Timing and Firing Orders

As said before, this is how a MAN can remember the firing order on a straight 6 engine.... 15 is too young, 36 is past her prime while 24 is just right... (1-5-3-6-2-4)

All engines, with exeption of the five cylinder, have different firing order possibilities. With the straight or v six the other possibilities are 1-2-4-6-5-3 and 1-5-4-6-2-3. But the answer mentioned before is the most common.

I don't know if this will help but try this web page: http://autorepair.about.com/library/firing_orders/bl-fo-3162.htm Good luck.

The firing order is 1, 4, 2, 3

15426378

1 - 3 - 7 - 2 - 6 - 5 - 4 - 8

The distributor rotor turns COUNTERCLOCKWISE

The marked # 1 position on the distributor cap faces towards the REAR

The engine cylinder locations are numbered :

firewall

4 - 8

3 - 7

2 - 6

1 - 5

front of Ford F-350 ( V8 )

1-4-2-5-3-6

All Dodge truck V8's firing order are 1-8-4-3-6-5-7-2.

1 - 5 - 4 - 2 - 6 - 3 - 7 - 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 :

firewall

4 - 8

3 - 7

2 - 6

1 - 5

front

1 8 4 3 6 5 7 2 is the firing order.

Had the mate go throughthe samething, so after a $600 quote from the dealership, I tried it myself.

Anyways, the best thing to do to get some decent work room is to remove the hood. Since it is lightweight and only held in place with an air lift and 6 10mm bolts it is simple to do, though a second set of hands is a big help.

Next, you want to remove the plastic engine cover/heat shield, remove the 4 13mm plastic nuts and slip it off to access the top of the engine.

After that, you will want to remove the large trapezoidal vacuum canister above the coils to get more room. If you accidentally pull the vacuum line from it, it'll be fine just reconnect it afterwards.

One more step that helped, but is potentially risky on older vehicles is to pull the PCV line assembly. On older cars, it can snap like a twig and leave you calling around to find the pricey pre-molded hose. Do this at your own risk and use good judgement beforehand. It was no problem with the one I worked on, but it may not be your case.

Now that you got access to the coil block, remove the 4 electrical connectors (2 on each side) and go ahead and pull the wires. If replacing the coil(s), make sure to label them in the same order with a paint marker or similar (save you a lot of headaches down the road). The plug wires are basically 4 long and 4 short ones with only like 1 or two oddballs so it might help to match lengths as you pull them.

Now that the coil block is pretty much freed, remove the 4 10mm bolts holding it down and carefully remove it from the engine compartment. From here you should see easy access to the sparkplugs. A littletip when installing new plugs in the rear is to use a swivel extension and don't use a plug socket with a rubber boot in it that could make the socket get stuck in the engine on the sparkplug (was a royal pain to retrieve, but problem was solved when I just used a regular 5/8" deep socket).

From here, you should be pretty much set, pull the old plugs and install new ones, then wires ad if necessary, coils. Don't forget to lubricate the threads of the plugs as well as gap them properly with a wire type gapper. Dielectric grease sould've come with your wires, make sure to use it as well. Also, the reccomended plugs for the 4.0L Northstar is AC Platinum's, I HIGHLY recommend using them.

Before putting everything back together, remember to test it first. Be sure anything that could fall into the engine or its components is secured and everything but the hood and engine cover is bolted down as well.

.

-Gambot747

On the toyota, you have a little 'diagnostic' box on the left side, if you look under the hood it will tell you which terminals to short out with a wire which disengages the spark advance. I think the yota is set 5 degrees before top dead center.

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4.6l isn't a v6, its a v8. ive never heard of any sierra coming in a v6 model to begin with. as for the firing order...18436572 is what mine is and i have a 1990 sierra 1500.

Mike's answer... I have a 1994 Sierra 1500 that came with a 4.3l Vortec V6. It was a very common motor in the 1/2 ton trucks. My brother in law has a 1992 with the same motor. Mine has 325,000 miles on it. The firing order is stamped on the intake manifold.

Ray's answer....If it is the 4.3 the firing order is 1-6-5-4-3-2 with clockwise distributor rotation.

1-3-2-4

distributor rotor turns counter-clockwise

cylinder layout:

FRONT OF CAR

2 1

4 3

On the distributor cap, #1 position points toward the PASSENGER REAR of the car, and is probably also marked on the cap. #1 cylinder uses the SHORTEST spark plug wire. Then #3 distributor cap position points toward the PASSENGER FRONT of the car, and uses a longer spark plug wire. Then, going counter-clockwise, is #2 distributor cap position, then #4 dist. cap position.

1 - 5 - 4 - 2 - 6 - 3 - 7 - 8

The distributor rotor turns COUNTERCLOCKWISE

The marked # 1 position on the distributor cap faces towards the REAR

The engine cylinder locations are numbered :

firewall

4 - 8

3 - 7

2 - 6

1 - 5

front of Ford V8

The cam and the heads are diffrent and the HO got headers and true dual exuast from the factory.

1,6,5,4,3,2

1-6-5-4-3-2

The spark plug firing order is ( 1- 3 - 7 - 2 - 6 - 5 - 4 - 8 ) The engine cylinders / spark plugs are numbered : passenger side of engine , front to rear , 1 , 2 , 3 , 4 drivers side of engine , front to rear , 5 , 6 , 7 , 8

1-8-4-3-6-7-2

1-8-4-3-6-7-2

Disconnect and plug the vacuum line and time the engine. Reconnet the vaccum and recheck the timing which should be advanced.

1-3-7-2-6-5-4-8

Click the link for a diagram.

What year ? What engine ? a little more information please

The manual says it is 1-6-5-4-3-2. It turns clockwise. The 1 position is nearest the passenger side, just left of the mounting screw. It is hard to put a picture in words.

also look on the intake manifold it will say firing order.

1-6-5-4-3-2

1-6-5-4-3-2

A Ford Inline-6 is 1-5-3-6-2-4 Here is an easy way for a MAN to remember it. I hope I dont offend anyone but 15 is to young 36 is to old and 24 is just right.(153624) Get it?

The other theoretical possibilities are 1-2-4-6-5-3 and 1-5-4-6-2-3.