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Starting point for firing order

2002 gmc envoy

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Posted on Apr 22, 2017

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Starting point is always cylinder 1, on straight engines at the front, on V engines front left. The gear wheel or crank sensor will register at TDC or just before. TDC can be found with a pencil inserted in the spark plug hole of cylinder 1
So for a 4 cylinder engine it's 1,3,4,2
6 cylinder straight, 1,3,5,6,4,2,
Cant remember the v engines but it's always left right etc.and from end to centre.

Posted on Apr 22, 2017

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Hope help with this (remember comment and rated this post).

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1 Answer

Need firing order diagram for 2002 gmc envoy


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The plastic intake should have this sequence molded into it somewhere, and even the corresponding cylinder numbers in front of their respective holes. Have fun, and thanks for posting on Fixya.com

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