hi i have a 05 opel cobo 1.3cdti van and have a problem in take off and low gears with dullness and lack of power for a split second(s). also at times a splutering in low gears and i have changed the air mass sensor. the local garage have had the same probs but no solution!!!! its only doing low 40s in economy any answers!!!
2005 opel combo 1.3cdti diesel
have replaced air flow sensor. have checked injectors ane relay. air filter new. it wont start on first turn of key ither but not lazy!! it has been suggested to change starter motor 4 that problem. just spluters in low gear never in high gear at 60mph only 15-35mph in built up traffic
HelloI would first change the fuel filter and treat it to a tank of good quality fuel ( not the supermarket stuff).I would also check the condition of intake hoses after the turbo, for any splits, leaks or otherwise loose clips.If neither of these helps then I would reccommend getting a local diesel injection specialist involved to measure the fuel pressure ( this needs specialist kit as the pressures are very high) this will hopefully point to if the pump is delivering low pressure or a faulty injector.
the injectors were checked and the filters are new mechanic checked hoses ect any other theory????
HelloOK how where the injectors checked?Have they been on a injector flow test machine to confirm spray pattern and flow level?Also has a measurement of fuel pressure been made at the fuel rail with the engine running?Also worth measuring the boost pressure inside the inlet manifold , this will require a gauge to be fitted if only temporarily and the car taken for a drive or put on rollers.Has the ECU been checked for any fault codes?
BEng hons Mech engineering, in auto industry 22 years