The most common problem would be a valve lifter not pumping up. Of more concern would be the valve seat in the #4 cylinder going bad. Escorts have had this very common problem for years.
the engine
Could possibly be a bad lifter.
The Taurus could overheat for several reasons. The coolant could be low, the fan might not be operating properly, or the engine could have a stuck thermostat.
The Taurus could overheat for several reasons. The coolant could be low, the fan might not be operating properly, or the engine could have a stuck thermostat.
Try to locate the ticking noise. Is it the engine? Is it ticking when you are driving? When you are sitting still? It could be as simple as a stone stuck in yoru tire, everytime it hits the road it ticks. it could be a lifter in the engine. Try to be more specific as to where and when the ticking happens.
If you have coolant on the top of the engine it could be a leaky thermostat housing or a leaking intake gasket.
another name is smog pump.this could cause light to come on.
dead battery, flooded engine, could be any number of things.
Lifters ticking.
you may have a bent valve
A faulty gas cap could cause the check engine light to come on but it would not cause a rough idle or engine noises. Start with having your local auto parts store read the codes. The codes will help determine why the check engine light is on.
could be a few things, valves need adjustment or if it's a high mileage engine use a heavier engine oil. maybe the engine requires higher octane gas. have some experienced listen to the engine carefully to determine the cause.