SOURCE: firing order 1955 gmc 100
I have a 54 bel air customer brought in for me to install engine, but I do not know the firing order or the mark on distributor cap, could you please let me know what they are please, thank you very much. It is a straight 6.
SOURCE: whats the firing order diagram for a 2004 envoy
The number 3 plug is the third one back from the front of the engine. They are numbered in order 1,2,3,4,5,6 front to back, this is the cylinder numbers not the firing order. Firing order is 1-5-3-6-2-4 .
1-5-3-6-2-4 is the spark plug firing order for the 4.9 L ( 300 cubic inch ) straight 6
The distributor rotor turns CLOCKWISE
The marked # 1 position on the distributor cap is installed facing away from the engine
Hope this helps
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