Question about 1991 Toyota MR2

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When changing a valve cover gasket, does the cylinder head gasket have to be changed at the same time.

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A valve cover does just that, covers the valves on the cylinder head. Barring an extremely unconventional design on the MR2, the valve cover can be replaced separate of the head gasket.

Posted on Oct 04, 2009

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How to change the valve cover gaskets on a 1985 cutlass


Remove 4 bolts on each valve cover, clean off all of old gasket from cylinder heads and valve covers and replace with new well oiled gaskets. The oil will help the seal.

Nov 16, 2015 | Cars & Trucks

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I have a 95 buick regal 3.8L. I changed the valve cover gaskets and after I was done the car idles rough. I did a vacuum test on it and it indicates that its a worn valve guide. Is it possible that I got a...


Anything could have caused that, it is unfortunate! I have that engine on my Bonnieville, and it is a great one!

Please check any other possible cause first!

You should note that the 3800 engine uses integral valve guides. IE; they are a part of the cylinder head and cannot be replaced. They can be reamed oversize if they are found to be worn past the appropriate limits. Sometimes, the valve guide bore will be oversized as manufactured. This will be marked on the inboard side of the cylinder head on the surface just above the intake manifold.

This could be fixed by reaming and replacing the guide with oversized stems.

If you need more info let us know!

Brian

Aug 03, 2008 | Buick Regal Cars & Trucks

1 Answer

How to change and replace valve cover gaskets in a 2004 Chrysler Sebring Convertible 2.7L DOHC V6


You first have to remove the ignition coils or plug wires and then remove the bolts holding the cover to the cylinder head. Discard old gasket. Clean gasket channel of any oil and install new gasket to cover taking care during assembly not to disturb gasket when placing cover back on cylinder head. The rear gasket is much harder to change as the upper plenum must be removed to access this cover. You should have some knowledge of engines if you are going to atempt this repair on your own

Apr 05, 2015 | Chrysler Cars & Trucks

1 Answer

Need to remove valve cover on 2000 Camry Toyota


For the four cylinder engine:

  1. Remove and label all electrical wiring, connectors and vacuum hoses necessary to gain removal clearance.
  2. Remove the spark plug wires. Disconnect the PCV hose.
  3. Remove the four nuts and grommets located on top of the cylinder head cover.
  1. Remove the cylinder head cover and the cover gasket from the cylinder head.
  2. Discard the gasket and replace with a new one.
To install:
  1. With a wire brush or gasket scraper, remove all the old gasket material from the cylinder head and the cylinder head cover gasket surfaces.
  2. When the cylinder head surfaces are free and clean, apply beads of sealant to the cylinder head in the locations shown in the accompanying illustrations.
  3. Install the new cylinder head gasket in the cover. Make sure that the gasket seats evenly.
  4. Place the cylinder head cover with the gasket onto the cylinder head.
  5. Install the four grommets and nuts. Uniformly tighten the nuts in several passes to 17 ft. lbs. (23 Nm).
  6. Connect the PCV hose. Connect all removed vacuum hoses, connectors and electrical wiring. Connect the negative battery cable.
  7. Start the engine and inspect for oil leaks.
  8. Repair any leaks as necessary.
For the V-6 (3.0L) engine:
  1. Drain and recycle the engine coolant.
  2. Disconnect the radiator inlet hose.
  3. Disconnect the throttle and accelerator cables.
  4. Remove the air cleaner cap assembly.
  5. Remove the V-bank cover. Use a hexagon wrench to loosen the nuts.
  6. Label and remove all emission control valve hoses. Disconnect any wiring interfering with the valve cover removal.
  7. Remove the air intake chamber. This will gain you access to the back valve cover.
  8. Disconnect the engine wire from the left hand side, No. 3 timing belt cover, rear side and right hand side. Most of the wiring is secured by nuts and or bolts to the body of the vehicle.
  9. Remove the ignition coils, make sure the place them in order on a table so not to mix them up.
  10. Remove the 8 bolts retaining the valve covers and gasket.
  11. Clean the mating area of the valve cover and cylinder heads well. If necessary, scrape any left gasket from either surface.
  12. Apply seal packing to the cylinder heads and place new gaskets into position.
  13. Attach the valve covers. Uniformly tighten the bolts in several passes to 69 inch lbs. (8 Nm).
  14. Install the spark plugs in their proper locations, then place the ignition coils into place and secure.
  15. Attach all engine wiring be sure to secure each harness properly.
  16. Install the air intake chamber. Refer to Fuel System .
  17. Attach all emission hoses and wiring.
  18. Attach the V-bank cover.

Apr 15, 2014 | 2000 Toyota Camry

1 Answer

I need head bolt torque specs for a 2000 cadillac deville dts..


DeVille, Eldorado, Seville 1999-2005

Cylinder Head

Print


Removal & Installation

Left Side

  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Drain the cooling system.
  3. Properly relieve the fuel system pressure.
  4. Remove or disconnect the following:

    Negative battery cable Exhaust manifold Alternator Water crossover Intake manifold Valve cover Timing cover Secondary camshaft drive chain Power steering return hose retaining bolt from the cylinder head 3 M6 external drive bolts from the front portion of the cylinder head 10 M11 internal drive cylinder head bolts Cylinder head and gasket.
  5. Clean the head mating surfaces.

