6.9 diesel engine seized need help

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Dec 20, 2023 | 09:45 AM

#31

scirocc0

7th Gear

Joined: Oct 2023

Posts: 7

Likes: 2

Haha my kid (16, verrrrrrry interested in this truck) tried a whole lot last night. He was out there freezing his butt off for a few hours getting the injector lines back on and fitting the new return lines. Never have I seen that kid so motivated in the face of adversity and weather!

Took pity after a while and set up a torpedo heater, but didn't remind him to bleed the lines. So it didn't get started, but it cranks nicely and the 120v battery charger is confirmed to work lol. He cracked the lines finally and it's bubbling at the injectors, but we left it there because of time.

I will let it sit until he's back so he can be the one to finally start it, don't wanna take that away from him.

QUESTION: If the cylinders are damaged from the water, what are the likely signs? Just excessive crankcase pressure/blowby? In the even this seems severe, is compression testing useful?

Dec 20, 2023 | 10:55 AM

#32

Olds64

Logistics Pro

Joined: Jun 2017

Posts: 3,992

Likes: 518

From: Edmond, OK

Depending on the amount of damage to the cylinders you might not be able to start it. If it does start you'll likely have a lot of blowby since the rings and cylinders are both damaged.

A compression test is a good idea regardless of if you can start it or not.

https://www.harborfreight.com/master...kit-57588.html