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Delayed Ignition Beckett AFII

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Sask123
Sask123 Member Posts: 5
in Oil Heating

Looking for some help with delayed ignition as no one in my area has enough experience to troubleshoot. I had a used 4yo lennox furnace installed this year with a Beckett burner. Was working fine and recently started having "puff back" everytime it fires which I believe is due to delayed ignition. Also am noticing a pulsating vibration sound while burner is running which leads me to believe it's a fuel supply issue. Filter has been changed and new nozzle when furnace was installed. I do have a very minor leak in fuel supply line (one drop on floor a day type thing). Could this small leak draw in enough air between cycles or while pump is running to cause my issue? I open bleeder valve on pump and have no air bubbles or froth coming out. Any help would be much appreciated!

Comments

  • mattmia2
    mattmia2 Member Posts: 15,648

    what were the combustion numbers when it was installed?

  • Sask123
    Sask123 Member Posts: 5

    He never did one even after I asked

  • HVACNUT
    HVACNUT Member Posts: 7,244

    Shut the power, open the front door on the burner and look in to see if the both Igniter cables are connected to the electrodes. If its not as simple as that, you need to call someone who has a combustion analyzer. And knows how to use it. Bonus points for a smoke tester.

    SuperTech
  • Grallert
    Grallert Member Posts: 1,041

    were there any adjustments made to the burn recently?

    Miss Hall's School service mechanic, greenhouse manager, teacher, dog walker and designated driver

  • Sask123
    Sask123 Member Posts: 5

    That's the issue, no one will work on it. They all say change to propane and I'm not paying 8-12000$ CAN when I will only be in this house for a couple more years before I build. No adjustments besides weather being much colder. Nozzle was very dirty when the installer changed it out so wondering if maybe the screen on pump is plugged up?

  • Big Ed_4
    Big Ed_4 Member Posts: 3,369
    edited December 22

    Call your oil supplier for a recommendation of a local oil burner mechanic .. Someone that has worked for a oil company .. Your calling a upsell company, better to sell new ..

    The oil leak can suck in air if oil level falls below the leak or if you have overhead lines ..

    There was an error rendering this rich post.

    HVACNUTEBEBRATT-Ed
  • Grallert
    Grallert Member Posts: 1,041

    It sure sounds like a weak ignition. So it could be a few things The trans former or could be weak, the electrodes could be fouled or way out of adjustment or the air setting could be too high. This is why I asked. Big Ed has the right idea though.

    Miss Hall's School service mechanic, greenhouse manager, teacher, dog walker and designated driver

  • HVACNUT
    HVACNUT Member Posts: 7,244
    https://forum.heatinghelp.com/discussion/comment/1878575#Comment_1878575

    Have you checked the ignition cables? They sometimes pop off while sliding the assembly in. If one ignition cable is on, and the other is able to arc somewhere, it'll do what you're describing.

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 19,633

    I agree with @Big Ed_4

    Call your oil supplier. They can't sell you oil if the furnace will not run. If they don't do service, they must know someone that works on oil or they wouldn't be selling oil.

    They guy that started it up was a hack because he should have tested it with an analyzer.

    mattmia2Robert_HSuperTech
  • Sask123
    Sask123 Member Posts: 5

    Called oil supplier they said knew of one guy which I called and he's to busy to come look unless I have no heat. Believe I solved issue by fixing the leak and found gasket on blue site glass leaking. Sealed up and puff back seems to be gone. Closed air shutter more as well as there is a 6" insulated line from outside going into furnace room for combustion air.

  • gpjazz
    gpjazz Member Posts: 37

    Closing air shutter without checking combustion is asking for trouble….

    GrallertEBEBRATT-EdSuperTechrick in Alaska
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 19,633

    @Sask123

    Glad its running but you should see if you can have the OB guy swing by and check combustion so it will stay running.

  • Sask123
    Sask123 Member Posts: 5

    Yes I will be finding someone who knows how to run a combustion test and set it properly.

  • Big Ed_4
    Big Ed_4 Member Posts: 3,369

    Check your local part supplier for a recommendation , Sid Harveys would be a good bet..

    There was an error rendering this rich post.

    SuperTech

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