Question about 1995 Buick Riviera

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Oil leak at right end of engine near serpentine belt

Replaced oil filter --problem persists.

No tubes appear to be leaking.

If it's the crankshaft oil seal -- how expensive is it to replace it?

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  • Harry Russell Jan 14, 2009

    Thanks for the idea. The timing cover gasket will be less expensive to replace than the crankshaft seal ($ 200+). Appreciate the thoughtful response.

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  • 146 Answers

It's probably not the crankshaft seal. It's probably the timing cover gasket. It's very common in these engines.

Posted on Jan 14, 2009

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When starting my truck I hear a grinding noise for a short while


Probably one of the items running off the serpentine belt. Two ways to check.

Get a piece of plastic tube, open the hood, put one end in your ear, and get someone to start the vehicle. Put the other end of the tube near each of the pulleys. You should be able to hear the grinding loud near the one causing it.

Or, with the engine cold, remove the serpentine belt (take a picture of its threading), and turn each of the pulleys by hand excepting the crankshaft pulley. You will be able to feel the one that is grinding.

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1995 Camry Oil Pressure Sender location


Yes, is it the 4 or V6? I think it is either the oil pump shaft seal, or the crankshaft nose seal. The second one can be damaged by work in that vicinity such as removal of the crankshaft sprocket.

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Jan 11, 2012 | 1995 Toyota Camry

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When i start my 2005 buick rainer the oil light stays on longer then usual. And yesterday after a 300 mile trip i noticed a skweeky sound under hood and opened and noticed that it was leaking oil somewhere...


Hello: Check the oil pressure sending unit for leaking. That could be the reason for the delay in the light going out and also the leakage. If oil has gotten on the serpentine belt replace it also. The sending unit will be near the oil filter assembly on the lower front of the engine.

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Leaking oil on right side of motor.


The crankshaft oils seals are known to leak after approx 100,000 miles. The Harmonic Balancer (fan belt pulley) end of the engine will have lots of oil and road grit around the oil pan, air conditioning compressor, power steering pump and other area in the engine bay due to wind spread. This seal can be replace without removing the engine. Remove the harmonic balancer bolt and use a pulley puller. If the seal mating surface is grooved replace the balancer too or the new seal will fail soon.

The transmission "bell housing" will weep oil and or trans fluid if the rear crankshaft seal or the transmission seal develops a leak. This seal is much larger than the front seal so it lasts longer and need replacing less often. The transmission will need to be removed from the car to reach these seals.

The oil pan is sealed with silicone engine sealant and will dry out and leak also. Sometimes the leak looks like it is the front or rear seal (pulley or transmission end of engine) but it may be the oil pan leaking and dripping into the pressure plate inspection plate or the pulley. The oil pan can be removed and resealed without removing the engine or transmission but it is a little tricky. Dropping the engine's under brace and exhaust pipe is recommended. Additional engine/transmission support is needed to do that.

While you are under the car look near the oil filter. Above and forward (toward the fan belt is forward) and see if there is oil dripping from the oil pressure sending unit wire. It will leak into the electrical connector. Squeeze it and see if oil seeps out. If so replace the sending unit. It looks kind of like a spark plug screwed into the block.

Near the oil filter you will see the power steering pump mounted to the side of the pulley end of the engine and it is over the right CV drive axle and has several hoses connected. One larger hose is a none pressure hose that gravity feeds the pump from the fluid reservoir mounted above it on the passenger side wheel well in the engine bay. This hose eventually leaks and drips power steering fluid everywhere! It is a molded hose from the dealer parts dept. and relatively easy to replace. Messy but do-able.



Now the top side of the engine. The valve cover has a rubber gasket that shrinks over time in that hot engine bay. Take a Phillips head screw driver is see how loose the screws holding it are. Really loose hu? You can tighten them but you should replace it because it shrunk and that makes the screws loose.

You will need some silicone engine sealant each side of the distributor bridge at the driver's side of the cover. Get a manual to make sure you tighten those screws in the correct order.



