rich5315 Posted April 29, 2017 Posted April 29, 2017 Hi ive a 2.2 hdi c8, when i bought it unknowing to me there were parts missing like the diesel swirl valve and a few bits that adjust the airflow to the engine, i had it in the citroen garage and to make do they opened the valve up so it had constant air, not a good fix but did the trick. Ive recently had it my local garage for another job and somehow they must have closed the air flow valve so the engine isnt responding much. What i want to know is where is this valve so i can manually open it myself? Quote
paul.h Posted April 30, 2017 Posted April 30, 2017 Is it just the swirl valve actuator that has been removed (or just disconnected) or the swirl valve within the cylinder head that has been removed ? At the gear box end of the cylinder head there is a pivoting arm with a ball on the end of it that connects to a plastic cup on the actuator rod. This is from the C5 common problems topic:11. C5 2.2 hdi 136 hp only, swirl plate diaphragm actuator ball cup breaks. Vacuum leak/turbo fault codes (any engine).Located at the left end of the cylinder head. Symptoms may be loss of acceleration, engine management light, increased fuel economy. The plastic ball cup may be replaced on its own (10 mins) or the complete actuator replaced (several hours DIY), about £20 but the cup is not available separately. This topic has a few notes on how to replace the part http://www.citroen-o...ragm#entry40936 There is a diy fix here if not able or want to get the dealer part http://www.citroen-o...-to/#entry82945 I read in Car Mechanics a case where the actuator had a vacuum leak which resulted in the engine management light and limp mode and fault codes for over boost and turbo regulation fault. The slow loss of vacuum reduced it also to the turbo wastegate so turbo boost level dropped, the ecu then increased the boost control duty cycle which then deactivated the swirl control increasing the vacuum boost and tripping the EML/limp mode. These fault codes have also been reported here and it turned out to be a split in the vacuum pipe to the egr valve actuator - so any cause of a vacuum leak should be looked for before touching the turbo. Quote
rich5315 Posted May 1, 2017 Author Posted May 1, 2017 Hi paul the swirl valve and other parts have been removed by someone the dealer quoted £360 to refit the missing parts, I took it there because it was in limp mode all the time, as a quick fix the dealer put a bolt in a peice of tubing to make the vacuum and also had to manually open a valve or something so it increased the airflow to the engine, the assembly that should do this had also been removed. This cured the problem, what i want to know is where i can locate this to open it up again? as it has somehow been closed and the car id very sluggish Quote
paul.h Posted May 1, 2017 Posted May 1, 2017 The swirl valve plates are inside the cylinder head - is it these that have been removed or the actuator ? If just the actuator, the arm that moves the plates will still be sticking outside the end ot the cylinder head at the gear box end. The arm is shown in the attached photo from a C5. it has the ball on the end of it. Quote
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