Question

So I finally got around to taking her apart. So I started by draining the oil into a pan and I didnt see any shimmer or signs of metal in the oil.. I proceeded to take off the oil pan. All the rods have no play in them. On the top, the only thing I found was a pretty bad exhaust leak on cylinder number 10. My exhaust valves also look kind of burnt all the way to up. Could that little knock that I've been hearing was that exhaust leak on that one cylinder? When the truck was cold it was very noticeable but once up to normal temp it almost went away .

You had mentioned that one of the head gaskets needed to be replaced. Wouldn't that be a reason for the exhaust leak?

6speedquadcab said:

You had mentioned that one of the head gaskets needed to be replaced. Wouldn't that be a reason for the exhaust leak?

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Exhaust and headgaskets are different

SRT2SLOW said:

Exhaust and headgaskets are different

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I get that, but cylinder 10 looks like it's burnt between the block and the head surface where the gasket would be. I'm assuming that's where combustion happens so if there isn't a proper seal, some of that exhaust created after the fact may be leaking through and going out the wrong place.

I've had knocks in the past, they don't go away when it warms up. I'm not sure what issues you were having but from what you described it sounds like you got away with an easy fix. I hope that is it !!

Looks like you had some high cylinder temperatures going on. Are you by chance using a 93 octane tune on California's crappie 91 octane blended gas?

6speedquadcab said:

I get that, but cylinder 10 looks like it's burnt between the block and the head surface where the gasket would be. I'm assuming that's where combustion happens so if there isn't a proper seal, some of that exhaust created after the fact may be leaking through and going out the wrong place.

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Thats just thr gasket material. I cleaned it up already.

MOD(S)QUAD said:

I've had knocks in the past, they don't go away when it warms up. I'm not sure what issues you were having but from what you described it sounds like you got away with an easy fix. I hope that is it !!

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Regardless the bottom into getting built. I just wana find the problem.

Theol55 said:

Looks like you had some high cylinder temperatures going on. Are you by chance using a 93 octane tune on California's crappie 91 octane blended gas?

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It was supposedly a 9 octane tune but it doesn't look like it.