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  1. #1

    Join Date
    May 2004
    Posts
    3

    Default Engine problems.

    I've got a Case 310 (~1957) that has run and been cared for pretty well for many years. It currently runs very smoothly, but only for about 30 minutes, at which point it revs a few times and then konks out altogether. Attempts to restart it result in it running for a few seconds before it dies again. Letting it cool down for a few hours means I can run it for another 30 minutes or so before it dies.

    Ignition system seems fine -- getting healthy sparks in all the right places. There seems to be compression, otherwise it wouldn't run at all. Carb was cleaned not too long ago.

    Any suggestions?

    Thanks.

  2. #2
    Veteran Member BillyP's Avatar
    Join Date
    Dec 2002
    Posts
    1,769
    Location
    Eagletown, OK
    Tractor
    JD 4610 ehydro MFWD

    Default Re: Engine problems.

    You have some kind of fuel flow problem.

  3. #3
    Silver Member
    Join Date
    Mar 2004
    Posts
    105
    Location
    Ocean Springs Ms
    Tractor
    Kubota L4330HST

    Default Re: Engine problems.

    If the fuel flow is gravity fed, check the vent on the gas tank or gas cap whichever it has. It sounds like you are pulling a vacuum in the tank and running out of fuel. After you let it sit for a while, the vacuum equals out and fuel flows again.
    This only applies if it is gravity fed, if it has an electric pump, the pump could be getting hot and shutting down. If it has a mechanical pump, you could be getting vapor lock meaning that the fuel line is getting hot and vaporizing the fuel in the line and since the the pump will not pump air it the fuel has to cool down and return to liquid to flow again.
    Hope this helps
    Leroy

  4. #4

    Join Date
    May 2004
    Posts
    3

    Default Re: Engine problems.

    Good suggestions. There's no fuel pump, and since I've taken the gas cap off a few times during the period when it won't start (to make sure I wasn't being stupid and hadn't just run out of gas) that should eliminate any vaccuum problem, right?

  5. #5
    Super Member JerryG's Avatar
    Join Date
    Apr 2000
    Posts
    7,219
    Location
    Northwest Arkansas
    Tractor
    MF 1440-4 PowerShuttle

    Default Re: Engine problems.

    winton,
    I am guessing that this is a gas tractor. If it is, try a new condenser.

  6. #6
    Super Star Member Egon's Avatar
    Join Date
    Aug 2001
    Posts
    19,184
    Location
    Nova Scotia, Canada

    Default Re: Engine problems.

    I'll go with an electrical problem too. Runs long enough to heat up and then requires cool down before starting.

    I had a Briggs& Stratton 8 HP that used to do the same thing. It was a condensor as someone else has stated.

    Egon

  7. #7
    Veteran Member
    Join Date
    Jul 2003
    Posts
    1,168
    Location
    New Hebron, MS
    Tractor
    MF 1455v 4wd, 1040FEL

    Default Re: Engine problems.

    I had a '57 Ford automobile that behaved similarly. It would crank cold and run until warm and die. Someone told me to replace the coil and that fixed the problem. That was the only time I ever saw the problem, so it must be rare.

  8. #8
    Silver Member
    Join Date
    Mar 2004
    Posts
    105
    Location
    Ocean Springs Ms
    Tractor
    Kubota L4330HST

    Default Re: Engine problems.

    Winton,
    Taking the gas cap off would eliminate the vacuum problem. The surging a couple of times before it quits is a symptom of fuel flow problems. I am really not familiar with the fuel setup on your tractor, we had 9N Fords and a TO30 Ferguson. Does the tractor have a fuel filter/water separator with a clear bowl so you can see if gas is flowing? If so have you changed the fuel filter or cleaned the inlet screen on the filter/separator?

  9. #9
    Silver Member
    Join Date
    Mar 2004
    Posts
    101
    Location
    North West Louisiana
    Tractor
    Kubota L5030HSTC

    Default Re: Engine problems.

    Might be vapor lock? Check the routing of the fuel lines.

  10. #10
    Old Timer Soundguy's Avatar
    Join Date
    Mar 2002
    Posts
    51,547
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: Engine problems.

    I agree.. sounds like a fuel delivery problem.. it is starving and leaning out.. gov kick it up a couple times then dies.. carb bowl being empty.. restarts in a few minutes and quickly starves again as it sucks carb bowl empty.. let set.. and carb and fuel line recharge.. and runs again as before.

    Even if the carb is clean.. there may be an upsstream blockage.. or even vacume on the tank from a clogged tank vent..

    Soundguy

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