My first-time borescope experience!

Joined
Jun 5, 2021
Messages
459
Location
Salt Belt
On last episode...
https://bobistheoilguy.com/forums/t...ston-slap-valve-train-ticking-or-else.384691/

Bought a cheap borescope from Amazon. My intention is to confirm cylinder wall condition so I can rule out piston slap or not. Also use this chance to tighten my spark plugs to correct torque.
So, this is what I found for my 144k Theta II engine...
Cylinder 1

image1.jpeg


image2.jpeg

Can't see anything here as piston is close to TDC.
image3.jpeg

Honestly, got what I paid for, hard to do inspection when your tool is cheap. This scope does not bend well, compared to whatever car care channels on YouTube are using. The lens is too small to capture lights and I can see nothing on cylinder wall. Pretty disappointed to me.
After this I stick the scope in oil port and see if I can get a view under the cover.
image5.jpg

One of the lobe that close to the timing side

image6.jpeg

Probably a lobe for cylinder 2 with valve bucket

Overall pistons have less deposit than I thought, but the concerns are piston 2 & 4 that has part of their edge shining, as well as the reflective cylinder walls. For cylinder walls, would it be this reflective when brand new? I'm worried if these are worn patches. Regarding pistons, not sure why the edges are shining. Ring wash? But oil level doesn't go down. Now more conflict evidence for me to sort out!

How would you rate the condition of this 4-banger under this mileage?
 
Oh, you said your first time and I thought you were scoping a different hole.....

In all seriousness I agree minimal deposits on pistons but can't tell much beyond that
 
By the way, If you are a shooter do not scope the rifle that you believe has an absolutely clean barrel. Those cheap scopes have sold more bore cleaning supplies than anything. It is real hard to resist grabbing the cleaning supplies the first time you look in a barrel you would have sworn was perfectly clean. It is a real education.
 
I hate to say this, but looking at your images, it looks like you have piston to head contact, because of how stamped clean the crown of the piston is.
I believe you have connecting rod bearing issues on that cylinder.
 
I hate to say this, but looking at your images, it looks like you have piston to head contact, because of how stamped clean the crown of the piston is.
I believe you have connecting rod bearing issues on that cylinder.
Thanks. Well if you are talking the two pics where part of each piston is shining clean, that will be piston 2 & 4.
Hyundai dealer basically told me unless it’s undeniably bad knocking or throw a rod, the Korean won’t send new short block in.
Finger crossed.
 
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