2011 Dodge Avenger V6 3.5 - vehicle lost power and shut down

tman652tman652 Member Posts: 2
edited October 2017 in Dodge
I own 2011 Dodge Avenger V6 the vehicle has 140 000 KM on it the vehicle lost power and shut down. Check engine light came on code was reading cylinder # 1 misfire changed all the spark   plugs  and the #1 boot. The problem went away. Then it came back again. This time code was general misfire. When I checked oil it was down 1L. Topped up checked the pressure.  on all the pistons the are holding good. Did oil change cleaned the valves make sure their is no carbon on them still same problem.   Took the car to dodge did computer update no error codes seams fine drove for 100 km  seems to be ok. Then I started the car 3 hous later same problem stalling rpm jumping from 500 to 1000 running rough please help. 
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