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B16a 1st Gen low rpm misfire under load

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This topic contains 5 replies, has 6 voices, and was last updated by Uros Kocjancic Uros Kocjancic 7 months ago.

  • Creator
    Topic
  • #444197
    Jac
    Jac
    Participant

    I have a CRX with a B16a 1st Gen OBD0. It has developed a misfire under load at low rpm. When revs are at about 1500rpm, I put my foot down say 20% throttle, it misfires once or twice until revs climb to 2500rpm, then will rev without missing all the way to redline. The misfire doesn’t happen in neutral. Compression seems to be fine, no dramatic loss in power but about 10% more fuel consumption. ECU not throwing any codes. Found oil in the distributor, TDC magnetic sensor – pulled it all apart and cleaned thoroughly – made no difference to misfiring. Recently replaced timing belt, plugs and adjusted valves. Does this sound like the compression, fuel or ignition problem? What should I check? Any ideas would be much appreciated. Thanks 🙂

Viewing 5 replies - 1 through 5 (of 5 total)
  • Author
    Replies
  • #444198
    dreamer2355
    dreamer2355
    Participant

    Misifres are usualy down to ignition issues. Do you have the tools to stress the ignition system under load?

    #444199
    Third Gear
    Third Gear
    Participant

    Right, and for #2 I would say fuel issues. Maybe the fuel pressue is slightly out of spec or the regulator isn’t working properly and it only misses with specific conditions.

    Check ignition system and fuel first.

    #444200
    Trcustoms719
    Trcustoms719
    Participant

    +1 on check the fuel pressure an stress testing the ignition system.

    #444201
    EricTheCarGuy 1
    EricTheCarGuy
    Keymaster

    Honda misfires under load are almost always ignition related. It is very important that you use the correct parts on the ignition system of that engine, NGK or Nippon Denso plugs only, NGK or OE wires only, OE cap and rotor are great but less of an issue than the other parts in my experience. Given that you already had oil in the distributor that’s not a good sign, it usually means you need to replace the sub assembly but once again OE parts here are a must, I’ve seen tons of problems with aftermarket distributors for Hondas. Here is a video on how to find ignition voltage leaks.

    http://www.youtube.com/watch?v=x-U9WqJfaJs

    #989010
    Uros Kocjancic
    Uros Kocjancic
    Participant

    Hi, have you figured out what was the issue?

Viewing 5 replies - 1 through 5 (of 5 total)

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