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No top end power through gears

Discussion in 'T3 & T4 Tech Help Clinic' started by UK Skippy, Oct 19, 2019.

  1. UK Skippy

    UK Skippy Member

    Messages:
    49
    Location:
    Brisbane
    Hi All,
    After enjoying my first 3&1/2 weeks in my T3 I’ve all of a sudden lost top end power, I can feel it stutter and want to pull but foot flat to the floor and nothing, I’m not much of a mechanic and haven’t checked anything with injection system, I’ve checked and cleaned the points which are filthy but no great surprise there was no improvement. Can anyone point me in the right direction, I don’t have a tacho so can’t tell when the power stops but all gears feel about 10kph short of where they should. Hoping it is something simple like injector clean? Isles a little rough but timing doesn’t seem too bad.
     
  2. tintop

    tintop Well-Known Member

    Messages:
    681
    Location:
    Canberra
    How old is your fuel filter?
     
    Syncro27 likes this.
  3. UK Skippy

    UK Skippy Member

    Messages:
    49
    Location:
    Brisbane
    Not checked yet, no history on fuel filter so will check tomorrow
     
  4. Wayne murray

    Wayne murray Well-Known Member

    Messages:
    3,688
    Location:
    Seven hills
    Just replace it ,gives you a base point to start with.
     
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  5. oldman

    oldman Super Moderator Staff Member

    Messages:
    9,366
    Location:
    Avalon Beach NSW
    You need to check all the basics before you drive it.......otherwise it will not end well !
    Cheers,
    Mark
     
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  6. UK Skippy

    UK Skippy Member

    Messages:
    49
    Location:
    Brisbane
    So I don’t miss anything, what are the basics?
     
  7. oldman

    oldman Super Moderator Staff Member

    Messages:
    9,366
    Location:
    Avalon Beach NSW
    Fuel filter.......and get it out of the engine bay....leads and lead seals to tinware......engine bay seal......distributor cap.....plugs.... and points if your running them.....valves can take time but we’ll worth the effort to learn...fan belt tension and condition......clutch cable adjustment.
    Worth spending the time to learn basic stuff....will save “unforeseen “ breakdowns....
    It’s easy to get eager to drive and put off this stuff.........but it certainly time we’ll spent.
    Get a Haynes manual....back it up with a John Muir’s.
    Cheers,
    Mark
     
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  8. UK Skippy

    UK Skippy Member

    Messages:
    49
    Location:
    Brisbane
    Ordered thee Haynes last week, hopefully here this week
     
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  9. David H

    David H Well-Known Member

    Messages:
    5,974
    Location:
    newcastle
    With tintop & mark. Fuel filters can be mush after just one bad dose of fuel:(. Seen it happen many times. How long since last refuel? Sounds like engine not getting enough fuel & filter is the 'choke' point.
    Cheers
     
    UK Skippy likes this.
  10. cbus

    cbus Well-Known Member

    Messages:
    12,622
    Location:
    sunshine coast
    Ensure rubber fuel lines are replaced if not new.
    Main cause of fires.
    Verify each item as you go thru the system methodically.
    Ensure plugs good, get new points, set timing accurately.
    Possibly condenser ?
    2 deg can make a difference.

    I have found my 83 T3 doesnt like 91 octane.

    Your symptoms could be a number of things electrically or lack of fuel.
    Lack of fuel will also cause hot temps.

    Could also be lacking correct dissy.
    Does it have vac advance?
     
    UK Skippy likes this.
  11. Grantus

    Grantus Well-Known Member

    Messages:
    16,993
    Location:
    Southern ACT
    Sound advice Mark, but a lot looks applicable to an aircooled vehicle, not the water cooled T3 in question........just saying. ;)

    But yes, as stated, start with the fuel filter, as your symptoms are perhaps starving for either fuel or air..... so air filter clean or replace also should be in the early steps.

    Fuel pump check for operation and pressure, would be my next thing to do.
     
    UK Skippy likes this.
  12. oldman

    oldman Super Moderator Staff Member

    Messages:
    9,366
    Location:
    Avalon Beach NSW
    Fair call Grant....honestly missed the vehicle in question......thought it was a kombi, not a T3 :rolleyes:
    Sorry....had to do it;)
    Cheers,
    Mark
     
  13. Grantus

    Grantus Well-Known Member

    Messages:
    16,993
    Location:
    Southern ACT
    Can you hear that whooshing sound Mark? :rolleyes:.............. it’s the sound comments make, as they just pass by, straight to the keeper! :D
    :p
     
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  14. cbus

    cbus Well-Known Member

    Messages:
    12,622
    Location:
    sunshine coast
    Ahh.
    wasserboxer.
    Explains the lack of po:pwer
     
  15. Luckyphil

    Luckyphil Well-Known Member

    Messages:
    6,566
    Location:
    Gosford
    NEVER use E10 only 95 or 98
     
    UK Skippy likes this.
  16. UK Skippy

    UK Skippy Member

    Messages:
    49
    Location:
    Brisbane
    98 or bust
     
  17. UK Skippy

    UK Skippy Member

    Messages:
    49
    Location:
    Brisbane
    Only a week and a half ago, it was Caltex 98, previous owner also used 95+ but that doesn’t mean a bad batch of course, I’ll check filter in the morning
     
  18. cbus

    cbus Well-Known Member

    Messages:
    12,622
    Location:
    sunshine coast
    The high octane fuels have advanced detergents etc so should clear injectors.
    Overdosing with cleaner can stuff pump so I would suggest hold off with that untill other things checked or a test of injectors identify a crap pattern
     
    UK Skippy likes this.
  19. Grantus

    Grantus Well-Known Member

    Messages:
    16,993
    Location:
    Southern ACT
    If you have the original fuel tank, the crud build up and release, can block the filter/s and pump very quick.

    Mine came stock with only one filter AFTER the fuel pump, so the pump was the first to cop any crap from the tank. Since fitted a second filter before the pump.
     
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  20. UK Skippy

    UK Skippy Member

    Messages:
    49
    Location:
    Brisbane
    Fair point cbus, someone had suggested injector cleaner so I will start with filters and pumps
     

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