Having problems with rough idle. Was running great, all the sudden idles rough and runs bad til up to speed. Have replaced spark plugs. Would like to know where cap and rotor are located and a site for service manual access. Also where fuel filter is located and any other ideas you might have. Harness has been replaced.

 

which cylinder is running bad?

 

cant tell idling rough

 

spark plug wires looked good. Should I replace coils and plug wires?

 

never keep on replacing parts without confirming the problem first.

first thing is to locate which cylinder got irregular running characteristics. then you concentrate on that one.

ignition wire is just one of the cause. fuel injector and suppressor plug is also a common cause.

to do basic check, you may try pulling the fuel injector connector one by one till you find a cylinder which doesn't react.

after that, we start from there.

 

Thanks walker anyways, Took it in to get it scoped. Not experienced enough to mess with injectors. Figured try the inexpensive route, replace plugs and check the wires, but no luck. Thanks again