Thread: big oil leak on front cover side of engine

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  1. #1 big oil leak on front cover side of engine 
    GTX Level Member TEK310's Avatar
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    before i tore the top end of my engine down, i had a large oil leak that i thought was from the LIM. well engine is back together and it is still there. i had replaced the tore up oil filter housing gasket, still leaks.

    i lose about half a quart after about 60miles of driving daily.

    its on the passenger side of engine.

    where could the leak be, that leaks half a quart a day
    2012 Competition Orange Boss 302 #1769 438rwhp 391rwtq
    intake - off road h pipe - e85 - tune
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  2. #2 Re: big oil leak on front cover side of engine 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    valve covers???

    Oil pressure switch?

    Get under there and look.

    SMGPFC Member #1
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  3. #3 Re: big oil leak on front cover side of engine 
    Killa Bee Scottydoggs's Avatar
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    start your car turn the wheels all the way to the left, get a flash light, and look behind the pass side tire at the oil filter, (leave the car running) just past it is the oil pressure sensor. if its leaking, it leaks right where the plug, plugs into it.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  4. #4 Re: big oil leak on front cover side of engine 
    GTX Level Member TEK310's Avatar
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    timing cover main seal. changed, no more oil leak!

    it was not seated properly and the mating surface was all scratched up, with burrs sticking up.
    2012 Competition Orange Boss 302 #1769 438rwhp 391rwtq
    intake - off road h pipe - e85 - tune
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  5. #5 Re: big oil leak on front cover side of engine 
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    How were you able to confirm it was that leaking? I have a leak, bottom of oil pan is covered so that every pan bolt has drips of oil but no obvious source. It does not look obvious that either front or rear valve covers gaskets are doing it. If kind of seems to be coming from the front of engine it seems but trying to see anything in detail is hard from under or looking down from top.
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  6. #6 Re: big oil leak on front cover side of engine 
    Killa Bee Scottydoggs's Avatar
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    you need to de=grease your engine, top and bottom, and the trans, then watch it over the next few days, by getting under it and looking for a trail of oil.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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