What is the reason for the Elantra dual-fuel car running 1 10000?

The exhaust pipe is blocked. After removing the exhaust pipe and starting the engine, the engine is no longer stuffy, the power returns to normal and the temperature is not too high. A careful inspection of the exhaust muffler shows that carbon deposit and sludge have blocked more than half of the exhaust passage. Because the exhaust passage is seriously blocked by carbon deposits and sludge, the exhaust gas after combustion in the cylinder can not be fully discharged, that is, the heat generated when the engine is running can not be dissipated well with the exhaust gas, so the engine temperature is easy to be too high; At the same time, poor exhaust will inevitably lead to insufficient air intake, which will lead to insufficient engine power. Clean up the carbon deposit and sludge in the exhaust muffler, and test the machine after cleaning. The original failure will not occur again.