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2007 Fit mileage drop

  #1  
Old 07-03-2017, 03:59 PM
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2007 Fit mileage drop

My 2007 Honda Fit has recently seen a drop in mileage... I used to get 620km (387mi) per tank in summer at 90km/h (56mph) but now I get about 560km (350mi) under the same conditions. I have fresh oil, new air filter, new spark plugs and coil packs. Can anyone recommend other things to check as a possible cause for this? Driving style has been kept constant.
 
  #2  
Old 07-03-2017, 05:24 PM
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Check tyre pressures and, after driving, check you do not have a hot wheel. That could indicate a brake rubbing.
 
  #3  
Old 07-04-2017, 08:07 AM
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Check valve clearance, too. Do it NOW before you burn a valve.



Our Fit w 135K miles on it, just achieved 39 MPG on a 250 mile trip. <---incentive
 
  #4  
Old 07-04-2017, 06:58 PM
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Originally Posted by JockoT View Post
Check tyre pressures and, after driving, check you do not have a hot wheel. That could indicate a brake rubbing.

Tires 36psi all around. No seized calipers or rubbing brakes
 
  #5  
Old 07-04-2017, 07:01 PM
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Originally Posted by Carbuff2 View Post
Check valve clearance, too. Do it NOW before you burn a valve.



Our Fit w 135K miles on it, just achieved 39 MPG on a 250 mile trip. <---incentive
Hmmmm according to the owner's manual I should have done this 2-3 years ago but when I brought it to the shop they said there's no point. Also doesn't it cost $600-$1000 to do this? I'll have to read up on this issue
 
  #6  
Old 07-04-2017, 07:59 PM
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The valves in the 1.5L engines DO require periodic adjustment.

I've done ours myself every 60K miles and several were out-of-spec each time.


It took me 2 - 3 hrs each time, but I'm an amateur. An independent Honda specialist could do it for you for a LOT less than a dealer.
 
  #7  
Old 07-04-2017, 08:22 PM
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When I paid an independent shop to do a valve adjustment on both my S2000 & my ex-wife's Fit, it was around $200 per car.
 
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