Anybody know Honda engines ?

Discussion in 'Mechanic and Repair' started by TOOMUCHWALKING, Apr 10, 2008.

  1. TOOMUCHWALKING

    TOOMUCHWALKING LawnSite Member
    Posts: 167

    I have a GX 160 on my Trac Vac . It sat outside all winter ( as it has in winters past ) and didn't want to start . Wouldn't even cough with starting fluid , so I gave up . Next day it fired on the first pull , but then didn't run when I needed it to. Today it fired up nice and ran for an hour , then would not restart later. WTF ? I need this machine NOW . I disconnected the " low oil " sensor and it ran so I don't think that's it. Transistorized ignition unit , or dod the on/off switch go bad. I don't want to just throw parts at it. :hammerhead: :confused: :cry: :dizzy: Time for :drinkup:
     
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    From the above I gather it wouldn't start so you disconnected the "low oil" sensor then it did start but you don't think that's the problem ?
     
  3. TOOMUCHWALKING

    TOOMUCHWALKING LawnSite Member
    Posts: 167

    Right . I'm wondering if the on/off switches tend to go bad . Or do I need to go pick up a " transistorized ignition unit ". Is that the same as ignition coil assembly ? Thanks
     
  4. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    By un-plugging the low oil sensor then it cranks would tell me that is the problem, As long as you keep a eye on the oil level run it for a few days un-plugged and see how it goes.

    If it still acts up then disconnect the black wire from the kill switch that runs through a small hole behind the flywheel, This will eliminate the kill switch. If it still acts up with the switch disconnected the only thing left is the coil/module/ignition unit.

    If it runs ok with just the low oil sensor un-plugged replace that small module.
     
  5. TOOMUCHWALKING

    TOOMUCHWALKING LawnSite Member
    Posts: 167

    Everything disconnected except the wire to on/off switch . Ran fine this morning; started raining a bit and then it was done--may or may not be related . It was bulletproof until now...
     
  6. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    Well, Just try what I said and repair accordingly. These really are bullet proof little engines. Every unit I finish working on gets pressure washed afterward. Sometimes I will get one a little too wet around the plug wire/boot and they won't start, A little compressed air to dry them out and all is fine.
     
  7. Digdug

    Digdug LawnSite Member
    Posts: 125

    "You need to fill the oil." The wire you unplugged is keeping it from running becuase the oil it to low. It runs some times becuase it may be close to the kill level or you have it sitting at a different angle.
     
  8. TOOMUCHWALKING

    TOOMUCHWALKING LawnSite Member
    Posts: 167

    Thanks , Rob . I believe I'll just replace the switch and the module and be done with it .
     
  9. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    No Problem,

    When you install the new module pull it up away from the flywheel and just snug the screws. Rotate the magnet under the module then insert any business card (most are .010" and within spec) between the two, Loosen the screws and let the magnet pull the module to it. Put your finger on the top with light pressure while you tighten the screws, Rotate the flywheel to remove the card.
     
  10. Digdug

    Digdug LawnSite Member
    Posts: 125

    Why would you not try putting a little more oil in it? Maybe you have i dont know. But when you said it would not start so you disconnected the low oil sensor and it started . The first test would be to fill the oil. Then test the sensor with a ohms meter.
     

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