Question about 1999 Daewoo Nubira

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Can oil pressure relief valve be replaced without removing pump?

1.6 engine: can oil pressure relief valve be replaced without removing oil pump? Air con and powersteering pump bracket appears to be in the way. If so, will pump still prime OK after replacing valve. Book says to pack pump with petroleum jelly. Has anyone had oil leaks caused by faulty valve making pressure too high? We had an oil leak between head and block near gallery. Have removed head, and are wondering if we should replace the pressure relief valve. Any ideas welcome.

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Posted on Jan 02, 2017

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SOURCE: Oil leaks between head and block. Removed head. Can't find cause.

where is oil pressure switch/sensor on 2001 nubira

Posted on Feb 20, 2011

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SOURCE: If the oil pan is

Not necessary to be primed with petroleum jelly. The oil pump will be primed itself only with engine oil after few turns of the crankshaft, when cranking the engine by the starter motor, then when engine idling. You should check out the engine oil level by the oil dipstick. Fill up with oil allways below the "Maximum" level. Never exceed the oil "Maximum" level on the dipstick!

Posted on May 11, 2011

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What does a oil pressure relief valve do


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If you subjected the bearings to double the pressure, you could achieve bearing failure, as you could with not enough pressure.
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Oil presure guage jumps from 30 to 60 whats the normal operating range


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Oil light is onin my 1999 daewoonubira i have topped up with oil and is still on now engine is making a noise


possible oil pump/pressure relief valve issue or pick up.
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then recheck with oil pressure test gauge fitted to where oil pressure switch is to see what pressure pump puts out if any.

Aug 02, 2009 | 1999 Daewoo Nubira

1 Answer

Oil pump replacement


This MAY seem Strange But It IS ALL necessary for Oil Pump Replacement. And Please Don't Forget to Rate Me as Most Folks Do Not. Thank You and GOOD LUCK with the Oil Pump Job Also


OIL PUMP
It is necessary to remove the oil pan, oil pickup and chain case cover to service the oil pump rotors. The oil pump pressure relief valve can be serviced by removing the oil pan and oil pickup tube. Refer to Timing Chain Cover Removal and Installation for procedures.

DISASSEMBLY
  1. To remove the relief valve, proceed as follows:
  2. Drill a 3.175 mm (1/8 inch) hole into the relief valve retainer cap and insert a self-threading sheet metal screw into cap.
  1. Clamp screw into a vise and while supporting chain case cover, remove cap by tapping chain case cover using a soft hammer. Discard retainer cap and remove spring and relief valve.
  2. Remove oil pump cover screws, and lift off cover.
  3. Remove pump rotors.
  1. Wash all parts in a suitable solvent and inspect carefully for damage or wear.
Oil Pump Assembly
  1. Assemble pump, using new parts as required. Install the inner rotor with chamfer facing the cast iron oil pump cover.
  2. Tighten cover screws to 12 Nm (105 inch lbs.).
  3. Prime oil pump before installation by filling rotor cavity with engine oil.
  4. Install chain case cover. Refer to Timing Chain Cover Installation.
REMOVAL of Timing cover
REMOVAL
  1. Disconnect negative cable from battery.
  2. Remove timing chain cover.
REMOVAL Of Oil Pan to gain Access to OIL PUMP
  1. Disconnect negative cable from battery and remove engine oil dipstick.
  2. Raise vehicle on hoist and drain engine oil.
  3. Remove bending brace to transaxle attaching bolt.
  4. Remove bolts attaching dust cover to transaxle housing. Lower dust cover to gain access to oil pan bolts.
  5. Remove oil pan screws and remove oil pan.
INSTALLATION
  1. Clean surfaces and apply a 1/8 inch bead of Mopar (R) Silicone Rubber Adhesive Sealant or equivalent, at the parting line of the chain case cover and the rear seal retainer.
    1. Use a new pan gasket.
    2. Install pan and tighten screws to 12 Nm (105 inch lbs.).
    3. Install dust shield and bending brace to transaxle housing.
    4. Lower vehicle and install oil dipstick.
    5. Connect negative cable to battery.
    6. Fill crankcase with oil to proper level.

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