2004 GMC Envoy Repair Question
Topics covered: Fuel rail, Compression, Fuel filter.
Mileage: 120,000 miles.
Mileage: 120,000 miles.
Asked on July 8, 2011
Fuel rail compression valve
If you see in this diagram for a 2004 gmc envoy 6 cyl. there is no compression on valve item #12 in the following link. is this the fuel rail valve that i need to check psi from? i checked the valve that is by the fuel filter for the fuel pump and there is enough compression there. so question is, is item #12 the fuel rail valve i need to be checking?
please email me at jose_moon24@yahoo.com
items checked
coils- good ohms reading there
replaced coil boots
replaced spark plugs
cleaned out throtle body
before i check the fuel injectors i would like to know if item 12 is the fuel rail valve. please advice, thank you! all the information found in your website is awesome!
please email me at jose_moon24@yahoo.com
items checked
coils- good ohms reading there
replaced coil boots
replaced spark plugs
cleaned out throtle body
before i check the fuel injectors i would like to know if item 12 is the fuel rail valve. please advice, thank you! all the information found in your website is awesome!
Asked by joseluna01Answer
Replied on July 8, 2011
I have no idea what you're looking for but item 12 is just a vapor line and doesn't even carry fuel.
Replied on February 3, 2012
You're probably looking for the fuel test port-does it look like a tire valve-If there's no pressure at the port-best check the fuel pressure with a gauge,to rule out the fuel filter and fuel pump-
Replied on February 3, 2012
Wow! how did that happened-it pop up and I answered it-didn't realized the date-thought it was a new thread
Replied on February 3, 2012
Site has been acting real weird lately.