Bought a non-working '02 Liberty, where to start?

[Ocelot]

Have you considered the possibility that you might have a dropped valve into a cylinder? (although this doesn't explain the oil loss)

 

[tenpin3000]

Well I am waiting for the endoscope still, but I would appreciate if gave me some advice as to how to check for a dropped valve, I have not considered that possibility yet to be honest.

Have you considered the possibility that you might have a dropped valve into a cylinder? (although this doesn't explain the oil loss)

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[CactusJacked]

One of the possible scenarios I threw at you earlier was if the timing chain or related went out, and a piston hits a (now out of time) open valve. That can do damage to the valve, the piston, and to the cylinder wall if the valve snaps off.
A dropped valve seat can happen with the 3.7 and 4.7 engines. What happens is the hardened seat comes loose from the head, and it can slip down and wedge the valve open. It's also one of the causes for rocker arms throwing off. You will see if something is out of place when you go scoping around.

 

[tenpin3000]

One of the possible scenarios I threw at you earlier was if the timing chain or related went out, and a piston hits a (now out of time) open valve. That can do damage to the valve, the piston, and to the cylinder wall if the valve snaps off.
A dropped valve seat can happen with the 3.7 and 4.7 engines. What happens is the hardened seat comes loose from the head, and it can slip down and wedge the valve open. It's also one of the causes for rocker arms throwing off. You will see if something is out of place when you go scoping around.

The endoscope is will be delivered shortly according to amazon, hoping for the best :help:

 

[CactusJacked]

The endoscope is will be delivered shortly according to amazon, hoping for the best :help:

What brand did you get? Does it come with a mirror attachment so you can look at the valves and head?

 

[Logan Savage]

Found the exact source of that oil leak yet ?

 

[tenpin3000]

What brand did you get? Does it come with a mirror attachment so you can look at the valves and head?

I got this:

DBPOWER 8.5MM 2M 2MP Cellphone Endoscope for Android System with OTG and UVC Function & Compatible with laptop (USB adapter included)

And no it doesn't have a mirror attachment :favorites68: You guys gotta remember I'm a noob, I don't know these things :help:

 

[uss2defiant]

I got this:

DBPOWER 8.5MM 2M 2MP Cellphone Endoscope for Android System with OTG and UVC Function & Compatible with laptop (USB adapter included)

And no it doesn't have a mirror attachment :favorites68: You guys gotta remember I'm a noob, I don't know these things :help:

I just looked at the amazon listing.
It'll come with a mirror attachment.

 

[tenpin3000]

I'm actually thinking of removing the oil pan, I think its the only way to really be able to see under the engine. I saw in a video after you take out the bolts you can just twist it and pull it out, you think that's an ok way to do it?

Found the exact source of that oil leak yet ?

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[tenpin3000]

Never mind it looks like I would have to lift the engine to get it out the front axle is in the way [emoji26]

Found the exact source of that oil leak yet ?

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[tenpin3000]

Thanks for verifying bro, any tips on how I will know if a valve has dropped with the scope?

I just looked at the amazon listing.
It'll come with a mirror attachment.

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[CactusJacked]

I've been curious to see how well those Android scopes work. Hopefully you'll have some show & tell photos or video?
If a valve dropped, snapped and broke off, that will be obvious.
A loose/dropped valve seat, you want to look for signs of movement or gaps between the seat and head. Have someone turn the engine over while you watch for a valve seat to slide down as the valves open.

 

[tenpin3000]

I'm not sure if its because its my first time, but it seems like my android scope is now stuck in the engine. It seems turning the motor while the scope is inside is not a good idea, and when I tried to turn the opposite way it seemed to go in deeper. So now something for sure is in the engine lol . Anyway, I did manage to take some photos with the scope, make of it what you will, this is from spark plug #+ on the drivers side:

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I've been curious to see how well those Android scopes work. Hopefully you'll have some show & tell photos or video?
If a valve dropped, snapped and broke off, that will be obvious.
A loose/dropped valve seat, you want to look for signs of movement or gaps between the seat and head. Have someone turn the engine over while you watch for a valve seat to slide down as the valves open.

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[Conundrum2006]

What the heck is that? Did the piston self-destruct? There's a weird almost tooth looking thing in the fist two pics.



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[tenpin3000]

Yes I don't know but it looks like a chewed up fan of some sortbut I'm not sure if thats inside the engine or under the vehicle, looking to see what the experts thing, but yes that fan thingy looks pretty bad

What the heck is that? Did the piston self-destruct? There's a weird almost tooth looking thing in the fist two pics.



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[ltd02]

I think the tooth looking things is the expander ring. That piston appears to be completely trashed. Something really let loose. Time to pull the heads and have a real good look.

 

[Conundrum2006]

It looks kind of like a one of the piston rings. There's several on each piston, one kind of looks like tooth thing. IMO it looks shattered in their too. But I'm on my phone squinting.


Edit: this was dropped down the cylinder through the spark plug opening right?

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[tenpin3000]

Can I do that by hand or do i need a machine? Also do i need to remove the engine from the vehicle first?

I think the tooth looking things is the expander ring. That piston appears to be completely trashed. Something really let loose. Time to pull the heads and have a real good look.

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[Conundrum2006]

I think the tooth looking things is the expander ring. That piston appears to be completely trashed. Something really let loose. Time to pull the heads and have a real good look.

Yeah that's what it's called. Fumbling with my thoughts trying to come up with the correct term.

Do you think the block could have survived?
I think the piston rod snaped from the looks, well maybe.


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[tenpin3000]

Yes, dropped through the spark plug hole, if you have any suggestions on how to get it out i am all ears

It looks kind of like a one of the piston rings. There's several on each piston, one kind of looks like tooth thing. IMO it looks shattered in their too. But I'm on my phone squinting.


Edit: this was dropped down the cylinder through the spark plug opening right?

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