The missing tooth will be of no consequence as the rest ot the teeth in contact with the chain will always be correct
code p 0306 refers to cylinder 6 misfire detected ====causes ---engine mechanical fault ( could be a loose valve seat insert)---wiring---ignition/ fuel system---injector (blocked tip position it somewhere else and see if the fault moves to the new position)--- ECT/MAF sensor ---ECM
a timing chain problem will not show as a particular cylinder as it drives for all cylinders
SOURCE: ck.eng. light blinking, running sluggish.auto zone
Sensors. Start checking the related sensors to your trouble codes. Most likely on of the primary sensors. Oxygen, Intake, Exhaust.
SOURCE: vehicle came in for check
A misfire at idle that smooths out at cruise is ALMOST ALWAYS caused by a vacuum leak. Take a hard look at your fuel trims at idle. If the Bank 2 Long Term Fuel Trim is more than + a couple points higher than the Bank 1 trim, your problem is most likely a vacuum leak. If the Fuel Trims even-out while holding the engine at 2000 RPM for about 20 seconds, then a vacuum leak is DEFINITELY your problem. I would suspect a leaking lower intake gasket leak because an upper plenum leak will normally affect all cylinders.
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