I have a 2000 honda civic lx sedan.
Been having some issues starting the car here an there, so i decided to change the fuel injectors.
after i did i tryed starting the car 3 times.
First 2 times didnt wana fire up.
3rd time it started barely an was rough, then died
4th time i got ot started an the rpms looked good but it shook a lil an the check engine light started flashing .i turned off the car an checked the muffler cuz it sounded like it was knocking against the bumper hard. It had burnt thru an melted part of the bumper it was touching.

I changed these things before the fuel injectors.
-plugs
-wires
-distrubtor cap an button
-headers
-upstream o2
-radiator cap an top hose
-valve cover gasket
-thermostat
-coil pack