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Timing and Firing Orders
Firing order refers to the order of power delivery of the cylinders in an engine. Timing and firing orders both contribute to the engine’s fuel economy, power, and longevity. Achieving the proper timing is critical in the engine’s performance.
6,170 Questions
How to Change Spark Plugs on 4.6 & 5.4 Liter By Dave West I've replaced plugs on quite a few 5.4Ls now (the 4.6L with plug wires is similar) and once you've done a set they really are not as bad as they look. Contrary to what some people will say, you don't have to remove the fuel rails. The Coil on Plug (COP) assemblies will come out past the fuel rail. I take an old piece of seat foam and put it on top of the radiator support to the engine to allow me to lay on it without hurting my tummy. It makes the job way less painful. Start by removing the cover over the throttle body (the black plastic cover that says "5.4" on it). There are three 10mm head bolts that hold it on. Next remove the air intake tube from the throttle body to the air filter housing. You loosen the hose clamps at either end of it; disconnect the connector on the AT (about half way up the air intake hose), the pull out the small hoses that go into the air intake tube near the throttle body. Next remove the brace from the power steering reservoir to thermostat housing. There are three 8mm or 5/16" head screws that hold it on. Now you should be able to see the COPs. To remove the COPs you can use a 7mm or 9/32" wrench or nut driver or socket, extension and ratchet or all of the above. If you turn the fuel injectors to the side it will give you more room to work with the COPs. Unplug the connector on each COP by pressing the tab in and pulling on the connector. After you're done that just twist and pull the COPs out. A couple of the COPs on the driver's side and #4 on the passenger's side are a bit hard to get at but with some patience they will come out. After you've removed the COPs take a blow gun and blow out the spark plug holes. Don't be surprised if there is rust and junk in them. Next you can actually remove the plugs. Use a combination of extensions, swivels (universal joints), sockets and ratchets to get at them. Whatever works best for you is good. On the harder ones to get at I usually use a socket with a 4" extension, then a swivel, then a long extension, then the ratchet. The plugs are way down in the hole which is why I use the extension then the swivel. The swivel makes it easier to clear the firewall. Set the gap on the new plugs to whatever it says on your emissions decal on the radiator support....usually .052-.056". Apply a small amount of anti-seize to the threads only on the spark plug. You can use a piece of vacuum hose or fuel hose over the end of the plug to get it started in the hole. Carefully start the plugs in their holes. If you can't get them most of the way in by hand with the hose take a look and see why not. Cross threaded plug threads are no fun! The plugs are to be tightened to 13 lb-ft. which is just hand tight with a short ratchet. Don't over tighten them! The threads in the aluminum heads have enough problems as it is. After that just put everything back together in reverse order. Apply some dielectric grease to the plug boots as well to help seal them. I've done enough of these that I can replace the plugs in approximately 45 minutes but don't be surprised if the first time you do it takes a few hours.
What is the correct timing on a Ford 390 motor?
Spark plug gap - .034"
Point Gap- .021 M/T, .017 A/T
Dwell Angle- 24 to 39 M/T. 26 to 31 A/T
If the 390 was produced in 1962, the ignition timing was five degrees before top dead center ("BTDC"). If produced in 1963 and equipped with a manual transmission, the ignition timing was five degrees BTDC, and eight degrees BTDC if equipped with the automatic transmission. If produced between 1964 and 1966 and equipped with the manual transmission, the ignition timing was four degrees BTDC, and six degrees if equipped with the automatic transmission. If the 390 was produced in 1967 and not equipped with the Thermactor Exhaust Emission Control System, the ignition timing was 10 degrees BTDC. The ignition timing for all other 390s was six degrees BTDC.
How do you hook up the spark plug wires to the distrbutor cap on a 1987 Mercury Cougar?
You can find the correct firing order for your 1987 mercury cougar at www.coolcats.com, it is a website dedicated to the cougar and thunderbird.
What is the firing order on a 2000 3.0 flex fuel ranger?
( 1 - 4 - 2 - 5 - 3 - 6 ) The COIL PACK TOWERS are numbered : coil---3---4 pack--2---6 plug---1---5 The engine cylinders / spark plugs are numbered : passenger side of engine , front to rear , 1 , 2 , 3 -----drivers side of engine , front to rear , 4 , 5 , 6
The wiring harness will not work.
In 1992, Dodge introduced the "Magnum" series motors. These motors were MPFI (Multi-Point Fuel Injection) motors whereas the motor in the 1990 Dakota was TBI (Throttle Body Injection.) On this fact alone, you'll be missing the connections required for the fuel system if you use the wiring harness. The computer management systems were also vastly different so you would not be able to plug into the Engine Control Unit (ECU) with the wiring harness.
What is the firing order of 4 cylinder engine?
Depends on the make, model, and year which you failed to list. It will be 1-3-4-2 or 1-2-4-3, or 1-3-2-4, or 1-4-3-2
Is spark plug firing order clockwise or counterclockwise on a 440 dodge?
Rotor turns counterclockwise.
What is the firing order for a 1995 Chevy Astro 4.3L?
Where can you get a diagram of the timing belt on an 87 Honda CRX DX?
You need to go to a car parts store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library.
What is the firing order for a 1983 4 cylinder Nissan pickup truck with 8 spark plugs?
CCW rotation 1-3-4-2 / 1 ex, 1 int / 3 int, 3 ex / 4 int, 4 ex / 2 ex, 2 int
What is the firing order for 1994 Chevy Caprice?
typically the firing order for a small block Chevrolet:
Clockwise 1-8-4-3-6-5-7-2
In 1992, GM created a new-generation small-block engine called the LT1, recalling the 1970 LT-1 moniker. It displaced 5.7 liters and was a 2-valve pushrod design. The LT1 used a reverse-flow cooling system which cooled the cylinder heads first, maintaining lower cylinder temperatures and allowing the engine to run at a higher compression than its immediate predecessors. This engine was used in:
- 1992-1996 Chevrolet Corvette C4
- 1993-1997 Chevrolet Camaro Z28
- 1993-1997 Pontiac Firebird Formula and Trans Am
- 1994-1996 Buick Roadmaster
- 1994-1996 Cadillac Fleetwood
- 1994-1996 Chevrolet Caprice
- 1994-1996 Chevrolet Caprice Police Package
- 1994-1996 Chevrolet Impala SS
- 1994-1996 Chevrolet Caprice Wagon
- 1994-1996 Buick Roadmaster Wagon
What is the firing order for a 1987 Chevrolet celebrity with a 4cy?
The firing order for a 1987 Chevy Celebrity with the 2.5L 4 cylinder engine is: 1 3 4 2
What is the firing order for 1967 ford mustang 200 engine?
( 1 - 5 - 3 - 6 - 2 - 4 ) for your 200 cubic inch straight 6 cylinder engine
The distributor rotor turns CLOCKWISE
# 1 on the distributor cap faces AWAY from the engine
Is there a alternate firing order for a 1991 f150 with a 302?
There is an alternate firing order for a 302 HO engine. Standard Ford 302 firing order is 1-5-4-2-6-3-7-8, HO versionis 1-3-7-2-6-5-4-8
There typically isn't any timing marks at the distributor. It is possible to slightly advance or retard the ignition (spark) timing by rotating the distrubitor but as far as timing marks go, the only that you will find will be right above the camshaft sprocket and the harmonic balancer (crankshaft pully). possible one more for the oil pump or countershaft.
I have to think it is the wire; it is probably shorting out to the engine. Even if the wire looks good and tests good don't trust it.
