Corolla variant 1.3cc or 1.6 , year ? Mileage, ? for how long you driving it ? any history with CNG ?
- exhaust has lot of carbon. Oil reduces , under powered plus the knocking part -- my cultus did that in the past and I got the the rings replaced.
Water throwing in the morning that only happens at cold start...... when it get hot the compression falls and the engine not able to control the blast b/w the valves and pistons, oil makes it way out through the loose rings exits and join the exhaust pipe polluting the environment more.