GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 3 of 3
  1. #1

    Default Chevy 7.4l fuel issue

    Ok guys i have not really looked into this but i want to get a heads up first.

    I have a 1996 454 7.4l. Vortec that caught fire after looking into the fire i found that the exhaust manifold on the driverside was cracked and fuel was comeing out of the #2 cyl on that side what is the cause i am thinking fuel pressure mabee?

    Any help would be great
    :great:KEEP IT RUBBER SIDE DOWN....COME ON!!!!!!COPY!!:glasses:

  2. #2
    TrailLeadr's Avatar
    Join Date
    Jun 2005
    Coventry, Rhode Island


    Ok, so this is a tbi engine. So it's not raw fuel coming from an injector leak at #2 cylinder. Fuel lines for this engine come up from the back, and for the most part avoid any close proximity to the exhaust pipes. Even with a cracked manifold the only reason to get fuel like that is if your #2 cyl is not firing.

    Now a very strong possibility of engine fire is an oil leak onto the manifold. Loose valve cover bolts or bad valve cover gaskets would leak oil directly onto the manifold. If the oil wasn't changed in some time, it would be rich with unburned fuel due to blow by.

    Just a thought.
    Rhode Island

  3. #3


    No this is a sfi motor it has 8 injectors and the # 2 cyl is over fueling my question is what controls the fuel injectors and the ammount of fuel it supplys?
    :great:KEEP IT RUBBER SIDE DOWN....COME ON!!!!!!COPY!!:glasses:

Similar Threads

  1. 97 Burb fuel delivery issue???
    By evilram in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 1
    Last Post: 07-20-2010, 10:40 PM
  2. Replies: 0
    Last Post: 03-01-2010, 07:40 PM
  3. fuel delivery issue
    By hotchickwitha454 in forum Performance & Fuel
    Replies: 5
    Last Post: 10-20-2009, 01:30 AM
  4. Fuel gauge issue
    By ladder344 in forum General Chevy & GM Tech Questions
    Replies: 5
    Last Post: 05-02-2009, 12:33 AM
  5. fuel delivery issue
    By homer911 in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 11
    Last Post: 11-19-2007, 08:55 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts