What is the reason why jeep Guide is not easy to start in cold weather?

The reasons are probably as follows: 1, the poor low-temperature fluidity of throttle is related to or affects the engine oil; 2. The throttle has not been cleaned for more than 7,500 kilometers, the throttle is too dirty, and there is too much carbon deposited in the air inlet, fuel injector and intake valve. Uneven fuel quality and congested urban road conditions are the reasons for carbon deposition. The gasoline sprayed by the injector will be absorbed by a large amount of carbon deposits during cold start. The mixture is too thin during cold start, which makes it difficult to start. The oil path over 34,000 kilometers is not cleaned, and the oil pipe of the oil pump is too dirty. 4. The battery has not been replaced for more than 3 years, resulting in low cold start voltage. The spark plug has not been changed for more than 30,000 kilometers. 6. The electrode is in poor contact with the water temperature sensor. 7. It is difficult to start the engine oil that is not suitable for local low temperature viscosity. In addition to checking the above items, it is also necessary to pay attention to 1 and 30. Because the ignition switch is in the self-checking state, the oil circuit system will automatically supply oil once, so that enough atomized gasoline will be started after two or three trips.