Question about 2005 Nissan Xterra

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2006 nizzan eterra oil pressure good at start up then goes away? replaced back timing cover didn't fix any ideas

Nizzan replaced oil pump the chain and guids

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  • jade holleman
    jade holleman Mar 26, 2014

    when oil pressure drops we cut car off strat right back up oil pressure goes to halfway for a minute and then d

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  • Nissan Master
  • 75,235 Answers

Have you replaced the oil pressure sending unit yet?

Posted on Mar 26, 2014

Testimonial: "the vehical looses oil pressure not because of sending unit; no bearing noise! regains oil pressure on start up then goes away after a minute."

  • 1 more comment 
  • yadayada
    yadayada Mar 26, 2014

    The sending uni may be defective and that is the issue here. Have you had the oil pressure checked with the mechanical test gauge?

  • jade holleman
    jade holleman Mar 26, 2014

    yes,it falls off after a minute and you can cut car off and start it back up and oil pressure will do the same thing

  • yadayada
    yadayada Mar 26, 2014

    You never said that, and still you rate me poorly. You have a pressure problem and that will burn out the bearings in the near future.

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SOURCE: How can I fix my 2006 frontier oil gauge

This is caused by a worn oil pressure sending unit. Have that replaced and you should be set. In rare cases the gauge fails, but this is extremely rare.

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SOURCE: Oil not circulating ? 1999 Nissan Altima DOHC,

Well, from the oil pump it goes into your oil filter so the lines going from the pump into the filter could be clogged. check that and see. Also on most imports I have found that they have to be primed after the oil pump has been replaced. Buy a oil pressure gauge and hook it up. Disconnect your fuel and spark delivery and then just crank over your motor to make sure you have good pressure. It takes up to 30 seconds to build on some cars. hope that helps.

Posted on Jul 21, 2009

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SOURCE: i have an oil leak from my front timing chain

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SOURCE: 2006 Xterra. Low oil pressure gauge at idle to

inner timing cover oil gallery gaskets are more than likely your problem...you can make your own for 10 dollars or give nissan 500 for a new cover as they dont supply the gaskets....check the oil pan for gasket material...thats a sure sign they blew out but they may be gone and still holding together so its not always accurate...

Posted on Mar 21, 2011

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I have a 91 22re 4wd 5spd when it first starts it makes a loud clacking noise that goes away after a few seconds what is that noise my rocker arm shafts and rocker arms are in good condidion


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Oil not circulating ? 1999 Nissan Altima DOHC, KA24DE, 200315 miles The right side guide rail to the lower timing chain shattered and jammed the oil pump. I have replaced the oil pump and both timing chain...


Well, from the oil pump it goes into your oil filter so the lines going from the pump into the filter could be clogged. check that and see. Also on most imports I have found that they have to be primed after the oil pump has been replaced. Buy a oil pressure gauge and hook it up. Disconnect your fuel and spark delivery and then just crank over your motor to make sure you have good pressure. It takes up to 30 seconds to build on some cars. hope that helps.

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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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1 Answer

Timing chain


I'll assume you are going to replace the entire set (sprockets, guides, etc.) which I got from O'Reilly for $79.

First, set engine to #1 TDC.
Remove valve cover, fan shroud, fan, drive belt, water pump, 4 10mm bolts from bottom front of head, and 3 10mm bolts from front of oil pan. Remove lower front shield to remove oil pump. remove oil pump/distributor drive shaft, noting the orientation of the drive shaft.
Remove harmonic balance using correct puller (can be rented from local auto parts store). Remove P/S pump and A/C compressor if necessary. Remove timing cover.

IMPORTANT: Before removing oil thrower and distributor drive gear, note direction of oil thrower.
Remove oil thrower and distributor drive gear.
Remove chain guides, tensioner, chain, and finally both sprockets.
The new crank sprocket can only be installed one way, by aligning groove with keyway. The new cam sprocket will have 3 guide holes on the mounting flange, and you will need to align the knock pin with hole #2. Both sprockets should have a small dot (timing mark) on the right side of the sprocket when viewed from the front.
To install new chain, inspect chain to find the two brightly colored gold links. These two links must align with the timing marks on the sprockets. Assemble and install chain tensioner.

!!! IMPORTANT: Be sure to use new gasket when installing tensioner. Tensioner is oil pressure fed and a leaking gasket could allow chain slack, leading to premature wear or break.
Install chain guides, being sure not to let tensioner pop out.

!!! IMPORTANT: The tensioner must be fully compressed. To accomplish this, loosen the 8mm bolts in the passenger side guide (the shorter one). Compress the tensioner, adjust guide to remove slack, and tighten the two 8mm bolts.
Double check that everything is still lined up properly, and make corrections as necessary.
Install distributor drive gear and oil thrower.

!!! IMPORTANT: Ensure oil thrower is installed facing away from the distributor gear. If not, it could get caught in the distributor gear and destroy the two gears or cause engine lockup.

Before installing timing cover, inspect coolant and oil passages. If there is excessive buildup, a good system cleaner is recommended. Replace timing cover gaskets to prevent oil leakage. The best way to reinstall the timing cover is to remove the oil pan, install the timing cover, and reinstall the oil pan (replacing the pan gasket). If you don't want to do that, simply grease the top and bottom of the timing cover and lightly tap it into place with a rubber mallet. This is to prevent damage to the oil pan and head gaskets.
To install the distributor drive shaft, dab some grease on the top side of the gear to hold it in place, and line it up with the distributor. If you are having trouble lining up the shaft, pull it out and look at it from the top, and you will see that the flange is offset. At #1 TDC, the offset will be towards the front.
Install oil pump, being sure to use new gasket.

!!! IMPORTANT: Failure to replace oil pump gasket could lead to inadequate oil pressure, which will cause severe engine damage.

The remainder of the installation is a reverse of removal, using new gaskets where necessary. Before installing your valve cover is a good time to check your rocker arm clearances. This is also a good time to replace your drivebelt, and any other maintenance items as necessary.

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