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Method of cleaning engine idle valve and crankshaft exhaust pipe
Beverly EFI engine oil vapor from the crankcase exhaust pipe out into the air filter, and then into the intake chamber, the combustion in the engine, you can reduce the direct discharge of oil vapor on the air pollution. As the oil vapor into the intake system, the temperature drops, the oil vapor condensate condensation, the car intake system pollution, such as intake pressure sensor into the oil, fuel pressure regulator dirty, idle rotary valve dirty, dirty vacuum tube Wait. This is a common disease in FK EFI engines. Some taxis burn the engine oil and burn it again and discharge it directly into the atmosphere. Such dehumanizing behavior is wrong. At the same time, this practice is also unfavorable crankcase ventilation. Intake pressure sensor into the oil, the ECU can not get the correct pressure data into the engine intake chamber, it can not give the correct control action, the engine is not working properly. The most obvious phenomenon is easy to turn off the road, idling low, unstable. Replace the imported pressure sensor, to 400 yuan. Idling rotary valve dirty, causing the engine idle speed instability, easy to turn off. The fuel pressure regulator is so dirty that the ECU can not get the difference between the pressure of the fuel and the intake chamber, resulting in a high fuel injection pressure. The excess fuel leads to the strong concentration of the fuel mixture, resulting in poor acceleration, high idle speed and instability. On the engine idle valve, vacuum tube, throttle and crankshaft exhaust pipe cleaning, Beverly TU5JP / K and TU3JP / K EFI engine maintenance, you can do it yourself. Do this DIY work, some common engine failure will not occur, you can also enrich the level of the car, you may wish to try. First, the idle valve cleaning idle valve in the back of the engine, it is a pipe connected to the air filter, the other end connected to the engine intake chamber, is controlled by the double solenoid valve, there are four different flux guide Pass location. When it is on, the engine receives air directly from the idle filter through the idle filter to keep the engine idling. Due to long-term use, it is inevitable fouling generated, resulting in idle valve is not smooth, unstable idle, or turn off the fire. It is recommended to clean once a quarter, you can DIY. Method is as follows: 1, the engine is off, a little cooler, opened the engine cover, hold well. Prepare a carburetor cleaner, plastic sign, good quality paper towels. 2, idle valve in the back of the engine, you should stand on the right wheel side, first unplug the drive line on the idle valve plug, pay attention to the direction of the plug in order to restore the correct. Do not use brute force, first pry the wire clamp, gently pull on the line. 3, Loosen the two socket head cap screws with a hexagonal wrench, remove the idle valve, wash with a carburetor cleaner, and remove the fouling inside with a clean paper towel. The plastic swab can remove the deposits that can not penetrate into your fingers. If there is a skin tiger or compressed air source, blow the idle valve. After cleaning is complete, shake the idle valve and feel whether its cylindrical body is moving freely. If there is stuck phenomenon, indicating that not yet cleaned, the body should be injected detergent, and then shake, repeated several times, until cleaned. 4, in the reverse order to open, keep clean, the idle valve installed, the correct plug in the drive line on the idle valve plug. Start the engine and try. Second, clean the vacuum tube From the engine intake chamber has a diameter of about 10mm rubber tube, connected through a three-way fuel regulator and intake pressure sensor, intake pressure sensor in the engine compartment right front. RPC Freeman, RLC, etc. With the TU3JP / K engine, the vacuum tube passes through a small, white, translucent plastic pot before it enters the pressure sensor, which I think is designed to prevent oil vapor from contaminating the pressure sensor. Do not skip it. Directly connect the pressure sensor. The TU5JP / K engine vacuum tube is directly connected to the pressure sensor, there is no plastic pot of oil deposition, therefore, TU5JP / K engine pressure sensor is more likely to be oil vapor pollution. DIY cleaning is easy, the method is: 1, the vacuum tube are unplugged, with a 80cm long thin wire, hook a suitable size of clean cloth, pulled from the vacuum tube, the oil wipe off. Be careful, do not hurt the rubber tube, cloth fibers can not be left in the pipeline, you can use compressed air blowing. 2, with a carburetor cleaning pressure sensor cleaning, carefully wipe clean with a tissue and small plastic sign. Small white translucent plastic pot can also be removed, wipe clean with a tissue to ensure that the two head of the tube smooth. 3, look at the fuel regulator and vacuum tube connection is polluted, please use paper towels and small plastic sign carefully wipe clean. 4, in accordance with the original connection, keep clean, all the vacuum tube inserted in place, can not leak. 5, start the engine to see if idling is stable. If not stable, the pressure sensor is generally not inserted vacuum tube, or leak or not. Do not be nervous, turn off the fire, carefully check it again, plug it in again. Third, cleaning the throttle due to long-term use, the throttle will also scale, affecting the throttle opening and closing, resulting in the engine can not work properly. It is recommended that when cleaning the air filter, check if there is fouling in the throttle cylinder and, if there is fouling, wash it with a carburetor cleaner. The method is (assuming that the air filter has been taken apart): 1, Loosen the fastening screws of the air filter and the metal clip of the throttle body with a flathead screwdriver to separate the air filter cover from the throttle body. 2, keep the throttle is closed, the carburetor detergent sprayed around the door, and then carefully wipe the paper towel and small plastic sign. 3, hand move back and forth to move the throttle fan * for the disk to see if the throttle is clean, whether to open and close freely. Then the air filter and throttle body connected to receive a bit to ensure that the seal, tighten the metal clamp screw. 4, Note: Do not pull out the automatic transmission throttle position sensor plug, it is in the throttle body, otherwise, you need to use the instrument, the accelerator pedal position reinitialization; Be careful not to carburetor spray to the throttle body Of the air filter seal rubber ring, it will corrode the rubber ring, affecting the sealing. The above-mentioned cleaning throttle body belongs to partial cleaning. To complete cleaning, the throttle cable must be removed, the throttle body is completely removed from the engine intake chamber, and cleaned with a carburetor cleaner. More trouble, it is recommended to repair station to do. Especially automatic, throttle body removed, to use special instruments to initialize the accelerator pedal position, you can not do it yourself. Fourth, the method of cleaning the crankcase exhaust pipe and filter Clean the crankcase exhaust pipe and filter regularly each month, which can reduce the pollution of engine oil exhaust throttle, pressure sensor vacuum tube and gasoline pressure regulator vacuum tube. This regular maintenance, DIY is easy, suggest yourself. Specific * for the method: 1, hot car flameout, to be slightly cooler engine, opened the hood, hold well. 2, to prepare good quality paper towels, and a "carburetor cleaning agent." 3, standing on the left front left side of the cabin, grab the exhaust rubber hose in the left hand, to be close to the air filter. Right hand fist, blow left back. Exhaust rubber tube should be separated from the air filter. The left hand to live the exhaust rubber hose washed, otherwise, the waste oil will flow out, drip into the cabin. 4, took out the exhaust filter, rinse with carburetor cleaning agent, on a clean towel. 5, with a paper towel to the exhaust pipe end of the plastic connector oil clean, the same air filter connector oil clean. 6, the exhaust filter into the exhaust pipe end of the plastic joints, the point of strength, so that the exhaust pipe and air filter good fit