Bolt dropped down the plenum...
FTE Chapter Leader
Joined: Jan 2005
Posts: 13,123
Likes: 4,725
From: Henderson, NV
The way it was semi-random at first and then becomes a regular tick-tick-tick leads me to believe it is in the bellhousing like @z31freakify said. Either that or it was bouncing around in the cup of a piston before the right moment where it embedded itself into the top of the piston and and is now hammering the head.
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
Look behind water pump pulley with a magnet on a stick.
I still don’t think that bolt can fit through the valve. I’ll see if i can replicate this scenario with a loose head. The worst case scenario would be bolt fell in and held valve open. I think this would be more obvious (like banging hammers together) and you’d feel/hear it when rotating engine by hand.
I still don’t think that bolt can fit through the valve. I’ll see if i can replicate this scenario with a loose head. The worst case scenario would be bolt fell in and held valve open. I think this would be more obvious (like banging hammers together) and you’d feel/hear it when rotating engine by hand.
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,354
Likes: 5,946
From: Lake Hartwell, GA
Another thought is to remove the IDM relay or disconnect the 42 pin harness and use the starter to try and narrow down the location with the help of a friend or a starter switch.
Definitely in/around the engine somewhere though and not on the floor. Sorry for your trouble and we are all hopeful that it is someplace that is easily fixed.
I have to say, I probably would have said a few colorful words and closed the door a bit harder if that had been me in the video.
Keep us updated.
Definitely in/around the engine somewhere though and not on the floor. Sorry for your trouble and we are all hopeful that it is someplace that is easily fixed.
I have to say, I probably would have said a few colorful words and closed the door a bit harder if that had been me in the video.
Keep us updated.
Cross-Country
Joined: Feb 2021
Posts: 61
Likes: 16
From: Carrollton, OH
Look behind water pump pulley with a magnet on a stick.
I still don’t think that bolt can fit through the valve. I’ll see if i can replicate this scenario with a loose head. The worst case scenario would be bolt fell in and held valve open. I think this would be more obvious (like banging hammers together) and you’d feel/hear it when rotating engine by hand.
I still don’t think that bolt can fit through the valve. I’ll see if i can replicate this scenario with a loose head. The worst case scenario would be bolt fell in and held valve open. I think this would be more obvious (like banging hammers together) and you’d feel/hear it when rotating engine by hand.
Mountain Pass
Joined: Jun 2017
Posts: 156
Likes: 2
You might consider pulling VCs and trying to look through the glow plug holes if you can figure out a way to look in there. Not sure how big your endoscope is but it seems possible that the bolt could be wedged in the piston bowl and just lightly contacting the head.
Thread Starter
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Mountain Pass
Joined: Jul 2020
Posts: 107
Likes: 8
From: North California
How does one go about looking in the bell housing?
I'll have a look behind the water pump pulley. Thank you everyone. Needless to say this sucks.
I'll have a look behind the water pump pulley. Thank you everyone. Needless to say this sucks.
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Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
Ive seen broken GP cause CARNAGE and it is a fraction of the size of this bolt.
The worst case scenario here is likely bolt holds valve open and piston hits valve. Even if bolt made it to combustion chamber, these options would be more than a ‘ticking’ noise.
Im going to put these parts together (head/bolt) so we can see what it looks like.
Meanwhile, I hope we can find a reason for the noise on the rotating parts on front of engine.
Thread Starter
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Mountain Pass
Joined: Jul 2020
Posts: 107
Likes: 8
From: North California
Pretty sure valve doesn’t open enough to let this bolt pass through. Even if this happened the bolt would be ejected from bowl and there is NOT room between piston and head for the bolt.
Ive seen broken GP cause CARNAGE and it is a fraction of the size of this bolt.
The worst case scenario here is likely bolt holds valve open and piston hits valve. Even if bolt made it to combustion chamber, these options would be more than a ‘ticking’ noise.
Im going to put these parts together (head/bolt) so we can see what it looks like.
Meanwhile, I hope we can find a reason for the noise on the rotating parts on front of engine.
Ive seen broken GP cause CARNAGE and it is a fraction of the size of this bolt.
The worst case scenario here is likely bolt holds valve open and piston hits valve. Even if bolt made it to combustion chamber, these options would be more than a ‘ticking’ noise.
Im going to put these parts together (head/bolt) so we can see what it looks like.
Meanwhile, I hope we can find a reason for the noise on the rotating parts on front of engine.
I went back in and had a look at the fly wheel, didn't see anything, no bolt, no shavings, no missing teeth, nada. So I scooted up to the front to have another look at the water pump wheel and couldn't see anything. So I decided to turn the engine over by hand again and see if I could hear it tinking around in there. But after a couple turns, I hit a hard stop. I don't know what that means or what I should do next.
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
I don’t have an easy way to measure lift, but from here I could not push the bolt through the opening. More importantly, I could easily fish it out with a magnet even after messing with it using a heavy copper wire trying to fish it through the valve.
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
Man, thank you so much for your help. Really above and beyond. I really appreciate it.
I went back in and had a look at the fly wheel, didn't see anything, no bolt, no shavings, no missing teeth, nada. So I scooted up to the front to have another look at the water pump wheel and couldn't see anything. So I decided to turn the engine over by hand again and see if I could hear it tinking around in there. But after a couple turns, I hit a hard stop. I don't know what that means or what I should do next.
I went back in and had a look at the fly wheel, didn't see anything, no bolt, no shavings, no missing teeth, nada. So I scooted up to the front to have another look at the water pump wheel and couldn't see anything. So I decided to turn the engine over by hand again and see if I could hear it tinking around in there. But after a couple turns, I hit a hard stop. I don't know what that means or what I should do next.
Pull valve covers and look for a loose pushrod. This could indicate valve is stuck open.