Engine Diagnostic

[celica2002]

Can anyone help me with an engine problem with my 2002 Celica? The engine makes a popping sound on tick over which can be heard in the induction side and exhaust. The car drives rough at low RPM. I expect the problem is still there higher up the rev range but not noticeable. I have had the engine light on once for misfire on cylinder 3. New coil has had no effect. Erased the light and has not come back although problem persists. I checked for air leaks by spraying carb cleaner around inlet manifold. Did not take any in. Any ideas as it may lead to the financial black hole that is the dealership.

[Karma Supra]

What fuel are you using? :D