I just changed out my lower intake gaskets and now it sounds like I have a miss. I did get a checj engine light at first but it did go out. Its not that bad but I didnt have this problem before I did the gaskets. Anyone have similar problems? I did do a search but seems like most people have no start problems after changing the gaskets. Any help is appreciated

Forgot, it is a 99 blazer 4wd

Looks like I got the distributor off a bit. Its giving a p0300 code for misfire

That
s what it is im sure, same thing happened to me when i changed them, its a pain to get back in there just right.

I have read that if you did get it a tooth off it will also shoot another code with the p0300.