So we replaced the valve cover gasket yesterday, put everything back together and the car won't start. Won't turn over or anything. Full power, it's not the battery, checked all the fuses and relays. Fuel pump is priming. All the grounds that I know of are bare metal to metal. I did lose the fuel pump relay but replaced it with the rear Defog relay. We jumped the starter through the relay and it started.. But idle was pulsing. And still won't start on its own. Any ideas?

 

All the coil pack plugs are tight? How about the cam solenoids and position sensors? What about the hpfp pressure sensor, did you plug that back in?

 

I'd bet another fuse or relay is blown. Did you figure out why you lost the fuel pump relay?

 

Did you just reeplace the gasket or did you powdercoat the valve cover

 

Look at everything you removed. Check the battery if that, the connection to all the coil packs, then other basic stuff.