Distributor "O"ring seal can leak. Two 12MM bolts to remove it and put a new "O"ring on and you are set. Mark the Distributor's position to the bridge bracket BEFORE you loosen those screws. Line it back up to the marks so you don't mess up the timing and reset the timing after is even better.

Jun 26, 2011 | 1996 Nissan Sentra

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Hoow to set up the timing belt


What do you mean by drive belt. If your talking about the serpentine belt, it should have an auto tensioner. Same goes for the timing belt. There is no adjustment. If the belt is loose then it needs to be replaced.
Replacing timing belt,Sienna 1998:
1.Disconnect battery (-) cable and plastic wiper washer cowl assembly
2.Remove spark plugs and put all wirings,cables out of the way
3.Drain coolant (cold) and remove upper hose
4.remove front right tire and wheel plastic fender apron
5.jack up engine under oil pan with rubber,towel or wood slightly
6.remove right engine support rod and its bracket
7.remove all drive belts.Examine condition;Label if re-using
8.remove plastic upper timing belt cover & gasket
9.remove crankshaft pulley bolt-use the ff. methods: a.air impact wrench or Toyota Special service tool-best b.chain wrench on pulley then breaker bar/socket on bolt-good c.open fly wheel cover,jam screwdriver on gear teeth then unbolt-tough d.breaker bar/socket on bolt, jam bar tip on floor, lower car then "start" engine -smart
10.remove pulley by hand or use carefully 2 prybars then remove plastic lower T.B.coverand gasket
11.reinstall bolt and turn engine clockwise to align timing marks:one on each camshaft sprocket and one on the crankshaft sprocket
12.remove T.B. tensioner spring-2 bolts loosen alternately then keep upright
13.remove crankshaft sprocket guard then the sprocket, then the belt.
14.Examine belt condition for damage and correct cause of damage if any
15.remove idler T.B.pulleys & check for smooth operation/contamination/leak
16.check all oil seals, water pump leaks,etc
17.Check T.B.tensioner spring for oil leak and tension by pressing push rod against hard object-there should be no movement or leak
18.Compress push rod using vise, align rod hole with outer hole then insert small nail, pin or wire to keep it there then reinstall along with other parts removed
19.Install T.B.carefully.No twist, stretch,prying ,oil, moisture, bending
20.Handturn engine 720 deg.clockwise, feel for resistance , and then see timing marks still re-align
21.Reinstall plastic covers and gaskets,drive belts.etc in reverse order 21.


Hope this helps.

Mar 02, 2011 | 1998 Toyota Sienna

1 Answer

WHAT IS CORRECT TIMING MARKS FOR TIMING BELT INSTALLATION. 2000 NUBIRA 2.0 DOHC AND CRNKSHAFT MARKS. Thanks Joe


TIMING BELT
Removal
Disconnect negative battery cable. Disconnect intake air temperature sensor connector from intake air duct. Disconnect the air intake tube from the throttle body. Disconnect the breather tube from the valve cover. Remove resonator from throttle body. Remove air filter housing.
Raise and support the vehicle. Remove right front wheel. Remove right front splash shield from wheelwell. Remove serpentine accessory drive belt.
Remove crankshaft pulley bolts. It is NOT necessary to remove crankshaft sprocket center bolt. Remove crankshaft pulley. Lower vehicle.
Support engine assembly from above with Support Fixture (J-28467-B). Remove engine mount bracket from timing belt end of engine.Remove power steering hose clamp bolt, and position hose away from timing belt cover. Remove front timing belt cover. Using crankshaft center bolt, rotate crankshaft one full turn clockwise (as viewed from timing belt end of engine).
Align mark on crankshaft sprocket with notch at bottom of rear timing belt cover. See Fig. 4 . Align camshaft sprocket timing marks with notches on valve cover. See Fig. 5 .
CAUTION: Engine damage could result if camshaft sprockets are not properly aligned with notches on valve cover.
Loosen the automatic tensioner bolt. Use an Allen wrench to rotate tensioner and relieve tension on timing belt. Remove timing belt.
Fig. 4: Aligning Crankshaft Sprocket Timing Mark
Courtesy of DAEWOO MOTOR AMERICA, INC.
266999_tim_4.jpg
Fig. 5: Aligning Camshaft Sprocket Timing Marks
Courtesy of DAEWOO MOTOR AMERICA, INC.
266999_tim2_3.jpg
Installation
Ensure crankshaft and camshaft timing marks are still aligned. Install the timing belt. See Fig. 7 . Turn the timing belt tensioner counterclockwise to tension the timing belt. Turn tensioner until the pointer aligns with the notch on the rear timing belt cover. Tighten automatic tensioner bolt to specification. See TORQUE SPECIFICATIONS .
Using crankshaft center bolt, turn crankshaft clockwise (as viewed from timing belt end of engine) 2 full revolutions. Ensure timing belt tensioner pointer is still aligned with notch.
If timing belt tensioner is correctly aligned, install timing belt cover. See Fig. 3 . Install the engine mount bracket on the timing belt end of engine. Position power steering hose in place, and install clamp bolt. Install crankshaft pulley. Install serpentine accessory drive belt.
Install right front splash shield. Install right front wheel. Install air filter housing and resonator. Connect air intake temperature sensor connector. Connect negative battery cable.
Fig. 7: Identifying Timing Belt Routing
Courtesy of DAEWOO MOTOR AMERICA, INC.
266999_tim3_1.jpg
here

