So I got my ls and it was fine but the idiot I got it from didn't tighten hose clamp so hose blew off and car lost all coolant and barely over heated the second I smelt and seen te,p go up it was off and I was burping the coolant system car had code for knock sensor fixed that then it says cyl 4 misfire and evap and or vaccume leak fixed vaccum issue and evap code and car ran good but still had a little bit of a misfire my temp sensor want out and now the car won't start in morning unless u try for 30+ minutes it doesn't want to idle has absolutely no power a civic is faster rn lmao idk what to do did it blow a head gasket from over heating for 2 minutes if that or did I over look so,ething stupid someone please help me out car is sla,,ed and I have no wire issue in fenders but maybe under car someome help me

 

If I was you I would start off with a compression test on all cylinders and then go from there. It would be a good data point to start from.

 

would tell you if it was a blown head gasket. Might not be fully blown enough to exhibit the usual signs like smoke out the exhaust, but if it is starting to go, that'll let you know