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2005 Chevrolet Impala 3.4L where is cylinder 4 located? (PO304)

Tiny
LAWRENCECHRISTOPHER2010
  • MEMBER
  • 2005 CHEVROLET IMPALA
  • 90,000 MILES
3.4L V6 (distributorless) I have a bad #4 fuel injector (PO304). The problem is finding the #4 fuel injector. There are numbers stamped on manifold, but their location on the air intake + next to a cylinder raises questions on which cylinder is which. I have extracted the fuel rail and attached injectors, I need to know which one is #4. Is number 4 located on the front(facing radiator), or the back(facing the firewall)?
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Sunday, February 19th, 2012 AT 9:10 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
See below-
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Sunday, February 19th, 2012 AT 9:24 PM
Tiny
LAWRENCECHRISTOPHER2010
  • MEMBER
  • 11 POSTS
How do you know what side is the front? My engine sits with 3 injectors paralell to the radiator, and 3 injectors parallel to the windsheild. It faces differently then your diagram.
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Sunday, February 19th, 2012 AT 9:40 PM

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