http://www.2carpros.com/questions/daewoo-leganza-2000-daewoo-leganza-timing-marks

Feb 17, 2011 | 2000 Daewoo Nubira

1 Answer

Leaking oil left side of motor


Since it's not clear whether you mean driver side or passenger side, I will address both.

On the driver side, the most common leak is from the distributor. This can be caused by the distributor shaft exterior o-ring, or it can be caused by the distributor shaft interior bearing seal. To determine which it is, remove the distributor. First detach the spark plug wires, then undo the bolt that holds the distributor to the head, then pull the distributor out of the head. You will see the o-ring on the exterior of the distributor shaft. This is a $0.50 part, so just replace it with a new one as long as you have the distributor out. The bearing seal is on the inside of the distributor. To inspect it, undo the three bolts holding the cap to the distributor body. Pop the rotor off the shaft, the unclip the inside plastic cover. If you see any oil inside the distributor or the distributor cap, this means the seal is leaking and must be replaced. You can get a seal and bearing replacement kit from kbox.ca. Or, you can just buy a new distributor. Note: To get the distributor back in place you must align the shaft correctly with the notch in the camshaft. There is a right way and a wrong way. If the shaft seems to be aligned but does not go in, pull it out and rotate it 180 degrees, then put it back in.

The other possibility on the driver side of the engine is the main seal between the engine and transmission. If this is the case, you would have to either drop the transmission or pull the engine to replace it.

What if the oil is leaking on the passenger side? If it's coming from behind the timing belt cover, there is a camshaft seal and a crankshaft seal, both of which can leak oil. To get to them, you will have to remove all accessory belts and the alternator, remove the exterior crankshaft pulley, remove the engine mount (support the engine) and the timing belt covers, remove the timing belt, then the crankshaft pulley and/or camshaft pulley, whichever is necessary to replace the leaking seal(s).

Where else could oil be leaking from? If it's coming out from near the top of the engine, that's the valve cover gasket. Remove the valve cover and replace the gasket. While you're at it, replace the spark plug tube seals.

If it's coming out from near the bottom of the engine, it could be the oil pan gasket. Remove the oil pan and replace the gasket.

One more possibility for oil leakage: The head gasket. But in this case you would have noticed other symptoms besides just an oil leak.

Good luck! Let us know how it turns out.

Mar 21, 2010 | 1993 Toyota Corolla

1 Answer

My toyota vienta 3VZ-FE 1996 - oil leak onto exhaust


Hi,

That engine will leak oil from

- cam cover gaskets (rear one drips on the exhaust)
- camshaft end seals
- distributor shaft o-ring (appears on top of transaxle housing)
- oil filter bracket to block o-ring seal (drips on front bank exhaust)
- crankshaft nose oil seal (have done with timing belt change)
- rear main seal (expensive, leave it be)

Dec 06, 2009 | 1996 Toyota Camry

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