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Discussion Starter · #1 ·
Hi all, nice to be here,
well sadly but i have problems with 3.5l 300c 2006.
engine misfires, makes pulsation at idle, i have checked pvc valve but it's good, tried to detect any air leaks with spray but no luck. it just keeps misfiring when engine is hot. looks like all sensors are good. also o2 sensors are replaced recently.
What i have found is that runner valve inside manifold is stuck because of dirt, im unable to open it even with force, can this be a reason why engine misfires at idle? car engine often shuts down at traffic lights, it's so annoying

few hour's ago i have tested compression in all cylinders, it's 170psi.

Speedometer Motor vehicle Gauge Odometer Measuring instrument
Wood Rectangle Font Gas Pattern
 
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