1959 - F.I. - Hot Starting Problems - NCRS Discussion Boards

1959 - F.I. - Hot Starting Problems

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  • Russ U.
    Expired
    • April 1, 2004
    • 345

    1959 - F.I. - Hot Starting Problems

    My 59 has been out of action for about 1 year - new engine, rebuilt tranny, etc. The car ran great when my mechanic handed me the keys. I fill the tank up at the local Chevron, and then within miles the engine started to miss at idle, and the car would barely start when hot. I suspect I pumped a delightful blend of winter/high ethanol % gas into my car at the Chevron station. The gas was boiling away on winter days where the outside temps were in the mid-50s.

    I spent yesterday trying to make the car run better. Two things seemed to have helped quite a bit

    1. My engine rebuilder installed a 180* thermostat in the car. I removed the 180* thermostat and replaced it with a 160* thermostat. This change helped the idle stability in a noticeable way and the hot starting problem somewhat. The 59 idles better now - not perfect but noticeably better. Hot starting was still a nasty problem, however, even with the 160* thermostat. So I focused on that problem separately.

    2. Researching the hot start issue on the various chat forums, I spotted a post by Jim Lockwood where he recommended leaving the hood of the car up when parked. So I gave that a shot. I first opened the hood up completely whenever I parked the car. Looks pretty silly to have your hood wide opened parked in front of the local hardware store, but what the hell. Leaving the hood wide open solved about 95% of the hot starting problem. Amazing. So I tried different approaches to see just how much the hood needed to be open to generate the same result. I tried just unlatching the hood, which didn't help at all. I then tried keeping the hood open with just a single tennis ball wedged between the end of the hood and the area next to the windshield. That generated only a slight improvement. I then tried the tennis ball can approach in the attached pic. Bingo!!!! The tennis can solves about 80% to 85% of the hot starting problem. Good enough, and it sure beats the heck out of propping the hood wide open. The exact technique is this - I pop the hood as I am getting ready to park. I shut off the car as soon as I stop. I get out of the car asap and open the hood completely, letting the contained engine heat escape. I then go back and lock the car. I finally close the hood, leaving it propped open with the tennis ball can.

    I suspect the government is going to continue to mandate changes to gasoline. Thus I fear the that we are going to have really bad gas boiling problem in the future. During my chat group research, I sptted a post indicating that one or more guys have installed systems to push cold air to the area under the doghouse. Does anybody have pictures of a setup like that?

    Thanks,

    Russ




  • Richard T.
    Very Frequent User
    • February 1, 1979
    • 858

    #2
    Re: 1959 - F.I. - Hot Starting Problems

    Very interesting Russ. I have a friend who removed the end of the fresh air hose from the heater box inlet and attached a small muffin fan that pulls fresh air from the grille area. Oh, and he has the fan outlet pointed at the F.I. plenum. He claims that it really helps the hot start problem.
    Rich

    Comment

    • Russ U.
      Expired
      • April 1, 2004
      • 345

      #3
      Re: 1959 - F.I. - Hot Starting Problems

      Originally posted by Richard Thomas (2276)
      Very interesting Russ. I have a friend who removed the end of the fresh air hose from the heater box inlet and attached a small muffin fan that pulls fresh air from the grille area. Oh, and he has the fan outlet pointed at the F.I. plenum. He claims that it really helps the hot start problem.
      Rich
      Neat info. Thanks Rich. I hate to ask, but....is there a way to get some digital pics of the setup? Also, to help the hot start problem, your friend must have a way to keep the fan going after he stops the car. Do you know or can you find out this level of detail?

      Thanks again,

      Russ

      Comment

      • Richard T.
        Very Frequent User
        • February 1, 1979
        • 858

        #4
        Re: 1959 - F.I. - Hot Starting Problems

        Russ,
        I'll try to get hold of him and ask about a picture. It actually looks a little strange, there's a 90 degree bend in the hose to point it at the plenum and I think he made a bracket to hold the fan. It attached to a valve cover bolt I believe. Also I think he mountd a toggle switch under the dash to power it.
        I usually see him at some of our local cruise nights which is how I noticed the setup. Rich

        Comment

        • Don H.
          Extremely Frequent Poster
          • December 1, 1981
          • 1487

          #5
          Re: 1959 - F.I. - Hot Starting Problems

          A higher grade of fuel (AV gas or racing fuel) will make it 90-95% better. Don H.

          Comment

          • John D.
            Extremely Frequent Poster
            • December 1, 1979
            • 5507

            #6
            Re: 1959 - F.I. - Hot Starting Problems

            Russ, Make sure you have the one piece base gasket between the FI and the base plate. It's 1/8" thick and covers the entire bottom of the FI. Original for 57 to 59 and retrofit for 60 -62.
            This helps a lot but still won't cure your problem.
            The problem is getting worse than ever with the low grade fuel we are forced to use. Boils at a low temp and is basically going to kill our old cars.
            Keep your eye on the FI for leaks as the ethanol is hard on the buna rubber parts. Also keep your eye on the engine fuel pump and rubber hoses.
            Here is a good one for you to look at. Make sure your repro fuel line going from the engine fuel pump to your FI fuel filter is not hugging the valve cover. If it is do whatever is necessary to massage the line for more clearance. Insulating this line with whatever helps also.
            Dale Pearman used to insulate the crap out of everything from the spider assembly, bottom of the base plate, under the base plate, and all fuel lines. Higher grade fuel helps a lot too.
            My 63, the LWC loves 100LL. Will sit there and idle in 93 degree weather going off and on the trailer without missing a beat. JD

            Comment

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