Toyota Repair: toyota misfireing, toyota sr5, spark plugs


Question
1989 toyota sr5 extra cab 4wd 2.4l efi pickup
auto trans 140000 miles
car runs rough and looses power
gets worse as vehicle warms up


Answer
This could be caused by something simple like a bad spark plug to a leaking cylinder(loss of compression)I would recommend having the engine compression checked first to make sure it doesn't have a major problem, then tune up parts can be checked and replaced as necessary, like spark plugs, wires, cap rotor.