I think my wife broke my truck

[Mountain Matt]

Hi, I'm new to the site. I have a 95 F-250 200,000 miles ran great until today.

My wife forgot there was a anti-theft button to push before starter will work. She cycled the glow plugs 7-9 times before I showed up. As soon as I started it, it shut down and then would only run really rough after that. Check eng light was on.
CPS is new, I pulled the uvch plugs out and the passenger side/ both plugs were burnt at the outside terminals. Driver side plugs look fine.
All I know to do is replace gasket and plugs. Is there any checks I should do before I start replacing parts? Should I go ahead and do both sides?

Thanks for any suggestions

[Fordman247365]

I would do both, that way you know whats what for wiring

[creekfreak]

Fwiw, I just got a great deal on valve cover gaskets on amazon. Shipping was slow but it was $107 with shipping for a pair of gaskets and 4 pigtails.
Good luck.