Question about 1986 Volvo 740

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Leaking oil from oil cap

I started leaking oil from the oil cap and I replaced the oil cap but it is still leaking oil from the cap. It is not sealing properly even with the new cap and I need to know if there is a gasket that goes on the head between the engine and the oil cap seal?

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  • Lavenderpain Oct 08, 2008

    I went by the volvo dealership today and they said there is an oil pressure regulator on that model car and if it isn't working or the hoses are clogged then it will leak from the oil cap.

  • Anonymous Mar 30, 2014

    I had new heads put on and that cpv thing but it almost dies when you take the oil cap off I think its burning my oil cause its always low

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The problem is there is to much crank case pressure, make sure the PCV ( positive crankcase ventalation) valve is working correctly.

Posted on Oct 07, 2008

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Here is the oil leaking Problem Identifying Technique

Engine oil leaks from the valve cover gasket are common.

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    http://www.ipdusa.com/products/5884/115315-ipd-hd-viton-oil-cap-seal

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