Cylinder four misfire

Hi Joe, thanks for replying. I am going to test the compression tomorrow. What would be my diagnosis if I do have bad compression. I do feel the misfire when I'm driving but once I hit a steady 40-50 it goes away. Well, I have been hitting the same cylinder 4 misfire that last six times I test it but today it also now has a cylinder. 1 misfire as well as the 4. What if I don't have bad compression and what if I do?

And my engine light is on but it's not flashing and there are no other codes, just the 2 misfires.

Thanks so much. I will update you tomorrow once I do the tests.

Well, I did not do the compression check but I took the upper Manifold off to change the gasket and first off it was really dirty and corroded bit also it had the little blue ring isolated gaskets inside the holes, but it did not have the large full gasket that separated plastic from metal. Does that matter? Do the blue rings serve as a gasket or does it still need the large gasket as well?

A guy up at AutoZone said I did not have a blown head gasket as I would see it if I did.

Hi Joe, thanks for responding, so I bought a fitting long gasket for it today and installed it. I did not take the o rings off though. Would that cause a problem or would it be okay? About the head gasket, I was told it would cause overheating and some hissing under the hood also if it was bad and I have neither. Is this true? I am mysteriously losing coolant but was told it could be because the gasket missing from the Manifold letting air in or escape. I have no idea what I'm doing, just trying to get rid of the misfire. I am going to drive it around a bit in the morning and see if I can still feel the misfire or now. But if I do, I really don't know what else to try. Could any of the sensors cause misfiring?

Yes, I have no leaks coming from anywhere down at the bottom where my oil pan is, it's leaking from there, but I was told that has nothing to do with the misfires that's a totally different problem. I just have to do an oil change other than that nothing is. I have no leads to have no nothing like physically that I can see now. I know the coolant has to be going somewhere but there's no visual sight of where it's going, and I have no white smoke nothing coming out of my exhaust. I don't even have regular smoke coming out of my exhaust. So, I'm not sure I'm really leaning against the bad head gasket I really don't think it's the bad head gasket because like I mentioned earlier when I'm going between 40 to 60 and I'm running at good speed it runs perfectly it does not run rough it does not idle rough. I just change the upper manifold gasket a few hours ago like I mentioned, and I actually had to wind up going out on a drive anyways tonight and I still feel the misfire when I start my engine light, or anything is not back on yet but usually it takes my car a few days to read enough misfires to channel it. So, I'm not sure where to go next. I understand your way more professional than me on this subject, but I really don't want to have to change a head gasket if that's not my issue that's why I'm looking at other options and I don't have any of the symptoms that come with a blown head gasket at all. So, I'm still not sure where to go that's why I was wondering about the sensors I haven't changed any sensors yet.