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Thread: Yellow plugs?

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    Default Yellow plugs?

    I'm running Race Track 87 rec fuel and the motor has been running really good, but my plugs look yellowish tan? I've never seen anything like this before.

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    Quote Originally Posted by Tiller guy View Post
    I'm running Race Track 87 rec fuel and the motor has been running really good, but my plugs look yellowish tan? I've never seen anything like this before.
    What type and brand oil are you using, mineral, synthetic?

    What ratio?

    What engine do we have here?
    " Three may keep a secret if two of them are dead" Ben Franklin
    " ------- well Doctor what have we got a Republic or Monarchy? A Republic he replies if you can keep it"
    Benjamin Franklin, 1787 Constitutional Convention, as recorded by signer James McHenry's in his diary at the Library of Congress

    Location: SW Orlando, Fl

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    Yamaha 30hp 3 cylinder running Pennzoil xlf 50:1. I think the yellow came from a lean condition that was caused by a weak fuel pump? It's running good and now my plugs look more tan. Now I just need to decide on a 100% synthetic oil?

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    Default oil to run

    Quote Originally Posted by Tiller guy View Post
    Yamaha 30hp 3 cylinder running Pennzoil xlf 50:1. I think the yellow came from a lean condition that was caused by a weak fuel pump? It's running good and now my plugs look more tan. Now I just need to decide on a 100% synthetic oil?
    What revs are you turning?
    Does the Yame have chrome bores or regular?
    Nothing wrong with more oil, 50:1 kinda light.
    " Three may keep a secret if two of them are dead" Ben Franklin
    " ------- well Doctor what have we got a Republic or Monarchy? A Republic he replies if you can keep it"
    Benjamin Franklin, 1787 Constitutional Convention, as recorded by signer James McHenry's in his diary at the Library of Congress

    Location: SW Orlando, Fl

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    Quote Originally Posted by zul8tr View Post
    What revs are you turning?
    Does the Yame have chrome bores or regular?
    Nothing wrong with more oil, 50:1 kinda light.
    It's a fishing motor turning under 6000 for now. It was a junk parts motor and I don't trust it until it gets a new powerhead.
    http://s1262.photobucket.com/user/bl.../Yamaha%2030hp

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    Team Member zul8tr's Avatar
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    Quote Originally Posted by Tiller guy View Post
    It's a fishing motor turning under 6000 for now. It was a junk parts motor and I don't trust it until it gets a new powerhead.
    http://s1262.photobucket.com/user/bl.../Yamaha%2030hp
    Lot of nice work put into that engine. The Penn XLF oil is good enough for that engine save money from syn. If you will us it for fishing and trolling the 50:1 OK but for high revs operation most of the time the I would use more oil like 32:1.
    " Three may keep a secret if two of them are dead" Ben Franklin
    " ------- well Doctor what have we got a Republic or Monarchy? A Republic he replies if you can keep it"
    Benjamin Franklin, 1787 Constitutional Convention, as recorded by signer James McHenry's in his diary at the Library of Congress

    Location: SW Orlando, Fl

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