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Lawn Mower repair HELP

Discussion in 'Other Off Topic Forum' started by jimpo1, Dec 31, 2015.

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  1. jimpo1

    jimpo1 Two Time F1 World Champ
    Owner Silver Subscribed

    Jul 30, 2001
    24,903
    Dallas, TX
    Full Name:
    Jim E
    #1 jimpo1, Dec 31, 2015
    I have an old Honda lawn mower that would start but not run. It's happened before and has always been a gunked up carb problem. My mechanical skills are limited, and I really don't want to spend $80 to have my 20 year old mower repaired. I have others but the Honda is a favorite and I don't mow much. Rather than pay to have it rebuilt again, I bought a brand new carb and put it on.

    Same problem. Will start, but won't run. I know its not the carb! It acts like its not getting gas, but the fuel system is pretty simple: a tank and a line to the carb. Both are fine.

    Thoughts?
     
  2. tundraphile

    tundraphile F1 Veteran

    May 16, 2007
    5,083
    Missouri
    #2 tundraphile, Dec 31, 2015
    Vent on cap of gas tank plugged? This would explain it if it took a few minutes to die
     
  3. Miltonian

    Miltonian F1 Veteran

    Dec 11, 2002
    5,966
    Milton, Wash.
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    Jeff B.
    #3 Miltonian, Dec 31, 2015
    There is often a screen inside the fuel tank where the outlet hose is fitted, and this can become restricted due to contamination in the tank (grass/rust/etc.). You might want to just unhook the fuel line from the carburetor, put some gas in the tank, and open and close the fuel shutoff valve a few times. Is fuel actually flowing through the hose? It's gravity feed, not from a pump, so it needs to be clear.
     
  4. JasonMiller

    JasonMiller F1 Rookie
    Silver Subscribed

    Jul 16, 2004
    3,649
    Co Springs/ Texas
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    Jason Miller
    #4 JasonMiller, Jan 1, 2016
    Yes! You are having a venting issue, just bring it over to my house and I will fix it right up. :)
     
  5. beast

    beast F1 World Champ

    May 31, 2003
    11,479
    Lewisville, TX
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    Rob Guess
    #5 beast, Jan 1, 2016
    I have seem the intake valve start to stick in the guide on a few of the older Hondas. Adding Techron to your fuel helps to keep the stems clean. Also might want to chec valve clearances.
     
  6. zudnic

    zudnic Formula 3

    Nov 13, 2014
    1,896
    Vancouver
    #6 zudnic, Jan 1, 2016
    Last edited: Jan 1, 2016

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