Engine charcoal and spark plug bonks

[fishmens67]

View attachment 1716482382

Is that the replacement for rebuild pellets.
I can't remember if it was 2 or 3 pellets per cylinder.
That can would sure make it easier. lol

 

[JDMopar]

In the 2nd pic, it kind of looks like a chunk is broken out of the edge of the piston. Of course, I've never been good at identifying ink blot pics either!

 

[Newbomb Turk]

In the 2nd pic, it kind of looks like a chunk is broken out of the edge of the piston. Of course, I've never been good at identifying ink blot pics either!

That’s what I thought. But the other pictures look like it’s some kind of trash.

 

[Korys_thing]

In the 2nd pic, it kind of looks like a chunk is broken out of the edge of the piston. Of course, I've never been good at identifying ink blot pics either!

Ink blots and magic 8 balls…neither playing nicely with me. I wasn’t able to tell, tried to get a poke and the black oil globs were hardened. Definitely could be coming out from piston damage, no idea.

Hard to tell and eventually ran out of time to experiment. I’m sure I’ll go back and look at some point while I’m waiting to get it back on the road

 

[RustyRatRod]

I've never seen Pennzoil do that, Quaker State, yes, but having said. I worked at an automotive machine shop for awhile when I was 21, we called them Valvoline engines. Some of us forget that we used to have non detergent oil. I have seen carbon build up like that and carbon wax build up like that. I certainly wouldn't waste my time trying to clean that up, it wouldn't even cross my mind. I would overhaul it, not 318 it.

I haven't forgotten. I still use non detergent oil. So should anyone who runs a flat tappet camshaft. Either low or non detergent.

 

[RustyRatRod]

Is the engine back running? If so, run it at high idle and revving it higher and slowly dribble a bottle of water through the carburetor. That will break up those carbon chunks in that cylinder. You can also use seafoam. It will smoke the neighborhood out but that will probably fix it.

 

[LO23M8B]

First thing I would do is check the valve lash on that cylinder.