96 DX problem @ low RPM's

[slambed_civic]

A friend of mine has a 96 DX coupe. at low RPMs is bucks a lot. it acts like its running on 2 or 3 cylinders. any ideas about what this might be? any help would be appreciated. thanks in advance

 

[SiGSR]

Did he change the timing belt or taken it off recently?

 

[steve98ex]

Could be alot of things, spark plugs, wires, dirty injectors, dirty fuel filter...