Symptom: Audi five-cylinder 2.0 engine idle speed fluctuated, difficult to start, turn off for no reason. This is a mechanical one electronic hybrid control of jet engines, through a number of garages on the injection system and ignition system adjustments, cleaning is not effective.
Causes Check: systematic checks. First, measure the system's fuel pressure, after starting to reach 0.6MPa, 10min after flameout, the residual pressure of not less than 0.32MPa, description fuel pump, accumulator and pressure regulator properly, injectors not relief. According to the car idling with live fire, symptoms of suspected high-speed vacuum intake system leakage phenomenon, then remove nec pro57 benz key programmer the nozzle and nozzle holder, check the degree of aging of each apron, the replacement of some of the apron However, after loading the fault persists. Check the idle stabilization valve and its control circuit, plug valve drive current at idle stability to meet the requirements, it still does not use the new stable valve replacement. With the ignition system tester VAG1767 detect and adjust the ignition timing to BTDC10 °, found just transferred to idle speed 1000r / min or less on easy to turn off, and even when idling in 1000r / min or so, the distributor shall adjust at CO screw transferred very concentrated level, then the engine regularly breathe, feeling very much like a leak place. Carefully check the crankcase ventilation system piping and air conditioning throughout the vacuum lines were not unusual, when repair work basically an impasse, because nowhere has already started to be investigated. Are desperately around observation, found the car's air conditioning obd2 news compressor to adjust frame grazing traces Department has apparently been protruding obstacle collision. Further examination revealed compressor bracket has activities and traces of oil near tainted.
Originally, Audi five-cylinder 2.2L engine 2.OL and due to the special structure of the crankcase ventilation system, as long as a portion of the crankcase and external communication, such as adding oil cap or dipstick is unplugged, idling unstable or even turn off immediately, while this is due to hit the compressor, resulting in compressor screw holes fixed together along with cast-iron cylinder block knocked off, resulting in the crankcase and external communication.
http://digiprog-3.weebly.com/
No comments:
Post a Comment