Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 1990 Celica suddenly very loud engine and low RPM / code 25 › Reply To: 1990 Celica suddenly very loud engine and low RPM / code 25 November 19, 2020 at 3:36 pm #987129 Paul JewellParticipant Oh also I pulled all of the spark plugs and 3/4 of them are visibly wet with fuel and smell like gas.