The firing order for most Chrysler/Mopar 4.7-liter V8 engines is 1-8-4-3-6-5-7-2. This fixed sequence ensures proper balance and cam timing across the engine, and is used by the PowerTech family that powers many Jeep, Dodge, and Chrysler applications. Always verify with the specific vehicle's service manual or an under-hood diagram, as some early or aftermarket variants may differ.
Why the order matters
In a V8 like the 4.7, the firing order determines the sequence in which cylinders fire relative to crankshaft rotation and camshaft lobes. A correct order minimizes vibration, reduces wear on ignition components, and ensures smooth power delivery during acceleration and cruising.
Model year and variant considerations
While 1-8-4-3-6-5-7-2 is typical for the PowerTech 4.7, variations can exist if the engine was rebuilt with non-factory parts, used in different markets, or later modified. Specific cylinder numbering and mapping may differ between model years or service literature.
Before relying on this order for maintenance tasks, confirm by checking:
- Engine block stamping near the cylinder head identifying the firing order
- Vehicle service manual for your year and model
- Factory diagrams in authorized repair publications or OEM parts catalogs
- Under-hood stickers on the timing cover or valve covers indicating the sequence
Note that mismatches in the firing order usually cause misfires, rough idle, and performance issues, and can damage ignition components if wiring is incorrect.
Summary
For most 4.7-liter PowerTech V8 engines, the standard firing order is 1-8-4-3-6-5-7-2. Always verify on the specific engine before performing maintenance, as variations exist across years and markets. When in doubt, consult the vehicle's service manual or a qualified technician.
Is a 4.7 Dodge motor a 318?
The Dodge 4.7 engine is a part of the Chrysler PowerTech engine family and was introduced in the late 1990s as a replacement for the older 318 V8 engine. This engine is an all-aluminum, overhead valve (OHV) engine that features a 90-degree V8 configuration.
How to tell if 4.7 is ho?
We come over to this side. And there you go you can definitely see it. Right yeah down there looking at it upside down there's an HO. We got an HO motor here. Well I'd love to take the whole thing.
What are the common problems with a 4.7 Dodge engine?
And that is very much the case with the Dodge. And Chrysler 4.7 Power Tech engine. It is very prone to head gasket failure when it overheats.
Why does the 4.7 have 16 spark plugs?
The wide chamber makes it harder for a single plug to ignite the air-fuel mix efficiently, so a second plug ensures a faster, more complete burn, resulting in better emissions, fuel economy and engine smoothness. While it adds maintenance, the payoff in performance and efficiency is clear.