I would do leak down test. Everytime I had a plug mess up like that I had to pull the heads & replace a valve or 2, Parts have to go somewhere. You may also need a piston. Sorry for bad news.

I had to buy a new compression tester. I don't have a leakdown tester, but a compression test should tell some tails. I'm going out to do it now.

Well the bad news is the compression came out like this.

1 - 172
3 - 60 - had previous missing electrode, one lifter a little tight
5 - 70 - One lifter a little tight (test after loosening)
7 - 165

2 - 155
4 - 105 - Something is wrong here.
6 - 0 - Missing electrode this time. Pulled rockers and smacked valves with soft faced hammer. They sound like they are seating just fine. Still no compression with rockers off. Ventilated piston I would presume.

8 - 150

I am tearing down now. boo hoo....

And this was the new motor.

Did you get that sinking feeling as you were doing test? I am so gun shy that I pull all the plugs after every time I go out. The last 2 times I had messed up plugs I did test & then started tearing down motor.

One word...Detonation

TurboJack, Yes, I did. Especially since #3 was the second one I tested. I just about have the heads off.

Detonation!!!!!!

Valves closed and still 0 compression.Might as well just pull the motor.You can pull the heads off easier with it on a stand because it sure sounds like you're gonna be needing some pistons.

I don't want to wait that long. I want to know now!!!

Could I get some fries with that too?

10 more minutes and I should be able to post some pics.

Dave F, Do you really think I need 6 to 8 psi? It does have pressure regulators but I haven't messed with them.

Here is the latest pic.

The winner is John B

This accounts for #6 cylinder

Detonation is more than likely the culprit.

Thank's to all that have responded.

Now it's off to pull the other head and check my jets!

It's alot easier to pull the motor with the heads off. Putting it back in might be another story.