piston firing order


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

Question type: Maintenance & Repair

2 Answers

Dzemo Kilic

hopefully this helps

Dzemo Kilic

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

Chrysler 300 Experts

#1 Jetlounge
Reputation 1,340
#2 Eddie_G1
Reputation 800
#3 Whatisit
Reputation 750
View All

Related Models For Sale

Used Dodge Charger"
641 Great Deals out of 29,674 listings starting at $2,275
Used Ford Mustang"
731 Great Deals out of 41,065 listings starting at $900
Used Chevrolet Impala"
932 Great Deals out of 35,698 listings starting at $1,500
Used Cadillac CTS"
421 Great Deals out of 13,010 listings starting at $1,000
Used Jeep Grand Cherokee"
1,213 Great Deals out of 73,878 listings starting at $1,593
Used Honda Accord"
1,255 Great Deals out of 78,694 listings starting at $1,400
Used Nissan Maxima"
495 Great Deals out of 24,224 listings starting at $1,500
Used Chevrolet Tahoe"
1,076 Great Deals out of 36,075 listings starting at $1,700
Used Chevrolet Silverado 1500"
2,445 Great Deals out of 144,778 listings starting at $1,995
Used Ford F-150"
3,268 Great Deals out of 216,650 listings starting at $1,500
Used Chevrolet Malibu"
1,148 Great Deals out of 73,044 listings starting at $695
Used BMW 3 Series"
1,609 Great Deals out of 39,618 listings starting at $888

Used Cars For Sale

2017 Chrysler 300 For Sale
4 listings starting at $38,930
2016 Chrysler 300 For Sale
60 Great Deals out of 6,722 listings starting at $17,890
2015 Chrysler 300 For Sale
48 Great Deals out of 2,218 listings starting at $15,895
2014 Chrysler 300 For Sale
108 Great Deals out of 2,339 listings starting at $10,999
2013 Chrysler 300 For Sale
62 Great Deals out of 1,737 listings starting at $8,500