Car help
Alright guys I need help, so let me lay out the foundation of my problem. So I have an 2006 Toyota Corolla base edition that I bought back in February and it’s been solid for the time being however over time I noticed it started to stutter & was having trouble starting until it eventually wouldn’t anymore & so I ended up getting a brand new starter and replacing it myself and then it was up and running again no problem. Though after a few days it started to stutter again while starting it , it hasn’t shut off completely like it did before and when I did research I saw that maybe it was time to replace my intake manifold gasket (which I didn’t get to yet) ,so today it started to rumble & thud slightly while in idle and when it goes into drive it gets significantly worse. I believe obviously it’s misfiring however my spark plugs look to begin great shape so other than the manifold gasket issue I’m kind of stuck on my diagnosis, I’m pretty mechanically inclined but not an expert by any means so please any advice would help as I’ve researched for a few hours and can’t seem to come up with a clear answer , I appreciate yall and GOD BLESS !