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Thread: 87 honda accord dx a20a idleing high

  1. #1
    DX User
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    87 honda accord dx 3 door hatch
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    Exclamation 87 honda accord dx a20a idleing high

    can some one help me out with a vacuum diagram for my accord it is idling high around 1500 rpm all the time and there are lines stopped up i know nothing about carbed Honda i just bought it for 700 i would like to get it running correctly so i can start on fixing up the out side and engine mods can any one help thanx

    oh and i turned the idle ajusting screw all the way and it still idles the same and if you have any idea of what it could be please let me know



  2. #2
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    Re: 87 honda accord dx a20a idleing high

    Not sure what you meant by "lines stopped up" but if you mean that it looks like the Vacuum lines have "messed with" by a previous owner - first step might be to take some pics of current arrangement (so you can get back to this if things go bad) Then - look for any damaged, stiff, cracked, or worn-out lines that need replacing. Replace them one at a time, and (if your hood is original to the car) also check them against the routing guide on the hood. If you have loose lines, use that guide to reconnect them. There is also a factory manual in this forum you can download and print that may help with both fixing lines an diagnosing the high idle. It includes vacuum diagrams if the one on your hood is missing/illegible - but you may have to do some comparisons to find the exact one for your engine.

    Be careful about turning screws if you are not sure what you are doing - you might make things worse or introduce another problem (maybe one that shows up later). If you changed an adjustment and it didn't help, return it to original setting.

  3. #3


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    Re: 87 honda accord dx a20a idleing high

    Make sure your throttle cable has some slack on it at idle. Some people think the cable sets the idle and it should not.


    wp
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

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  4. #4
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    Unhappy Re: 87 honda accord dx a20a idleing high

    well all it was was the timing was off at the distributor but i broke the fuckig spark advance i think that's what it is its got to vacuum lines coming out of it and the long arm goes into the distributor and hooks to a knob does any one know what that is exactly

  5. #5
    LXi User InAccordance's Avatar
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    Re: 87 honda accord dx a20a idleing high

    the vacuum lines from the dizzy hooked up or not shouldnt make it idle any different... well other than the line that was hooked into it is now creating a vacuum leak >.>

  6. #6
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    Re: 87 honda accord dx a20a idleing high

    thanks and i feel like a moron it was the ignition coil all though i have ran in to new problems

  7. #7
    3Geez Veteran
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    Re: 87 honda accord dx a20a idleing high

    Two threads are unnecessary.

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