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Thread: Using Petroleum Jelly - Fuel Pump & Grommet Placement

  1. #1
    Mitsu booster
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    Question Using Petroleum Jelly - Fuel Pump & Grommet Placement

    Hey Everybody!! --- (Hi Doctor Nick!)

    Anyways... I've been having issues with getting fuel pump to mount inside of the hanger cup correctly.

    With the fuel pump pushed through the rubber bushing mount thingy, I cannot get it to sit flush like its supposed to. Managed to mangle up my hands and slicing some fingers open but no such luck.

    Since it IS the gas tank and the fuel supply to the motor, its pretty obvious you wouldn't want to introduce any unwanted chemicals into the fuel system.

    I asked two of my mechanic buddies who both agreed that petroleum jelly would be an okay lubricant to use to help in seating the fuel pump to the cup. I had to clear some cob webs out of my brain but if my chemistry knowledge is correct, wouldn't the petroleum jelly break down over time?

    I understand that if left exposed in air the jelly will coagulate, but even if it turns all nasty and stuff, wouldnt it break down anyways?

    What do you think? Good idea or bad idea?

    All knowledge and thoughts are appreciated!!
    -Daytuna

  2. #2
    Supporting Member II Turbo Mopar Contributor ajakeski's Avatar
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    Re: Using Petroleum Jelly - Fuel Pump & Grommet Placement

    Unless you use the whole jar, it shouldn't ne an issue. I use WD-40.
    Last edited by ajakeski; 09-11-2017 at 06:30 PM.

  3. #3
    boostaholic Turbo Mopar Contributor
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    Re: Using Petroleum Jelly - Fuel Pump & Grommet Placement

    I've used petroleum jelly. I've also used a dab of wheel bearing grease. Like ajakeski said, as long as you don't go crazy with it. It's all petroleum based, so it will disolve in gasoline.

  4. #4
    turbo addict
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    Re: Using Petroleum Jelly - Fuel Pump & Grommet Placement

    I use silicone spray for rubber related stuff.

  5. #5
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: Using Petroleum Jelly - Fuel Pump & Grommet Placement

    Quote Originally Posted by tryingbe View Post
    I use silicone spray for rubber related stuff.
    would you be concerned with it fouling an o2 sensor if it goes through the fuel system?

    ive always heard that silicone was bad for them.

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  6. #6
    turbo addict
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    Re: Using Petroleum Jelly - Fuel Pump & Grommet Placement

    I like transmission assembly gel, which is basically petroleum jelly.

  7. #7
    Mitsu booster
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    Re: Using Petroleum Jelly - Fuel Pump & Grommet Placement

    The lube worked out great, thanks for the help guys!


  8. #8
    The moderately moderate moderator Turbo Mopar Staff
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    Re: Using Petroleum Jelly - Fuel Pump & Grommet Placement

    Quote Originally Posted by Aries_Turbo View Post
    would you be concerned with it fouling an o2 sensor if it goes through the fuel system?

    ive always heard that silicone was bad for them.

    Brian
    The little bit of silicone used wouldn't hurt an O2 sensor. Now if he took a handful and threw it in the tank, yes.
    Bryan
    86 GLHS #161, 2016 Impala
    SDAC National Member, SDAC Buckeye Chapter Member

    A man has got to know his limitations.....

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