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Technical Engine trouble

Discussion in 'The Hokey Ass Message Board' started by Rex Jolles, Apr 28, 2021.

  1. Hey guys, my car has had some trouble recently. It starts up but it doesn't idle, you have to keep your foot on the gas and even then it misses. I know the carb needs adjustment, it runs a little rich, but it was driving fine before. I thought maybe it had something to do with bad spark plugs or timing or something, any ideas?
     
  2. 2OLD2FAST
    Joined: Feb 3, 2010
    Posts: 5,257

    2OLD2FAST
    Member
    from illinois

    Gonna need way more info than that .
     
    Hollywood-East likes this.
  3. Dooley
    Joined: May 29, 2002
    Posts: 2,964

    Dooley
    Member
    from Buffalo NY

    Had a valve spring break that caused similar issues can you check them?
    Also what kind of engine?
     
  4. squirrel
    Joined: Sep 23, 2004
    Posts: 56,043

    squirrel
    Member

    Timing usually doesn't change all by itself. Spark plugs will get fouled all by themselves, though. Also, points wear out, condensers go bad, carbs have screws get loose, they get dirt in them, etc.

    If you want to pull the spark plugs, you can see if any of them are fouled. You can also remove the distributor cap, and watch the points as you turn the engine over by hand, see if the points open and close, and look to see how pitted they are.

    Look at the carb, wiggle it to see if it's loose.

    In other words, look at stuff, and see if you notice anything amiss. Don't go wild though, do one thing at a time, learn about it before you start working on it.
     

  5. Sounds like you've sucked some crud into the carb. Get it running, crank it up and choke it with your hand, see if it pulls it through and clears it up. What engine/ carburetor are you dealing with?
     
  6. Get a vacuum gauge , cheapest and one of the easiest tools you can use to diagnose running conditions.

    with it running rich I would be looking at:
    Fouled plugs
    Vacuum leak
    Dirty/plugged carb or air filter
    Plugged fuel filter
    Points
    Condenser

    as these are things that can just “crap out” on there own.

    if these simple things don’t fix it, you will need to dig deeper. Usually it’s a simple fix don’t over think it.

    KISS
    Keep
    It
    Simple
    Stupid ;)

    As squirrel said, do one thing at a time and check to see if it fixed it, or possibly made your situation worse.
    Nothing can get you ass over tea kettle faster then farting around with a bunch of things all at once , now you have an issue and no clue what caused it.


    Good luck , keep us posted.
     
    brushwolf, fauj, Stogy and 3 others like this.
  7. Alright, well it's a 8ba flathead, stock carb, a little leaky though. Smoke comes out the oil filler tube when it's running, the thing shakes like hell, it can't have sucked anything in there, the carb works fine, gets gas in there good, if you choke it too much it makes a grinding noise and dies, no real rhythm to the misses, just randomly popping and missing, it's got premium in it if that helps, the spark plugs are pretty much new, so are all the plug wires and distributor.
     
  8. 8ba flathead, stock everything. I probably could check it out. Was fine until a few days ago when it stalled out and now it's a mess
     
  9. 51504bat
    Joined: May 22, 2010
    Posts: 4,785

    51504bat
    ALLIANCE MEMBER

    Fiber cam gear?
     
  10. Ok.
     
  11. Christ, I have no idea
     
  12. chop&drop
    Joined: Oct 11, 2006
    Posts: 668

    chop&drop
    Member

    Vacuum leak at carb base?
     
  13. Yeah that's probably it. There is a fuel leak down there so it could be
     
  14. 31Apickup
    Joined: Nov 8, 2005
    Posts: 3,378

    31Apickup
    Member

    Elcohaulic likes this.
  15. 6sally6
    Joined: Feb 16, 2014
    Posts: 2,467

    6sally6
    Member

    How old is the fuel?! (I use the term 'fuel' looselly....its mostly water with just-a-hint of gasoline!)
    Car been sitting up a while?
    (Why do you make us GUESS what the problem is?) Please give us ALL the information you possibly can so we can maybe get it right and get you back on the road!
    6sally6
     
    Desoto291Hemi likes this.
  16. The gas is a week old. Exxon premium. Mixed with the 14 year old crap that was in it when I got it. Half tank full. I think it might be a vaccum leak or a spark plugs bad or something, it was fine when I looked at it, and when we got it it drove home fine, then I started it one day and it was all sputtery so I looked under the hood and I think it's a leak of some sort or a spark issue.
     
  17. Sooooooooooo......ummmmmmmmm.......hmmmmmmm:confused:

    old gas
    Leaky carb
    Lots of what sounds like blow by
    Car that sat for 14 years
    Been driving it without any inspecting if anything ??

