw happened to fall into the spark plug hole and found it's way to the intake port it would be in the reed cage. I couldn't get through the reeds to the throttle bodies. Unless you have a peddle broken off. And if you had the luck for the screw to get into to the spark plug hole than I am sure you are missing one reed peddle letting it get to the throttle bodies.

Anyway. My sled is missing the same bolt. (I tend to leave it out just because I have to take the pipe out to remove it. So when I am wanting to tinker in the field I don't have to pull the pipe to remove the heat shield.



Thunder

 

[Funoutfitters.com]

As far as the throttle body sticking I would check the oil pump also to make sure nothing is hanging up.

Hope this helps if there is anything else I can help you with let me know.

Jeff

 

[Roy1]

Will got a chance to start taken the intake apart tonight. The reason the throttle stuck open was there was a washer laying in the throttle bodie, About a 3/8" flate washer. How the he!! that got in? Looks new as the sled only has 200 miles on it. Will hope to dig in the reed cage tommarow and let ever one know if the screw is in there. Only got to work on it for about 45 min.

 

[ezra]

home depot sells a fiber optic camera called the see snake.I bought one last year when I dropped screw that bounced off ecu and in to y pipe and in to a jug.it was all in slow motion but nothing I could do.well I could see what side the screw was in and it did fall in to the lower side transfer port. I was able to attach a sm magnet to the end of the camera and stick it to the screw .well it took Over a hour.now I use it for allot of stuff.I can just pull the rubber boot between hood and air box and stick cam all the way in to check reeds or under motor to find dropped parts.in the house to see how gross my heat ducts were ext ext

 

[Roy1]

Will thought I let ever one know I got done tearing into it this weekend. As mention before I did find a flat washer in the mag side throttle body. Digging deeper there was a nut in the pto reed cage. It was the nut and washer that hold the air vent to the hood. There was no screw to be found in the bottom end. I can tell you one thing for sure there is not much room to remove throttle bodies from the front and get at the boots and cages. The noise I heard was the washer when it must of flipped in the throttle body when I open the throttle up and got stuck on the flipper in the throttle body. Glad I dug into it. Thank you every one.

 

[mo1000]

good job finding those parts ....... that would have been costly

 

[Engine Pro 5x]

Kinda makes you wonder what else is floating around in there !! >>>>.

 

[777]

UNREAL. I'm not taking any chances, I'm on my way out right now to remove ALL those nuts and bolts! No way I could sleep with these possabilities.

 

[Blk88GT]

Good work. I found a large chunk of plastic in my reed cage when I pulled my motor. Where it came from is still a mystery.