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  • studebakerkid
    replied
    Once you get all the things looked at and still cant find what it wrong it may be simply that you dont have enough of an ignition system to fire of what is passing for gasoline these days. My 65 was driving me nuts about a year back and I went through everthing and it still was starving out When I got up around seventy and tried to pull a hill. Turns out that I had two problems. THem Carbs on the 6 cyllinder Chevy bakers have a vaccume plug in the carb that can fall out and when that happens you dont have much venturi vaccum. THat will not be your problem but the other could be. I installed a Pertronix unit inside the distributor and wow what a change. The old girl drives like she used to a hundred thousand miles ago....

    If you car is ugly then it better be fast.....

    65 2dr sedan
    64 2dr sedan (Pinkie)
    61 V8 Tcab
    61 Tcab 20R powered
    54 Champion Wagon

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  • Guest
    Guest replied
    I'm still trying to figure out the problem. It runs fine for about 8 seconds at full throttle ...and then it looses power and starts backfiring. I put a clear plastic fuel filter in the line. I think I got a clue when I saw a bubble come thru the line. There was more air in the filter after I ran around town than there was before I started. It very well could be a pin hole somewhere between the pump and the tank. It all looks like it should be replaced anyway, so that's the next project. Unfortunately, I might not have a day off to get the supplies and do the job for about three weeks .....so until then, I'll just have to drive around town.
    LarkMark

    MARC
    Punxsutawney, PA

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  • Lark Parker
    replied
    Had a 48 Champ once that would not rev past a certain point. The throttle linkage was pushing the coil wire out of the top of the coil. When the accelerator was let up, the wire would spring back and make contact again.

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  • Chicken Hawk
    replied
    You have had all kinds of suggestions so I'll throw in another one. Check the distributor wires inside the cap. It has been known to have a bare wire that would short out as the distributor advances and/or retards. Since it would be retarding as you start up a hill (or depress the accelerator)this is a possibility.

    Ted

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  • Guest
    Guest replied
    You don't think the problem could be a weak valve spring?

    1955 President

    Location: Central PA
    Job: Student @ Penn State
    Love of Studebakers?: High

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  • Roscomacaw
    replied
    Boy, that tale brought back a memory I hadn't recalled is some time, Nate.[B)] I had a Stude some time ago (don't remember which one it was even!) that was giving me fits with it's unpredictable stalling.
    Turned out there was a whole shop rag floating around in the damned gas tank. You might drive for some miles before it would get sucked against the pickup tube - and then you might not make it out of the driveway.
    All I could figure was someone had used the rag as a temporary gas cap at one time or another and it either got sucked into the tank or someone pushed it in in a moment of devilry.[}]

    Miscreant at large.

    1957 Transtar 1/2ton
    1960 Larkvertible V8
    1958 Provincial wagon
    1953 Commander coupe
    1957 President 2-dr
    1955 President State
    1951 Champion Biz cpe
    1963 Daytona project FS

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  • N8N
    replied
    reminds me of a similar problem I had with my Daytona... what the problem ended up being was a small, hard, red cloth-like piece of something that was just big enough to get sucked up against the pickup in the tank. I fixed just about everything else on that car before I checked the tank, because I'd just cleaned the tank maybe 6 mos. earlier!

    I still have no idea what it was or how it got in there, but there it was, and once I got it out of there and cleaned the inside of the tank again the car ran fine.

    nate

    --
    55 Commander Starlight
    62 Daytona hardtop
    http://home.comcast.net/~njnagel

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  • Roscomacaw
    replied
    Have you TRIED driving it with the gas cap loose yet?????????[?] Don't do it with a full tank of gas. If you charge up a hill, a full tank might slosh out the open filler neck.[:0]

    Miscreant at large.

    1957 Transtar 1/2ton
    1960 Larkvertible V8
    1958 Provincial wagon
    1953 Commander coupe
    1957 President 2-dr
    1955 President State
    1951 Champion Biz cpe
    1963 Daytona project FS

    Leave a comment:


  • Guest
    Guest replied
    Somebody just told me that the fuel tank vent plugged in his Camaro. He said there was a bang and soon after, the engine shut off. The vacuum in the tank had crushed the tank flat!! So, I guess there's plenty of suction to bring fuel through a fuel filter!

