My problem is with a 1982 crossfire model. I am repoacing the spark plugs. The front 2 on each side were rather easy to replace but the rear plugs are very difficult to reach. Is it because of a heat shield that must be removed to replace the plugs or should I do it from underneath the car?

HT lead could be faulty, plug cap etc.

Mitsubishi Montero 3.5 V-6n24 valve

Looking from the front of engine to the rear on the passenger side 1-3-5
Looking from the front of the engine to the rear on the drivers side 2-4-6


The engine has coil over plug with coils only on the drivers side. The spark is shared via spark plug cables to the plugs on the passenger side. So If you are replacing the spark plug cables:

#2 cyl.coil drivers side shares spark with #5 passenger side-
#4 coil drivers side shares spark with #1 passenger side-
#6 coil drivers side shares spark with #3 cylinder passenger side.

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 front bank of plug wire is easy just remove them one at a time and trace them back to the coil pack. making sure you put them back in there clip harness. The rear bank of plug wire is much harder In the shop we have a tool the titls the engine a little foward and allows you to reach in over or around the engine to gain access to the rear bank of spark plug wire . this tool is sold by OTC , Snap on , Matco , Mac or you might try your local parts store to see if they have one for loan or rent . the firing order on your buick is coil nearest the drive side is 1/4 middle coil is 3/6 and the end coil nearest the passanger side is 2/5

passanger side l----l l----l l----l drivers side
2 5 3 6 4 1


front of truck
this is the firing order for a 3.4 v6 vin e

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.

The firing order-------- 1-8-4-3-6-5-7-2
Looking at the engine from the front of car
plug #'s for left side, front to rear,1-3-5-7 #1 plug being the very first one.
plug #'s for right side, front to rear ---- 2-4-6-8.

The COIL PACK TOWERS are numbered : coil----3---4 pack---2---6 plug----1---5 ----------------------------------------------------------------- The engine cylinders / spark plugs are numbered : passenger side , front to rear , 1 , 2 , 3 -----drivers side , front to rear , 4 , 5 , 6 ------------------------------------------------------------------- The spark plug firing order is ( 1 -4 - 2 - 5 - 3 - 6 )

STANDING IN FRONT OF CAR 1 ON DISTRIBUTOR CAP IS ABOUT 5 OCLOCK POSITION.

Sitting in the drivers seat, drivers side is the Left side, passenger side is the Right side.

From the Front of the engine going towards the rear,

Right side: 1, 2, 3, and 4

Left side: 5, 6, 7, and 8.


Front of the engine, RIGHT side coil pack. Two spark plug towers in Front.
Left side is Number 5. Right side is Number 1

Front of the engine, RIGHT side coil pack. Two spark plug towers in Rear.
Left side is Number 3. Right side is Number 6.

Front of the engine, LEFT side coil pack. Two spark plug towers in Front.
Left side is Number 8. Right side is Number 4.

Front of the engine, LEFT side coil pack. Two spark plug towers in Rear.
Left side is Number 2. Right side is Number 7.

The COIL PACK TOWERS are numbered : coil----3---4 pack---2---6 plug----1---5 ----------------------------------------------------------------- The engine cylinders / spark plugs are numbered : passenger side , front to rear , 1 , 2 , 3 -----drivers side , front to rear , 4 , 5 , 6 ------------------------------------------------------------------- The spark plug firing order is ( 1 -4 - 2 - 5 - 3 - 6 )