Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

pressing fuel pedal down engine hesitates

Discussion in 'Trucks [ Eighteen Wheelers ]' started by davect, Nov 19, 2011.

Page 1 of 2
  1. Nov 19, 2011 #1
    davect

    davect Light Load Member

    149
    31
    Jan 1, 2010
    Connecticut
    0
    last week had a problem with the mack i drive....i press fuel pedal down and it hesitates before engine revs...this makes downshifting a pain in the #####....

    mechanic thought it was throttle position sensor so replaced it, however problem is still there....he's thinking it's some rubber hoses in the intake that are weak....

    what would that be? i am not all that mechanically inclined with trucks but i want to learn more...

    anybody have any ideas/comments?

    thank you
     
    davect, Nov 19, 2011
    davect, Nov 19, 2011
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Nov 19, 2011 #2
    bender

    bender Road Train Member

    2,105
    1,360
    Jul 20, 2010
    Don't Kid Yourself
    0
    Could be a leak in your air charge cooler or piping or, I recently saw one that had the turbo hanging up at low engine speed until it got wound up. Carbon buildup or wear in the turbo. Also check turbo controls for your engine, air intake and filter etc.
     
    bender, Nov 19, 2011
    bender, Nov 19, 2011
    #2
    davect Thanks this.
  4. Nov 19, 2011 #3
    Pablo-UA

    Pablo-UA Road Train Member

    7,604
    1,642
    Oct 11, 2010
    Borispol, Ukraine
    0
    fuel delivery issues......
     
    Pablo-UA, Nov 19, 2011
    Pablo-UA, Nov 19, 2011
    #3
    davect Thanks this.
  5. Nov 24, 2011 #4
    davect

    davect Light Load Member

    149
    31
    Jan 1, 2010
    Connecticut
    0
    UPDATE: Mechanic noticed fuel is leaking. Could this be an injector issue?
     
    davect, Nov 24, 2011
    davect, Nov 24, 2011
    #4
  7. Nov 24, 2011 #5
    Dice1

    Dice1 Road Train Member

    1,315
    609
    Jul 1, 2011
    Bessemer City, NC
    0
    Need more info on this leaking from where?

    Sounds like you have a fuel delivery issue.

    Does it vibrate the truck with the hesitation or is just a loss of power?

    Is your fuel mileage off and how much?
     
    Dice1, Nov 24, 2011
    Dice1, Nov 24, 2011
    #5
    davect Thanks this.
  8. Nov 24, 2011 #6
    dave26027

    dave26027 Road Train Member

    1,284
    804
    Sep 10, 2009
    Dallas, Texas
    0
    Fuel system sucking air or leaking pressurized fuel.

    "Fuel delivery issues" like Pablo said.
     
    dave26027, Nov 24, 2011
    dave26027, Nov 24, 2011
    #6
    davect Thanks this.
  9. Nov 29, 2011 #7
    davect

    davect Light Load Member

    149
    31
    Jan 1, 2010
    Connecticut
    0
    doesn't vibrate at all...i just does absolutley nothing...i press fuel pedal down to the floor and no response for a good second and then it kicks in...this makes downshifting a pain in the ###...it's just annoying overall.

    the leak has to be determined exactly where...mechanic just noticed it was over the block
     
    davect, Nov 29, 2011
    davect, Nov 29, 2011
    #7
  10. Nov 29, 2011 #8
    Pablo-UA

    Pablo-UA Road Train Member

    7,604
    1,642
    Oct 11, 2010
    Borispol, Ukraine
    0
    What engine? what year?

    Pressurized fuel leak may be dangerouse... it is fuel, it is falmmable, especially winter fuel
     
    Pablo-UA, Nov 29, 2011
    Pablo-UA, Nov 29, 2011
    #8
  11. Nov 29, 2011 #9
    davect

    davect Light Load Member

    149
    31
    Jan 1, 2010
    Connecticut
    0
    e7 400...2001
     
    davect, Nov 29, 2011
    davect, Nov 29, 2011
    #9
  12. Nov 29, 2011 #10
    kajidono

    kajidono Road Train Member

    6,422
    4,659
    Jun 1, 2009
    Streetrat
    0
    Mine does that too once in a while. I suspect it has more to do with the drive by wire system not getting a signal for a moment.
     
    kajidono, Nov 29, 2011
    kajidono, Nov 29, 2011
    #10
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

    • Page 1 of 2