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I think I'm screwed!

This is a discussion on I think I'm screwed! within the General Help forums, part of the LSx Technical Help Section category; My 98 formula is burning oil like crazy. I've change the PCV valve and it did nothing. There was a ...

  1. #1
    Member 10erg01's Avatar
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    1998 Firebird Formula

    I think I'm screwed!

    My 98 formula is burning oil like crazy. I've change the PCV valve and it did nothing. There was a lot of oil in it when I replaced it. I'm thinking that it's is either the head gasket or piston rings. But what do you guys think also how much would repairs be (a general estimate) for each and it also has 150k on it. Thanks for the help.

  2. #2
    its short but its skinny. jiveass's Avatar
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    pewter
    99 trans am

    so its smokin? if so is it constant? or just when you first start it? Probably cheaper to buy a crate engine....(around $2600) ....rebuilding a ls1 can be costly....and if youre gonna spend that kinda money, might as well upgrade to ls6 which can be had for around $3600.....

  3. #3
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Are you sure it's oil and not coolant??

    Oil burns with blue smoke..

    Coolant burns with white (sometimes thick) fog like smoke..
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    Member 10erg01's Avatar
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    1998 Firebird Formula

    Quote Originally Posted by Smittro View Post
    Are you sure it's oil and not coolant??

    Oil burns with blue smoke..

    Coolant burns with white (sometimes thick) fog like smoke..
    Actually I've ne'er seen smoke but there is a milk like substance when I look in the oil cap. Also I know there is no leak cause I've looked all over for one.

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    its short but its skinny. jiveass's Avatar
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    pewter
    99 trans am

    Quote Originally Posted by 10erg01 View Post
    Actually I've ne'er seen smoke but there is a milk like substance when I look in the oil cap. Also I know there is no leak cause I've looked all over for one.
    look at the dipstick and see if it looks milky

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    Member 10erg01's Avatar
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    1998 Firebird Formula

    Quote Originally Posted by jiveass View Post
    look at the dipstick and see if it looks milky
    Not milky but does have condensation on it and some rust spots.

  7. #7
    Spaz is My Mentor SMWS6TA's Avatar
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    98 T/A w/a little mods...

    Have you check your coolant lately? Make sure it doesn't have oil in it.

    When you say your burning oil like crazy how much? LS1s do consume oil.

    These are a possibility for the oil leaks:

    When you changed the pcv did you just changed it or the entire hose? Also you have a 98 how is your oil pressure reading? is the gauge working all of the time?

    PCV- the hose splits in the back of the intake one goes to the passenger vale cover the other the drivers valve cover and then on to the pcv. It does leak at that Y split.

    OPSU (oil pressure sending unit) - this PITA is also located behind the intake on the drivers side. It is very fragil and gets brittle over the life time of heat cycles. If you done any intake work or have moved the hose that comes off the break booster it can easily break the OPSU. Check there for a leak




    What mods do you have/any recent work? I wouldn't think piston rings are an issue unless you run NO2 on stock pistons and rings. And even then you need to be using it alot.



    Now base on what your OP (and assuming no NO2) I think your head gasket is going.

    If you can, do a compression test on the cylinders. It will help you narrow down which one is having the leak.

    It might not be as bad as you think. You can do the work if you got the tools and time. That can save you alot of $$$
    Last edited by SMWS6TA; 03-21-2011 at 08:53 AM.

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