A clogged muffler can.
A bad muffler on a 96 civic could cause loud exhaust noise. The muffler could cause hard starting if it is stopped up.
No a bad muffler shouldn't, but a clogged catalytic converter will.
bad/partially blocked catalytic converter. - kind of a rotton egg smell, right?
a bad bearing will cause it to shake, also a rotar or shocks will do the same.
A fouled plug, bad plug wire or bad coil pack.
Bad catalytic convertor. Egg smell is a dead giveaway.
Bad tires and bad alignment can cause the car to shake at certain speeds.
Your bad muffler might be part of the reason your check engine light comes on. Usually, your bad muffler causes something else to go wrong and that causes your check engine light to come on. Problems cascade.
a bad engine
yes it will has to do with back pressure exhaust from the engine
Maybe the muffler is bad.
Most definitely. Any miss will cause the engine to shake. A vacuum leak will also cause this.