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Hello everybody 

 

i have poursche cayenne GTS 2009 with misfire some times and sometimes smooth 

i check OBD its give 3 code 

 

p1377 valve lift control cyl 7 small 

 

P0307 cyl 7 misfire detected 

 

44FA please refer to vehicle  service manual 

 

i change the both valvetronic sensor in bank 1 and bank 2 

 

Comp test for all cyl witch all ok 

 

i inspect the wires connectors hoses all in good condition 

 

i clean the injectors 

 

still the issues is there some time its on cyl 7 then some time on cyl 8 so its not stay in 1 area 

 

and some time i drive  the car for a week with no trouble code 

 

so can any one help on this 

D475E6B4-F175-4480-A82F-D6D0DFC4D537.jpeg

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