Question about 1989 Nissan Sentra 4 Door

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Cylinder head I have a 1989 sentra 1.6 SGLI. Mybe the person who fitted the head was less knolegable. It does not balance well after fitting and the car would just cut-off but when started it gives no problem. We did replace bearings before fitting the head as no.3 piston had oil on top of the pistol. does it need special setting or any one can? Shold I replace the head with a recon one, but it seems hard to find one separated from the block.What else.

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  • Anonymous Oct 31, 2008

    mi auto no le resiste la reversa

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Cylinder head are nissan sentra's no 1 problem. you should've done a pressure test on ur head. if dats okay, replace the bolts as they wear out over the years....torgue as per manufactoring specs...

Posted on Aug 14, 2008

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Can I fit valve stem seals without taking the head off on 1600 sentra 1997


No you can't..
Fitting valve stem seals involves removing the valve springs. This means the valve has to be held in place by a valve spring compressor (bought from almost any spares outlet). The springs are compressed by placing one end of the compressor tool on the valve face and the other end over the spring cap, then squeezing the tool to compress the spring, then removing the split collets that hold the spring in place, removing the spring cap and spring, then eventually you have access to the stem seals.
The head has to be removed to accomplish all this.

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No power to fuel pump for a 89 nissan sentra


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Will 175/70/13 tires fit 1989 plymouth horizon originally equipted with 185/80/13


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I have a 2000 nissan sentra my harmonic balance is bad according to a autozone person it moves when the car is on and he told me it needs to be replaced because it has play i need to replace and find out...


The harmonic balancer is integrated with the crankshaft pulley, and if replaced requires taking the bolt out from the side of the 4 cyl. engine.

I would recommend that an experience engine rebuilder perform the service.

Inspect the Harmonic Balancer:

The harmonic balancer (vibration damper) is inspected for signs of wear in its center bore.
  • Also inspect the rubber mounting for indications of twisting and deterioration.
  • The outer ring can slip, causing an out of balance condition. Replace any harmonic balancer that has slipped.
  • With the cylinder head removed and the piston at top dead center (TDC), make a visual comparison. Do the timing marks for TDC on the timing cover and damper appear to be accurate.
  • Be sure the damper is the correct one for the vehicle. The wrong one can be worse than none at all.
  • Sometimes a damper can become loose on the crank. Check the keyway for wear that can result from improper damper installation, the wrong size key, or a loose damper hub to crank fit.
  • Be sure all pulleys are straight. A damaged pulley can force a crankshaft to bend during engine operation.
This is a general guide on replacing the harmonic balancer, but there are other instructions that the rebuilder would follow to actually do the service for you:

To remove the harmonic balancer, the cylinder head and timing cover must be removed and the piston should be at top dead center (TDC).
  • Install the vibration damper by pounding it on, or use a special installation tool.
  • Generally, the damper is installed unit it bottoms out against the oil slinger and the timing sprocket.
  • If in doubt, install the water pump and pulley, and then pound the damper into place until its pulley aligns with the water pump pulley.
  • It is advisable to use the installation tool, because pounding on the damper can cause stress on the crank thrust bearing surface.
  • It is best to stand the engine block on end and support the crankshaft if the damper must be pounded on.
  • Some vibration dampers are not pressed-fit on the crankshaft.
  • Be sure to install a large washer behind the damper retaining bolt on these engines; otherwise, the damper might fly off, causing damage and a safety hazard.

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PROCEEDURE FOR FITTING CYLINDER HEAD TO QR20DE


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1 Answer

Oil engine oil mix with water


sounds like you have a problem with the head or head gasket.Pulled out the spark plugs and see if you have any showing signs of leakage from head/gasket.

Oct 20, 2008 | 1989 Nissan Sentra 4 Door

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