piston firing order

Asked by Apr 21, 2016 at 08:32 AM about the 2005 Chrysler 300

Question type: Maintenance & Repair

2 Answers

1,120

hopefully this helps

1,120

The firing order of an engine is the sequence the spark plugs fire. On engines with a distributor, the firing order is determined by the routing of the spark plug wires from the distributor cap to the spark plugs in each cylinder. When the piston is at top dead center (TDC) on the compression stroke, the rotor inside the distributor should be aligned with the number one (#1) spark plug terminal in the distributor cap. Most (but not all) Ford distributors rotate in a counter-clockwise direction, so the next plug wire in the cap would go to the next spark plug in the firing sequence for that engine. On most Chrysler engines the #1 cylinder is the first cylinder at the front of the engine on the driver side (left side) of a rear-wheel drive car or truck. On front-wheel drive cars and minivans with 2.7L and 3.5L V6 engines, the #1 cylinder is the first cylinder on the front RIGHT side of the engine. On trucks with the 3.9L V6, #1 cylinder is the first cylinder at the front LEFT of the engine. The cylinders are numbered in a staggered sequence, with all the odd numbers on one side and the even numbers on the other side. The correct firing order is very important because mixing up the spark plug wires may prevent the engine from starting, cause it to backfire and run very poorly if at all. On engines with distributorless ignition systems or coil-on-plug ignition systems, the firing order is controlled by the ignition module or engine computer. The computer receives an input signal from the crankshaft position sensor (and camshaft position sensor on some engines) to determine which piston is coming up to top dead center on its compression stroke. It then fires that spark plug, and the next and so on in the firing sequence.

Your Answer

Add photo

Related Questions

Search Chrysler 300 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Chrysler 300 Experts

#1 Jetlounge
Jetlounge
Reputation 1,540
#2 Eddie_G1
Eddie_G1
Reputation 840
#3 Whatisit
Whatisit
Reputation 780
View All

Related Models For Sale

Used Dodge Charger
53 Great Deals out of 734 listings starting at $3,190
Used Ford Mustang
7 Great Deals out of 854 listings starting at $4,000
Used Chevrolet Impala
45 Great Deals out of 820 listings starting at $1,500
Used Jeep Grand Cherokee
38 Great Deals out of 3,393 listings starting at $3,495
Used Cadillac CTS
35 Great Deals out of 355 listings starting at $3,750
Used Chevrolet Tahoe
324 listings starting at $6,477
Used Ford F-150
339 Great Deals out of 6,428 listings starting at $1,000
Used Nissan Maxima
21 Great Deals out of 274 listings starting at $3,200
Used Chevrolet Silverado 1500
126 Great Deals out of 5,431 listings starting at $1,593
Used Honda Accord
82 Great Deals out of 968 listings starting at $2,600
Used BMW 3 Series
164 Great Deals out of 1,645 listings starting at $2,000
Used Chevrolet Malibu
106 Great Deals out of 1,927 listings starting at $2,996

Used Cars For Sale

2017 Chrysler 300 For Sale
70 listings starting at $40,330
2016 Chrysler 300 For Sale
17 Great Deals out of 221 listings starting at $26,697
2015 Chrysler 300 For Sale
12 Great Deals out of 162 listings starting at $22,649
2014 Chrysler 300 For Sale
89 listings starting at $17,900
2013 Chrysler 300 For Sale
5 Great Deals out of 65 listings starting at $13,890