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Rotate crankshaft bolt until piston 1 is top of or peak of it stroke.of course with spark plug 1 out of socket with something like a screwdriver that can reach to piston.
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pull out number 1 plug and put a straw or soft object in hole. turn engine by hand on front crank. when the straw or similar is on the very top, just before it goes down ! this is top dead center, then put in distributor with the rotor button facing the number 1 wire on distributor cap, replace number 1 plug and adjust the distributor, buy turning it after it is installed in vehicle.and vehicle is running. if you do not know where number 1 plug is. call the auto parts store. they should be able to tell you. auto-zone etc. good-day !
If the wires are still in the distributer, AND, if you have a stock intake manifold, the firing order is on the manifold. If it's a V-8, the number 1, 3, 5, & 7 plugs are on the drivers side of the engine. The number 2, 4, 6, & 8 plugs are on the passenger side. The number 1 plug wire can be located by looking at the distributer from the front of the engine and visually looking between the distributer and the number 1 plug. Visualize the distributer as a clock. The number one position should be located between 4 and 5 o'clock and should have the longest wire of those on that side of the distributer.
If the wires have been pulled from the distributer, then, then, remove the rotor cap, turn the engine over slowly until the rotor is pointing to the number 1 plug. Using the firing order on the intake manifold, starting with number 1, replace the wires going clockwise around the distributer.
You need to determin which direction the rotor button turns when the engine is running. Take the cap off and get someone to bump the starter . Watch the rotor. If it turns counter clockwise the fireing order will follow its order counter clockwise on the distributer .In other words # 1 wire on the distributer goes to # 1 spark plug. Then the next wire counting counterclockwise goes to # 3 plug . Follow the firing around the distributer for all the wires. counter clockwise is the oppisit to the rotation of the hands on a clock .
take the spark plug out of the #1 cylinder and turn the engine by hand until the piston is at the top dead center of its stroke (put a screw driver in the hole and you should be able to tell when its all the way up). now pull the cap off the distributer the rotor should be pointing at the #1 cylinder wire. if not then the distributer is in the wrong possition. remove the distributer and point the rotor in the correct possition(#1 cylinder) and place the distributer back in.also if this is a used engine replace the cap,rotor plugs and wires.the truck should start. Hope this helps you out.
you didn't say if you have the straight 6 or v 6.But i'll give the order for both.
The 4.9L straight 6 is 1-5-3-6-2-4----------- distributor rotor turning clockwise, and #1 plug is the first plug.
On the 3.0 and 4.2 V6 engines is 1-4-2-5-3-6-------#1 plug is the first plug on driver side---- facing engine.
remove and plug vacume line on the distributer and find timing specs on the motor in the vehicle using timing light hook transducer cable to no# 1 cylinder set the idle to manufacturers specs make shure motor is warmed up to operating temp now point thr timing light at the timing plate on crankshaft pulley start the engine and watch for the mark on the harmonic pulley see where it is at when running now if the mark is not lining up with sugested degrees from manufacturer then u must loosen bolt on distributer only loosen 1/4 turn now rotate distributer clockwise or counterclockwise this will make the mark on the harmonic ballancer allign with manufactures required timing specs after aligning marks tighten distributer and unplug distributer vacume line and plug it back into distributer. and test if u need anymore specifics plz read manual carefully good luck
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