Timing and Firing Orders

On a Ford 351 cubic inch / 5.8L V8 engine :

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

The distributor rotor turns COUNTERCLOCKWISE ( looking from the top )

The engine cylinder locations are numbered :

firewall

4 - 8

3 - 7

2 - 6

1 - 5

front of vehicle

Call your local parts store and they will be happy to give you the answer.

Well it depends on whether or not you have a turbo or not as these are two different engines. On the non-turbo model there is small marks on the cam sprockets that need to be as close to each other as possible, on the bottom of the engine there is a small triangle shaped mark that you need to line the crank up with. Get all of these in line where they should be and your in buisness. But if you aren't extremely careful you will screw up the timing and destroy your valves.

1-4-2-5-3-6 for the 3.0 & 3.8 V6. The distributor rotates clockwise on the 3.0 & counterclockwise on the 3.8

The engine is a four cam motor with two cams on each head.

The timing belt is tensioned with three tensioners and it is advised you mark each sprocket position with White Out when the sprocket notches align with the four marks in the timing cover backing plate, as well as the crank position being at #1 TDC.

The engine timing requires the use of a SST (Special Service Tool. ) that GM supplied each dealership to lock all the cams and the crank so you can install a new belt kit.

The GM OE Timing Kit with all tensioner rollers and belt is around $400.00 to $500.00.

It is possible to lock the cams with other means and mark off the new belt from the marks you made on the old belt where it aligns with the static reference marks on the backing plate.

I used a pair of wooden wedges between the cam sprockets after aligning everything up.

However, it would be easy to snap off the cam nose journals if you hammered them in too tight. User beware !

Each tensioner has to be loosened to allow belt to install and juggling the two excentric tensioners to align the cams is done first, holding the belt to the cam sprockets with cable ties.

The last 'self adjusting tensioner' is then tightened to align it's notches together for final tension on the belt.

Turn the engine over by hand to check alignment of sprockets and make sure there is no internal mechanical interference.

FYI. ........There is a small bore vacuum hose from the underside of the throttle body to the fuel pressure regulator at back of engine...you will knock the rubber connection hose off while trying to get the timing cover off....make sure it is reinstalled.

NB : There is a DIY section on ALLDATA.com you can see by paying a small fee for the vehicle of your choise.

900S 1993/98 Engine code B2341 Firing order 1 3 4 2.

If it's made by man it's going to stop working eventually. They wear out/burn out. Not necessarily at the same time. The other two could go tomorrow or last for years.

Firing order of a Toyota 1VD-FTV

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

The timing should be set at 0 degrees.

The firing order for a 2003 Oldsmobile Alero with a 2.2L inline-four engine is 1-3-4-2. This sequence determines the order in which the engine's cylinders fire to ensure smooth operation. For the 3.4L V6 engine, the firing order is 1-2-3-4-5-6. Always refer to the vehicle's service manual for precise details and diagrams.

Probably on the bottom of the timing cover on the front of the engine.

1-6-5-4-3-2

It will come in handy to know the firing order of an engine. The firing order of a Rover 100 engine is 1-3-4-2.

Whats wrong with posting an engine size? lol Engine Firing order Distributor rotation #1 plug location

V6 (3.8) 165432 Clockwise Left front

305/350 18436572 Clockwise Left front

400/403 18436572 Counter clockwise Left front

This is the procedure for installing the timing belt, and contains the info on where all marks need to be set for proper timing: Install : 1.Install tensioner pulley 2.Pull tensioner pulley to its furthest point and tighten lock bolt. 3.Check that timing mark on timing belt pulley is aligned with timing mark on engine http://msw.kiausa.com/data/manual/sh...G/lc3b620a.gif 4.Check that "I" mark on intake camshaft pulley is aligned with mark on seal plate and "E" mark on exhaust camshaft pulley is aligned with mark on seal plate. http://msw.kiausa.com/data/manual/sh...G/lc3b620b.gif 5.Install timing belt onto timing belt pulley first, then idler pulley, exhaust camshaft pulley, intake camshaft pulley, and tensioner pulley in that order. 6.Check that there is no looseness in belt between idler pulley and exhaust camshaft pulley or between intake and exhaust camshaft pulleys. 7.Loosen tensioner pulley lock bolt and allow tensioner spring to apply tension to timing belt. 8.Tighten tensioner pulley lock bolt to specified torque. Tightening torque:28~38 lb-ft (38~51 N

The DECS order no 58 series of 1990 is 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8. It is pretty simple.

1-8-4-3-6-5-7-2, Clockwise rotation. Cylinder Numbers. Pass side 2-4-6-8 Driver side 1-3-5-7

1342

1-2-3-4-5-6

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

Clockwise, 1, 6, 5, 4, 3, 2. Looking from the front, #1 would be located at the 5:30 position on the distributor cap. Cylinders 1, 3 and 5 are front to back on the drivers side of engine, cylinders 2,4 and 6 are front to back on the passengers side.

firewall

4 - 8

3 - 7

2 - 6

1 - 5

front

As you fail to mention year and engine size, I will assume it is a 3.8 V6. Firing order for the 3.8 is 1-6-5-4-3-2

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 cylinder locations are numbered :

firewall

4 - 8

3 - 7

2 - 6

1 - 5

front