    Son, I need the truth, the whole truth and nothing but the truth.

    right now your story is going from bad to worse, sounds like me when I was 14 getting home after stealing my dads home made wine and getting drunk n stoned in the park !!
    Ya dad I was doing home work at jennys house, ya ya I was a joes playing basketball ,...... well ... first I ate a sandwich, then I smoked a joint .... I mean ummm home work yeah :D


    So please, why don’t we start at the beginning.
    Cause right now I think what will fix your issue is a ham on rye and a Budweiser.
     
  18. 302GMC
    Joined: Dec 15, 2005
    Posts: 7,867

    302GMC
    Member
    from Idaho

    Well, if the dist. was ''new'', it likely had no cam lube ... you've run it just long enough for the points to close up from lack of lube ..
     
    54EARL likes this.
  19. twenty8
    Joined: Apr 8, 2021
    Posts: 2,345

    twenty8
    Member

    .............:eek::eek::eek:

    This would appear to be a simple and sensible place to start.............
     
    Hnstray, Murphy32, Cosmo49 and 3 others like this.
  20. The thing drove fine, it was driven 432 miles over the 14 years, but yeah it was fine until all of a sudden it just won't idle and misses. But dad's coming over Sunday and we'll work it out
     
  21. fastcar1953
    Joined: Oct 23, 2009
    Posts: 3,607

    fastcar1953
    Member

    Time to clean the gas tank and fuel line with new filter. Put fresh gas in it. Rebuild the carb . Tune up.
     
  22. badshifter
    Joined: Apr 28, 2006
    Posts: 3,538

    badshifter
    Member

    Everything works fine until it doesn’t. That’s the nature of almost every problem. But to get good help or advice, you have to give good information. So far, not much to go by on your end. Old, bad gas causes all kinds of problems, not the least of which is sticking valves in the guides. And diluting old gas with new does not cure the problem. But that information maybe totally useless if your points are bad, condenser is bad, plugs are bad, rings are bad, head gasket is bad, etc etc etc.

    You need a methodical inspection. “Carb is fine, gas gets in there good” is the opposite of a methodical inspection. Good luck.
     
    Hemi Joel and VANDENPLAS like this.
  23. nochop
    Joined: Nov 13, 2005
    Posts: 3,836

    nochop
    Member
    from norcal

    First thing I would do, don’t use a handkerchief to get a better seal.......
     
  24. twenty8
    Joined: Apr 8, 2021
    Posts: 2,345

    twenty8
    Member

    Should we ask how you know this ???.......o_O:D
     
  25. Hollywood-East
    Joined: Mar 13, 2008
    Posts: 1,997

    Hollywood-East
    Member

    I would pull the carb an clean it, Put a clear filter in an observe the fuel, Also on anything sitting 14 yrs. You should change the fuel pump, check your dip stick to make sure gas isn't being pumped into crankcase...
     
  26. twenty8
    Joined: Apr 8, 2021
    Posts: 2,345

    twenty8
    Member

    Hey @Rex Jolles , stick with it. Most of the guys replying probably don't even know that you are only 15 years old. All of us started somewhere. Try and find someone close that can help you out.
    What about it guys, anyone in Philly with some spare time to get a keen kid on the right track ???
     
  27. oldiron 440
    Joined: Dec 12, 2018
    Posts: 3,320

    oldiron 440
    Member

    Bad gas, gas tank, pluged fuel filter. Dont be surprised if you overhaul the fuel system.
     
  28. nochop
    Joined: Nov 13, 2005
    Posts: 3,836

    nochop
    Member
    from norcal

    Dumb idea #27....
     
    twenty8 likes this.
  29. i have this place I hang out at, i would ask them but they don't have a real schedule so they've been closed for a while
     
  30. Didn’t realize you where 15, good on ya for wanting to try and learn.

    it can be very difficult to diagnose something over the internet.

    the more you can tell us, and the more details the better, pic or a video can help as well.

    go back to my first post and start checking things off the list.

    loose carb
    Vacuum lines of or damaged
    Fuel line off or damaged
    Distributor loose
    Junk in the fuel
    Plugged filters
    Excessive gas ( bad fuel pump)
    Not enough gas
    Bad ignition parts
    Bad cool
    Bad wiring
    Could be internal in the engine
    Tight valves
    Stuck valves
    Valve springs
    Timing gears
    Etc etc

    I had an old Buick that ran like a champ and all of a sudden developed a miss, after checking it was either a cracked piston or ring causing low compression in one cylinder. Not saying this is what your issue is, but you got to start knocking stuff one by one off the list.

    buy a vacuum gauge! It will help you for the whopping $9.99 one costs !
     

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