Name is jay my 92 sc400 started miss fireing one night it has 180000 mile on it its miss fires while idleing and while driveing. Iv changes spark plugs n ignitions coils and still miss fireing. Iv read a lot on here and my next check is the timing. Maybe i jumped my timing belt? I do drive the car hard. Super hard honestly. So any info can help thank you


... Moving to the right Forum ... Salim

 

put a timing light on it and see?
you can also use a vacuum gauge to see if its out of timing.
10 bucks at harbor f for vacuum tester.
the forgotten vacuum tester can test for lots of issues and its cheap.