'74 w/ 304 No fuel to Carb

Discussion in 'General IH Tech' started by Travis Morgan, Jan 24, 2020.


  1. Jeff Jamison

    Jeff Jamison Lives in an IH Dealership

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    Just because the pump is new doesn't mean its good,I had a brand new one bad.I would put a hose from a can of gas to the fuel pump and see if it picks up gas that way.You will see gas in the filter,but wont be full.
     
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  2. RinTX

    RinTX High Wheeler

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    There are plenty of tales buried on this board of - it can’t be the _______ it’s brand new. 3 pages later - well it turns out the brand new _____ was bad out of the box. Don’t assume that fuel pump is good.
     
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  3. Travis Morgan

    Travis Morgan Farmall Cub

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    Odds of back to back failed pumps? I guess I can try the remote tank to remote tank test to rule out another shit pump
     
  4. scoutboy74

    scoutboy74 Lives in an IH Dealership

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    Yeah, that's all part of a diligent diagnostic process...verifying rather than assuming.
     
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  5. Travis Morgan

    Travis Morgan Farmall Cub

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    OK, since I only get like an hour a day to work on this here’s what I got. Took off the line coming from the tank and lowered it into a 5 gallon on the ground. It kept draining and siphoning for five minutes so I’m thinking that line is perfectly fine.Pulled the line going into the carb and put it in a clear bottle and started cranking and gas pumps forcefully and immediately so the pump is good. Plugs are dry, not flooded. I’m thinking it’s something internal with the carb now which was just rebuilt last year. Where would be a good place to start on that? Accelerator pump? It’s a Holly 2300 I believe
     
    Last edited: Feb 14, 2020 at 10:54 AM
  6. scoutboy74

    scoutboy74 Lives in an IH Dealership

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    Good work. Now, please post pics of the carb. Also one of the airhorn where all the little numbers are stamped in so we can make positive ID. If it is a 2300, there's a brass sight plug on one side of the fuel bowl. Also, the fuel bowl can be removed while the carb is installed. There has to first be fuel in the bowl before you can worry about anything else internally. Either the float level might be wrong, or there's a blockage between the pump and the bowl.
     
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  7. Dana Strong

    Dana Strong Lives in an IH Dealership

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    Why not first check the inlet filter you asked about a few posts above? Then verify fuel is getting in through the float valve by checking the fuel level after removing the sight plug. Both are done with the carburetor in place and not disassembled, both give important information, so can be normal steps of a rational systematic diagnostic procedure, something which has been alluded to a few times here as being useful.
     
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  8. Travis Morgan

    Travis Morgan Farmall Cub

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    Gonna do all that. Like I said I get an hour at a time to work on this since it’s currently in my warehouse. I’ll look at all that this afternoon when I go back
     
  9. scout2000

    scout2000 Dreams of Cub Cadets

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    a Strong +1 on requesting those pics.

    An incredibly strong troubleshooting tool, when attempting to diagnose a problem over the Internet.
     
  10. Travis Morgan

    Travis Morgan Farmall Cub

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    D23E9C1E-5B33-4462-BCE9-7F40D968469A.jpeg 216EFB5A-0381-4822-9415-0B0AFAC4852D.jpeg 95A399EC-50A5-4663-AE9B-C4081C7965A8.jpeg D23E9C1E-5B33-4462-BCE9-7F40D968469A.jpeg 216EFB5A-0381-4822-9415-0B0AFAC4852D.jpeg D23E9C1E-5B33-4462-BCE9-7F40D968469A.jpeg 216EFB5A-0381-4822-9415-0B0AFAC4852D.jpeg
     

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  11. Travis Morgan

    Travis Morgan Farmall Cub

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    Not sure if those double posted but here you go.
     
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  12. Dana Strong

    Dana Strong Lives in an IH Dealership

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    Holley shows List 6317, a 2300C, as having been for a 1971 Ford Marine 302 engine w/ auto Electric choke. List 6317-1 was for a 1972, same application.
     
  13. Travis Morgan

    Travis Morgan Farmall Cub

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    Ok thanks, guessing it’s still compatible
     
    Last edited: Feb 14, 2020 at 3:39 PM
  14. winchested

    winchested High Wheeler

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    #1 unplug the choke heater for now. And manually open the choke when you're trying to start it other wise it's going to go wide open within 5 min of ignition being on.
     
  15. scoutboy74

    scoutboy74 Lives in an IH Dealership

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    "Compatible is as compatible does" -- Forrest Gump
    I guess so if you plan on launching your Scout into the nearest lake to do some boating. If you're not too married to that carb, I think you'll be a lot of time and frustration ahead to shit can it in favor of a Holley 0-7448 or 80350. Either of those would have you chirping rear tires in your driveway almost instantly.
     
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  16. Travis Morgan

    Travis Morgan Farmall Cub

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  17. scoutboy74

    scoutboy74 Lives in an IH Dealership

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    Yep. Spend some time shopping around. Maybe you can find it for a little less. I know it's a big chunk of coin all at once, but I just foresee a bumpy road ahead for you as long as you have that 6317 on there.
     
  18. TBAKPhi22

    TBAKPhi22 Binder Driver

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    Sounds like the float valve in the carb is stuck. Same thing happened to me... Took my edelbrock 4bbl off for a few months while I rebuilt the engine. Put it back on, and it ran fine when I did the break-in on the new engine. Next day I tried to run it, and it was basically running on 4 cylinders- The float valve on one side was stuck and not letting any fuel in. Took it apart and cleaned it up and its been fine since.
    Since you have the holley, you could just take the valve out of the top of the bowl and check, or just take the bowl off and see whats going on.
     
  19. Travis Morgan

    Travis Morgan Farmall Cub

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    I figured it was not the right one from the start with the fuel inlet pointing directly into the back of the thermostat housing. That was a pain in the ass to plumb. seemed wrong but it came with the scout so I made it work
     
  20. Dana Strong

    Dana Strong Lives in an IH Dealership

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    I would do the basic tests regarding the filter and float to see if I could get the engine to run half-decently with it, for now. Since it "ran fine" before being parked, it should run as well now if you find only one of those two is causing the problem.
     

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