piston firing order

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

Question type: Maintenance & Repair

2 Answers

1,690

hopefully this helps

1,690

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

Chrysler 300 Experts

  • #1
    Jetlounge
    Reputation
    1,930
  • #2
    Eddie_G1
    Reputation
    910
  • #3
    Whatisit
    Reputation
    830
View All

Related Models For Sale

Used Dodge Charger
75 Great Deals out of 765 listings starting at $2,000
Used Ford Mustang
8 Great Deals out of 1,120 listings starting at $1,250
Used Chevrolet Impala
131 Great Deals out of 1,053 listings starting at $2,600
Used Cadillac CTS
25 Great Deals out of 344 listings starting at $2,900
Used Jeep Grand Cherokee
90 Great Deals out of 2,802 listings starting at $1,500
Used Honda Accord
76 Great Deals out of 1,059 listings starting at $1,200
Used Ford F-150
525 Great Deals out of 10,140 listings starting at $1,400
Used Nissan Maxima
25 Great Deals out of 364 listings starting at $3,990
Used Chevrolet Silverado 1500
186 Great Deals out of 11,109 listings starting at $999
Used Chevrolet Tahoe
8 Great Deals out of 724 listings starting at $4,995
Used Dodge Durango
122 Great Deals out of 1,057 listings starting at $2,998
Used BMW 3 Series
184 Great Deals out of 1,794 listings starting at $2,499

Used Cars For Sale

2017 Chrysler 300 For Sale
73 listings starting at $31,995
2016 Chrysler 300 For Sale
46 Great Deals out of 412 listings starting at $21,877
2015 Chrysler 300 For Sale
3 Great Deals out of 69 listings starting at $19,796
2014 Chrysler 300 For Sale
83 listings starting at $13,900
2013 Chrysler 300 For Sale
4 Great Deals out of 56 listings starting at $11,888

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.