    I changed the filter to a clear filter to see what the fuel flow is like. I don't see any bubbles coming through that would indicate a leak. I didn't get a chance to drive it yet, however.

    I took the fuel line off the carb and ran fuel into a container for about 8 seconds (at normal idle). I got over a cup of gasoline. The flow of fuel appeared to be good.

    Checking the fuel line from the tank, I see somebody has replaced about 2/3 of it with rubber hose. I think I'll buy some metal line and some new rubber hose and replace the entire fuel line.

    The other unknown, is the inlet in the carb. Maybe the fuel float valve is dirty and semi-plugged. It's a rebuilt Carter carb that is on the car.

    MARC
    Punxsutawney, PA

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  • Roscomacaw
    replied
    Not true. Probably better to have it there as it protects the fuel pump's valves from being put out of action by a piece of crud.

    Miscreant at large.

    1957 Transtar 1/2ton
    1960 Larkvertible V8
    1958 Provincial wagon
    1953 Commander coupe
    1957 President 2-dr
    1955 President State
    1951 Champion Biz cpe
    1963 Daytona project FS

    Leave a comment:


  • Guest
    Guest replied
    On my old Chryslers, the fuel filter is located between the fuel pump and the carb. On the Studebaker, it is in the line between the pump and the gas tank. Is this the normal place? I would think that it would be harder to suck the gas through the filter than to push it through.

    LarkMark

    MARC
    Punxsutawney, PA

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  • Roscomacaw
    replied
    DEEPNHOCK gave you a clue earlier that might be worth checking out. This could be a symptom of improper venting of the gas tank. When you reach a point where the fuel pump is drawing fuel faster than the hampered venting of the tank can allow for, a vacuum develops in the tank and the pump can't draw enough to meet demands. A starving engine is likely to backfire as it starts to run too lean.
    Try duplicating your malady with the gas cap removed one time.
    This can happen due to an improper cap OR the venting line of the tank. You noted that this started on a slight hill. This would send the gas in the tank rearward to where it would cover the vent line I would think. Either way - easy to check out. We've seen this sorta problem before, so it's not just wild speculation.

    Miscreant at large.

    1957 Transtar 1/2ton
    1960 Larkvertible V8
    1958 Provincial wagon
    1953 Commander coupe
    1957 President 2-dr
    1955 President State
    1951 Champion Biz cpe
    1963 Daytona project FS

    Leave a comment:


  • Guest
    Guest replied
    I still haven't figured it out, but then I haven't had much time off to look at it. I did discover that the wire to the condensor in the distributor was hitting the rotor. I fixed that, but the problem remains. It runs fine for 5 seconds or so, and then it losses power and starts to backfire. You have to be pushing it pretty hard for it to happen at all. I'm thinking it's fuel supply, though I can't figure out why. I didn't think of soft hose collapsing; I'll check that out. I once had a new defective fuel pump in my Chrysler that quit completely in 500 miles, so I'll check that out. I do think the tank is venting OK, and I believe it happens too quick for it to be that. I set the points, and checked the vacuum advance and the timing is at the same place it was before (slightly advanced from the mark. I checked the spark plug gap (set at .030). I purchased a clear fuel filter to check the fuel for bubbles coming through the line, but I haven't had time to install that yet. Maybe tomorrow I can find a few minutes to work on it,
    Thanks for the suggestions!
    LarkMark

    MARC
    Punxsutawney, PA

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  • GTtim
    replied
    I'll bet on a fuel supply issue. Crud in the tank, soft rubber hose collapsing, bad new fuel pump, pinhole in the fuel line, plugged tank vent tube. Take the gas cap off and see if still happens.

    Tim K.
    '64 R2 GT Hawk

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  • curt
    replied
    Are these cars 4000rpm engines? That seems to be the upper end. What is the "red line"?

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