1. Holiday Special! - 2 for 1 Elite Explorer sale!

    Right now you can purchase an Elite Explorer membership for $20 and receive a two year membership!

    Click Here to start your membership and get rid of the ads!

    Dismiss Notice
Dismiss Notice



Register Today It's free! This box and some ads will disappear once registered!

Any thoughts before I start swapping the motor today

Discussion in 'Stock 2002 - 2005 Explorers' started by FlFire medic, October 7, 2019.

^^Searches ExplorerForum.com^^





  1. FlFire medic

    FlFire medic New Member

    Joined:
    October 7, 2019
    Messages:
    2
    Likes Received:
    0
    Trophy Points:
    1
    City, State:
    FL
    Year, Model & Trim Level:
    2002 explorer
    i have a 2002 explorer 4.6 V8. It was given to us for free and we are trying to get it to run.

    It cranks but will not start

    Here’s what I know
    -replaced and checked all fuses and relays
    -new fuel pump and filter
    -good fuel pressure
    -fuel in cylinders mists out when plugs removed
    -new plugs and coil packs
    -has good spark
    -new battery
    -injectors cleaned and checked w/ noid light
    -good compression in 7 of 8 cyl


    Has fuel and spark but will not fire

    Any thoughts?
     
  2. Support EF

    Elite Explorer 2 for 1 Sale! $20 for 2 years!

    Explorer Forum has probably saved you that much already, and will continue to save you money as you learn how to diagnose fix problems yourself and learn which modifications work without having to experiment on your own. Elite Explorer members see practically no ads, can add their own profile photo, upload photo attachments in all forums, and Media Gallery, create more private Conversations, and more. Join Today. Your support is greatly appreciated.



  3. FloGrown941

    FloGrown941 New Member

    Joined:
    July 14, 2016
    Messages:
    18
    Likes Received:
    2
    Trophy Points:
    13
    City, State:
    Florida
    Year, Model & Trim Level:
    1996 XLT 5.0
    2005 XLT 4.0
  4. 410Fortune

    410Fortune Snow Season? Staff Member Moderator

    Joined:
    August 3, 2000
    Messages:
    24,230
    Likes Received:
    868
    Trophy Points:
    143
    City, State:
    NORTH IDAHO, 7B
    Year, Model & Trim Level:
    B2 Slightly Modified
    what was compression in the 8th cyl?
    Could the timing be off?
    How does it crank? Is it a healthy crank, meaning it is spinning fast enough
    Is there a security key on the 02? Does the theft light on the dash flash or go out when cranking?
     
  5. 974X4BLACKSPORT

    974X4BLACKSPORT Active Member

    Joined:
    May 21, 2018
    Messages:
    829
    Likes Received:
    175
    Trophy Points:
    53
    Location:
    FL
    City, State:
    hudson
    Year, Model & Trim Level:
    BLACK 1997 SPORT 4 BY 4
    If it has good spark and fuel, cranks over fine and does not run, without knowing actual cranking compression numbers, then we must consider this:
    1) is the spark timing accurate?
    2) is the fuel trim accurate ?
    3) is the engine flooded?
    4) is the engine actually getting air?
     
    • Useful Useful x 1
  6. 410Fortune

    410Fortune Snow Season? Staff Member Moderator

    Joined:
    August 3, 2000
    Messages:
    24,230
    Likes Received:
    868
    Trophy Points:
    143
    City, State:
    NORTH IDAHO, 7B
    Year, Model & Trim Level:
    B2 Slightly Modified
    exactly unless the airbox is plugged or the exhaust is plugged I would think your engine has jumped time
     
  7. FlFire medic

    FlFire medic New Member

    Joined:
    October 7, 2019
    Messages:
    2
    Likes Received:
    0
    Trophy Points:
    1
    City, State:
    FL
    Year, Model & Trim Level:
    2002 explorer
    Going to swap timing chains. It has health crank and no theft light comes on. When placing hand over intake the air flow seems inadequate
     

Share This Page







We Support Our Troops!