I need a vacuum line diagram for a 1982 ford f 150 6 cylinder 4.9 liter truck.

Click on link to view vacuum diagrams.

Hi, the firing order is ( 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 )

The distributor rotor turns COUNTERCLOCKWISE
The marked # 1 position on the distributor cap faces to the REAR and slightly towards the drivers side, the engine cylinders spark plug locations are numbered.





The wiring diagram....

The firing order is ( 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 )

The distributor rotor turns COUNTERCLOCKWISE

The marked # 1 position on the distrubutor cap faces to the REAR and slightly towards the drivers side

The engine cylinders / spark plug locations are numbered :

firewall

4 - 8

3 - 7

2 - 6

1 - 5

front

If someone has altered the disstributer, pull #1 plug, put finger over hole, turn engine over until compression on that cyl, line up timing marks (ball park only) and rotor will be pointing at the correct terminal for #1 cylinder plug wire connection, in the cap.

their is a diagram under the hood its the best i have found thus far

i Kan get u the picture of my diagram same make same model same carborater but only one of the lines is nessary so far as i kan see i just plug the other ones up

1-4-2-5-3-6
Now you need to know which cylinder is which. If you stand at the front of the truck looking at the engine, the number 1 cylinder is on the left closest to you. The left bank has cylinders 1-3-5 and the right bank has 2-4-6. So number 1 is at the left front and number 6 is at the right rear.

If this is a 2004 Heritage ( old body style ) and the transfer case is known to lock in ( check with truck jacked up, shift into 4WD and try to turn front drive shaft ), the next item to look at is the vacuum disconnect motor for the front axle. This is on the front axle, and will move when shifted into 4WD



It is item #10, on this parts diagram

If you do not have movement in this, check the vacuum lines with a vacuum pressure gauge, to see if vacuum is being applied ( Pink line is 2WD w/ vacuum is operation, Blue line is 4WD w/ vacuum operation ). If no vacuum at the lines, check them back to the vacuum shift solenoids

Visit the autozone.com website and register the truck information. It's free and will give you access to an online repair manual for the truck. The vacuum diagrams should be available there. It's a pretty handy resource for automotive maintenance projects. Hope this helped and best wishes.

On the straight 4.9 liter 6 cylinder the firing order is 1-5-3-6-2-4 The cylinder from the radiator to the firewall is 1-2-3-4-5-6  The distributor rotates clock wise, (to the right) #1 is towards the brake booster and going clockwise to the right is #5 Ect. 
On the 6.6 liter V8 the firing order is 1-3-7-2-6-5-4-8 The cylinder on the passenger side radiator to firewall 1-2-3-4 The cylinder on the drivers side radiator to the firewall 5-6-7-8 The distributor rotates anti clockwise (to the left) #1 is towards the cylinder #5 going anti clockwise #3 to the left and towards cylinder #1 Ect.
Good luck and keep me posted, be glad to help.