terrance bond
New Member
- Joined
- April 23, 2018
- Messages
- 2
- Reaction score
- 0
- City, State
- shingleton
- Year, Model & Trim Level
- 2005 explorer xlt
the following has been replaced,,new fuel pump ,fuel filter ,,spark plugs ,new fuel rail pressure sensor,,new crank sensor,new throttle body assy,,checked compression 150 psi across all cyl ..good injector pulse,80 psi fuel pressure.,,good spark ,,no codes ,,the pats system light appears to working to specs.no vacuum at the any port.we removed the intake after smoking the intake and found a major leak at the egr valve assy,.when the intake was off we left a rag over the intake ports and when the motor was cranked it tried to suck the rag into the motor,.this make me think we have good vacuum .we installed a used upper intake off a running 4.0 and we still don't have any vacuum when cranking.we have removed the fuel pump relay and tried to start the vehicle ,it tries but no fire ..but if you let the vehicle set 1 minute it will fire for about 30 seconds.