Zero compression on cylinder 6
Laughing Gas
Joined: Aug 2020
Posts: 821
Likes: 292
From: Pelham Alabama
Well the way I read all this, in my opinion Bronco638 gave you the best advice so far. It is a pretty simple test to do.
Like he said, you will be able to hear where the air is coming out. either the ehhaust, carb, or oil breather,
Like he said, you will be able to hear where the air is coming out. either the ehhaust, carb, or oil breather,
Laughing Gas
Joined: Sep 2016
Posts: 774
Likes: 104
From: Elk Grove Village, IL
If you want to spend money on a borescope, that's cool, they're neat to have. However, it may not be able to show you a burned valve or a bad seat or wasted rings. Then, you'll be back at Square One.
Laughing Gas
Joined: Aug 2020
Posts: 821
Likes: 292
From: Pelham Alabama
Hey Dcurre1
We never heard back as to what the outcome was.
Did you do a leakdown test
Did you pull the head,
Did you find the problem and fix it
Or are you still driving around on 5 cyls.
It is always nice to read the follow up as to what the problem was others later on will maybe have an idea what to look for..
We never heard back as to what the outcome was.
Did you do a leakdown test
Did you pull the head,
Did you find the problem and fix it
Or are you still driving around on 5 cyls.
It is always nice to read the follow up as to what the problem was others later on will maybe have an idea what to look for..
Thread Starter
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Mountain Pass
Joined: Sep 2020
Posts: 167
Likes: 4
Doing some work today on it. About to pull the head. My mechanic has a rebuilt 302 and an old torn down 300 so now I have a couple options. If the price is right I’m considering the 302. Will update you soon.
Moderator
Joined: Dec 2007
Posts: 7,987
Likes: 104
From: Boise, Idaho
No, sorry. I reread my post and could see how that was confusing.
I had damaged rings from the timing being too far advanced. It was firing while the piston was still going up. Quite a bit of damage, but I still had a small amount of compression.
The pictures I supplied were just examples of what it takes to have zero compression. If all of the parts are moving as they should, and your compression is zero, there's more than likely a hole it's going out of.
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