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Technical 1952 inline 8 not starting

Discussion in 'The Hokey Ass Message Board' started by dan coldwell, Oct 24, 2023.

  1. ClayMart
    Joined: Oct 26, 2007
    Posts: 7,793

    ClayMart
    Member

    Doesn't seem like it should build pressure on the exhaust stroke as long as the exhaust valve is opening, unless the exhaust system was plugged solid.
     
  2. dan coldwell
    Joined: Oct 24, 2023
    Posts: 14

    dan coldwell
    Member
    from Akron ohio

    Thanks for the input.
    So I checked to make certain that #1 cylinder was on the compression stroke or top tdc.
    Held my finger in the spark plug hole and felt a lot of pressure basically blew my finger out.
    Then checked with a flash light to visually see it come to the very top. Then set the values again…to make sher it’s not out 180.

    I set the valves to 1 and 1/2 turns down after the play was taken out of the rods the shop manual calls for 2-3 turns.I had people suggest.3/4 of a single turn down(I tried this but no difference)so I guess I will keep trying things…

    I did feel about 1/4 of the pressure through the spark plug hole on the exhaust stroke.

    I checked to see if the distributor was firing number one on the compression stroke tdc and it was showing that.
    I even took the spark plug out and stuck my finger in the spark plug hole to feel the pressure and I looked to see if the spark was “timed”at the same time, and it was.

    Fuel is getting into the carburetor fine.
    Sparks are strong
    I cranked it till the starter started to smoke it didn’t even try to fire.
    Sprayed starter fluid into the carburetor still nothing not even a sound like it might be trying to start…

    what am I missing…
     
  3. 57Fury440
    Joined: Nov 2, 2020
    Posts: 536

    57Fury440
    Member

    Are your sure that you are getting good spark to the plugs. It should at least spit or kick or something if it is getting spark.
     
  4. dan coldwell
    Joined: Oct 24, 2023
    Posts: 14

    dan coldwell
    Member
    from Akron ohio

    Yea
    I have pulled all of them it’s whitish red.

    not hard to see even in the daylight.
     
  5. BJR
    Joined: Mar 11, 2005
    Posts: 11,277

    BJR
    Member

    Whitish red is not a good spark. It should be bluish and you should hear a snap when it fires a plug wire on a ground.
     
  6. dan coldwell
    Joined: Oct 24, 2023
    Posts: 14

    dan coldwell
    Member
    from Akron ohio

    Ok

    how do I get a good spark?
    I replaced spark plugs
    Rotor and cap
    Coil
    New battery
    What else can I do?
     
  7. Condenser. If it has a condenser on the coil for radio interference suppression, disconnect it for trial. Then make sure the points have good clean contact faces and are closing squarely.
     
  8. BJR
    Joined: Mar 11, 2005
    Posts: 11,277

    BJR
    Member

    Also if the above doesn't fix the spark, change the condenser in the distributor. You may even try running a hat wire directly to the coil, to eliminate bad wiring.
     
  9. Tow Truck Tom
    Joined: Jul 3, 2018
    Posts: 3,424

    Tow Truck Tom
    ALLIANCE MEMBER
    from Clayton DE

    Been watching and wondering. Might get some s*** but.
    Are we sure nothing got into the intake?
    Great, now comes the howls. Decades ago when when we were sure tha all had been done;
    Still no result we use either a tow or a pusher ( prefer pusher ) and make that baby recall what running feels like by dragging or shoving it for a good mile or two.
    The 3 rimes I 've done it, it worked
    So, just awoke and recall that this will be OK if you are using a hydromatic or a stick trans. Later auto matics dropped the use of a rear pump, which would cause damage to the trans if flat towed or shoved a distance
     
    Last edited: Nov 6, 2023
  10. d2_willys
    Joined: Sep 8, 2007
    Posts: 4,343

    d2_willys
    Member
    from Kansas

    He either has a stick or a Dynaflow which does have a rear pump. It can be push started.
     
    SS327 likes this.
  11. ClayMart
    Joined: Oct 26, 2007
    Posts: 7,793

    ClayMart
    Member

    Sort thru the ignition and see if you can get a good blue-white spark from the plug wire terminal to a known good ground. Should be able to jump around a 1/4" gap.

    Stop cranking the starter for extended periods. Hopefully you haven't "let all the smoke out of the starter" or killed the battery. Starter motors draw a ton of amperage, especially on 6 volt systems.

    I'd want to check the cranking manifold vacuum at this point. Here's a link that explains the procedure and there's plenty of other online references too.


    https://www.jalopyjournal.com/forum...p 3-5 inchs of manifild vacuum while cranking.

    Be sure the spark plugs are installed and disable the ignition for the test. Make sure the throttle is completely closed and disconnect and plug any vacuum hoses connected to the intake manifold. The engine should be able to pull at least 3" or so of vacuum while cranking. No vacuum means it can't draw the air/fuel mixture in to the combustion chamber.
     
  12. Wanderlust
    Joined: Oct 27, 2019
    Posts: 1,080

    Wanderlust

    You mentioned that the vehicle sat for 4 months, that’s plenty of time for rodents or bees/wasps to build nests, I would suggest verifying the exhaust is not plugged, disconnect at the manifold ( use care not to break bolt/studs) and use a shop vac to **** on the tailpipe, a leaf blower can work too but blow through from the front. I see you fired the parts cannon already but you made no mention of new plug wires, might as well at this point, may solve the weak spark.
     
    Tow Truck Tom likes this.
  13. tubman
    Joined: May 16, 2007
    Posts: 8,212

    tubman
    ALLIANCE MEMBER

    Tow Truck Tom likes this.
  14. BJR
    Joined: Mar 11, 2005
    Posts: 11,277

    BJR
    Member

    The car will start with a plugged exhaust, just will not run for very long and will sound very funny. When we wanted to mess with someone we would put a potato in their tailpipe. Push it in far enough with a stick so it couldn't be seen. The car would go a block or so until enough back pressure stopped the engine. Five minutes later it would run again.
     
  15. Try this- pull the first 3 spark plugs and give each cylinder a robust shot of starter fluid. Replace the plugs quickly and try to start it. If it does not at least give you an attempt to fire up, you have inadequate spark.
     

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