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Is this new or used?

ChrisJ
ChrisJ Member Posts: 16,360
in THE MAIN WALL
Is this spark plug new or used?

Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

Is this new or used? 11 votes

New
27%
GordySteve Thompson (Taco)njtommy 3 votes
Used
72%
Charlie from wmassZmanSolid_Fuel_ManLeon82SuperJ1Matthiaskelchmethicalpaul 8 votes

Comments

  • ChrisJ
    ChrisJ Member Posts: 16,360
    Sorry, here's the picture.

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • hot_rod
    hot_rod Member Posts: 23,816
    used our corroded from lying around?
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
    ChrisJrick in Alaska
  • ChrisJ
    ChrisJ Member Posts: 16,360
    > @hot rod_7 said:
    > used our corroded from lying around?

    You gotta vote for one or the other :)

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • aceboiler
    aceboiler Member Posts: 14
    If it goes to a Hydropulse, new. A vehicle, used. :)
    Solid_Fuel_Man
  • Bob Bona_4
    Bob Bona_4 Member Posts: 2,083
    Used and running lean as heck
    1Matthias
  • ChrisJ
    ChrisJ Member Posts: 16,360
    > @aceboiler said:
    > If it goes to a Hydropulse, new. A vehicle, used. :)

    Its for an engine.

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • 1Matthias
    1Matthias Member Posts: 148
    Used
    Bob Bona_4 said:

    Used and running lean as heck

    Yep. Running that lean, it's a miracle a piston hasn't melted or a rod come out the side of the block...
  • Gordy
    Gordy Member Posts: 9,546
    New
    NOS
  • ChrisJ
    ChrisJ Member Posts: 16,360
    The application for the plug is a Briggs and Stratton Vanguard vtwin. Carburetted.

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • Solid_Fuel_Man
    Solid_Fuel_Man Member Posts: 2,644
    edited December 2018
    Used
    Used for short time. The ground electrode is very light indicating very lean conditions and hot running (air cooled). A proper color for a typical carbed small engine is a light chocolate brown.

    Modern computer managed engines with a host of sensors whose plugs may read a very light brown as that are more on the lean edge of stoichrometric conditions.
    Serving Northern Maine HVAC & Controls. I burn wood, it smells good!
  • Gordy
    Gordy Member Posts: 9,546
    New
    I don’t see a full turn of color on the base ring. As a matter of fact I see a spot of rust.

    If used, and correct plug. That plug color would be indicative of an alcohol fueled engine, and by color would be burning good. Perhaps NG?
    ChrisJ
  • ChrisJ
    ChrisJ Member Posts: 16,360
    I think @Gordy knew what engine this was from when I mentioned the type. Cheater! :)


    It is used, but certainly wasn't running lean.
    It may be hard to see in the picture but there is absolutely no color on the white insulator.

    This is from a 2004 Briggs and Stratton 18HP Vanguard Vtwin setup from the factory for LPG and Natural gas.

    It's amazing how much cleaner these fuels burn than gasoline, even with a very simple carburetor.

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • SuperJ
    SuperJ Member Posts: 609
    edited December 2018
    Used
    It looks like there is carbon buildup on the underside of the ground electrode. And some higher temp combustion deposits on top.
  • ChrisJ
    ChrisJ Member Posts: 16,360
    > @SuperJ said:
    > It looks like there is carbon buildup on the underside of the ground electrode. And some higher temp combustion deposits on top.

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • Gordy
    Gordy Member Posts: 9,546
    edited December 2018
    New
    Not cheating really. You won’t find a lean burning plug in that good of shape with typical gasoline 4 stroke, or two stroke engines.

    A well tuned alcohol fueled engine using the right plug will burn that clean. Then the light bulb went off.

    It is hard to see in the picture exactly how it’s burning. My first thought was a new old stock off the shelf.
  • Gordy
    Gordy Member Posts: 9,546
    New
    Alcohol fueled
  • Gordy
    Gordy Member Posts: 9,546
    New
    NOX
  • Gordy
    Gordy Member Posts: 9,546
    New
    Gasoline 4 stroke chart.
  • Gordy
    Gordy Member Posts: 9,546
    New
    I’ll be darned if I can find a plug pic burning NG, or LP.

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