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I have a 2001 Blazer and the oil pressure is low. I've changed the sensor and the gauge and the oil pump what can i do now

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  • cucumber61 Oct 07, 2009

    yes the tube was tight. and yes the strainer was cleaned. it has nearly 140,000 miles and no it's not using oil

  • cucumber61 Oct 07, 2009

    it's a zero now

  • Dar
    Dar May 11, 2010

    Did you clean the strainer when you changed the oil pump, and was the tube good and tight when you installed it? Is the engine using oil? How many miles on it?

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  • Chevrolet Master
  • 3,433 Answers

Worry about the cam brgs. How low is the pressure?

Posted on Oct 07, 2009

  • Ned C Cook
    Ned C Cook Oct 07, 2009

    "O"psi Tap into the dending unit port and confirm if have not done so already.It sounds like you know what your doing so I am assuming that what you are doing is done correctly and accurately.

    The oil pump haas been replaced so the pressure relief valve is not the problem. Is the oil pump drive shaft in place and rotating the pump? It's the shaftt the dristributor is matched up with. It should be because you changed the pump, correct? I've forgotten that puppy once before myself. The thing is, is thaat the oil is routed up to the port next to the distributor and then to the cam brgs.. The cam brgs actually control the oil pressure.. The lifters also have influence but they would clatter like heck if they go no oil. which they are probably doing now, right? Was this engine just assemble? over overhauled? If so, There are three small soft plugs at the end of the the oil galleys behind the cam gear. They are often replace with allen screw plugs after being threaded during a rebuild.. If they have not be modified to threaded plugs then ther is a possibility one or, may 2 of them have blown out. Zero pressure means a direct and unrestricted dump occuring. or the pump is not being driven. There is two things to be concerned with. The rod and mains bearings fail before they wood affect the oil pressure in a manner such *** what we have here. Chk the distributor drive to the pump by pulling the distributor and looking in the hole to verify the rod is there. Hopefully it's not so we can stop there. My phone is 909-630-3192, Call if you need, Ned.

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