there are going to be timing marks don't quess at this point. Either the new gears will have circles or a line, also look thru the gear is there anything on the head to align with. Also check out the belt tensioner is it in good shape. I had a guy swap new gears but thru the belt shortly after because he never changed the tensioner. Check inside the box of thew new gears they should give you an idea where the marks are
The marks are on the timing belt cover,and on the pulley for the crank.
Follow the timing belt clockwise it is the first or second pulley after the crank pulley under the timing cover
there are no timing marks on the cam shaft pullys you have to remove the rocker cover and fit a locking tool to the rear of the cams the crank has a mark on the fan belt pully to the cover at about 5 oclock
Look on the timing belt cover you will see a notch on the top, this is where you line the camshaft pully mark. Now, on the crank pully you will find another notch on the pully it's self. Now at the 1 o'clock posistion on the timing cover above the crank pully you will find a little plastic "tit" about 1/2" long, line the crank pully with this and install the belt. Note: on my car this bottom notice was actually right on one of arms mounting the starter. its still in the 1 oclock posistion but wasnt on the plastic cover. Great thanks for these nots helped me alot
The crank gear should be in the 12: oclock position & the cam gear should be in the 6: oclock position facing each other this is top dead center on compression stroke.
on a kia sorento 3.5 liter the crank timing mark is on the front of the crank timing gear in is dot shaped punch on the face of the gear with a corresponding mark at 2 oclock on the block clean the gear you should see it
The crank gear dot is at 12 oclock when #1 piston is at TDC, Top dead center. Cam gear dot is at 6 oclock. Both dots should be in a stright line over top of each other.
cam timing marks are on the timing gears inside the timing case cover the crank timing gears are located on the harmonic balance (big pulley wheel at bottom of engine on front of crank)
IT IS ON THE PASNGER SIDE . UNDER THE BOTTOM OF TRUCK ON THE SIDE OF THE TIMING COVER. YOU WILL SEE IT.THE CRANK PULLY , BALANCER, WILL BE IN LINE WITH IT. LOOK FOR A PIGTAIL GOING INTO THE SIDE OF THE TIMING COVER. IT IS ON THE PASNGER SIDE . UNDER THE BOTTOM OF TRUCK ON THE SIDE OF THE TIMING COVER. YOU WILL SEE IT.THE CRANK PULLY , BALANCER, WILL BE IN LINE WITH IT. LOOK FOR A PIGTAIL GOING INTO THE SIDE OF THE TIMING COVER. IT IS ON THE PASNGER SIDE . UNDER THE BOTTOM OF TRUCK ON THE SIDE OF THE TIMING COVER. YOU WILL SEE IT.THE CRANK PULLY , BALANCER, WILL BE IN LINE WITH IT. LOOK FOR A PIGTAIL GOING INTO THE SIDE OF THE TIMING COVER.
It's behind the timing belt cover on top of the crank pulley.
The timing marks are on the timing cover for the crank pulley, and on the cyl head for the cam ...
It is on the front of the crank shaft and under the timing belt cover. You have to remove the crank pulley and all the belts and then the lower timing cover. It is not a job for a beginner.from : http://repairpal.com/crankshaft-sensor-569