Question about 2002 Ford Ranger Regular Cab

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2003 ranger 3.0 po306 #6 hole misfire. did all the major diagnose comp,ign coil checked good, wires great, injector pulse good ,no vac leaks,no other codes triggerd, so i started thinking about the timing systems and triggers . all in great shape. ecept for one curiouse thing i work in auto parts so i orderd a balancer to look at the position of the crank sprocket. it seems it has a intentional cog missing in the sprocket. but what i noticed is that it is positioned at btc on my vehical and dtc on the new one, this is probably the problem could somone tell why it wpoldnt be?

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  • Ford Master
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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

Posted on Apr 23, 2017

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6ya6ya
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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: misfire

Check your cam. position sensor

Posted on Jul 25, 2009

Milrite
  • 79 Answers

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.

Posted on Jan 18, 2010

dttech
  • 4803 Answers

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.

Posted on Jan 30, 2011

  • 844 Answers

SOURCE: replaced coils, plugs, wires, crank

check intake gasket for leak.

Posted on Feb 03, 2011

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