To install:

0996b43f80231662.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Left cylinder head bolt torque sequence-4.6L engine

  1. Install the cylinder head with a new gasket. Lubricate the bolts with engine oil prior to installation.
  2. Torque the M11 bolts in sequence as follows:
    1. Step 1: 30 ft. lbs. (40 Nm), plus an additional 70 degrees
    2. Step 2: Turn an additional 60 degrees
    3. Step 3: Turn an additional 60 degrees (total 190 degrees)

  3. Torque the M6 bolts to 106 inch lbs. (12 Nm)
  4. Install or connect the following:

    Power steering return hose retaining bolt to the cylinder head and tighten to 37 ft. lbs. (50 Nm) Secondary camshaft drive chain Timing cover Valve cover Intake manifold Water crossover Exhaust manifold Negative battery cable
  5. Change the oil and filter.
  6. Fill the cooling system.

Right Side
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Drain the cooling system.
  3. Properly relieve the fuel system pressure.
  4. Remove or disconnect the following:

    Negative battery cable Exhaust manifold Water crossover Intake manifold Valve cover Timing cover Secondary camshaft drive chain Electrical connector from the Engine Coolant Temperature (ECT) sensor Nut attaching the coil cassette ground wire to the cylinder head Bolt attaching the exhaust crossover pipe to the cylinder head Bolt attaching the right transaxle mount bracket to the cylinder head Bolt attaching the rear transaxle brace to the transaxle Nuts attaching the rear transaxle brace to the cylinder head Rear transaxle brace 3 M6 external drive bolts from the front portion of the cylinder head 10 M11 internal drive cylinder head bolts Cylinder head and gasket
  5. Clean the head mating surfaces.

To install:

0996b43f80231663.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Right cylinder head bolt torque sequence- 4.6L engine

  1. Install the cylinder head with a new gasket. Lubricate the bolts with engine oil prior to installation.
  2. Torque the M11 bolts in sequence as follows:
    1. Step 1: 30 ft. lbs. (40 Nm), plus an additional 70 degrees.
    2. Step 2: Turn an additional 60 degrees.
    3. Step 3: Turn an additional 60 degrees (total 190 degrees).

  3. Torque the M6 bolts to 106 inch lbs. (12 Nm).
  4. Install or connect the following:

    Rear transaxle brace over the studs located at the rear of the right cylinder head Nuts attaching the rear transaxle brace to the cylinder head, loosely Bolts attaching the rear transaxle braces to the transaxle and tighten to 37 ft. lbs. (50 Nm) Nuts attaching the rear transaxle brace to the cylinder head and tighten 37 ft. lbs. (50 Nm) Electrical connector to the ECT sensor Bolt attaching the exhaust crossover pipe to the cylinder head and tighten to 18 ft. lbs. (25 Nm) Nut attaching the coil cassette ground wire to the cylinder head and tighten to 13 ft. lbs. (17 Nm) Secondary camshaft drive chain Timing cover Valve cover Intake manifold Water crossover Exhaust manifold Negative battery cable
  5. Change the oil and filter.
  6. Fill the cooling system.

Apr 16, 2013 | 2000 Cadillac DeVille DTS

1 Answer

Were to start when changing cylinder head gasket


put in time and remove valve cover, front engine cover, timing belt ,exhaust at manifold, intake manifold and remove head bolts, pull head clean all surfaces replace gasket after head ck for cracks follow specs on bolts and put back together in a shop in would take about 4 to 6 hrs to do .

Jul 15, 2012 | 2002 Daewoo Lanos

2 Answers

I havea daewoo nubira and we replaced the valve cover gasket yesterday , did an oik change and now the engine is smoking white smoke. Try to check to hoses, could not see a leak. Where is the cylinder...


Hello and welcome to FixYa!

The cylinder head is located on the center of the engine. Yes it can be a worn out head gasket or piston rings. If the piston rings are worn out the oil is burnt that's why it emits white smoke. You will need to replace the head gasket and piston rings.

Hope this helps and thank you for using FixYa! Have a good one!

Apr 30, 2011 | 2000 Daewoo Nubira

2 Answers

Valve cover gasket, how to replace?


Rocker Arm (Valve) Cover REMOVAL & INSTALLATION 2.3L 4-Cylinder Engines
  1. Disconnect the negative battery cable.
  2. Label and remove the spark plug wires.
  3. Remove the attaching bolts for the valve cover.
  4. Remove the valve cover from the cylinder head. If necessary, lightly tap the valve cover with a soft hammer to aid in removal. To install:
  5. Thoroughly clean the valve cover and cylinder head gasket mating surfaces.
  6. Install the valve cover on the cylinder head using a new gasket.
  7. Tighten the valve cover bolts to 14 ft. lbs. (20 Nm) in a crisscross pattern.
  8. Install the spark plug wires.
  9. Connect the negative battery cable.
  10. Start the engine and check for leaks. Fig. 1: Valve cover and gasket assembly 90953g12.gif
2.8L 6-Cylinder Engine
  1. Disconnect the negative battery cable.
  2. The following steps are necessary if your car has A/C and if you are removing the passenger side valve cover, if you do not need to remove the passenger side valve cover, skip them.
    1. Remove the A/C compressor belt and the compressor from the mounting bracket located on the passenger side of the engine. Do not remove the lines from the compressor.
    2. Place the compressor with the lines attached on the passenger side front shock tower and secure.
    3. Remove the compressor bracket.
  3. Remove the air cleaner-to-throttle body hose.
  4. Label and remove all necessary electrical and vacuum connections.
  5. Remove the attaching bolts for the valve cover(s).
  6. Remove the valve cover(s) from the cylinder head(s). If necessary, lightly tap the valve cover with a soft hammer to aid in removal. To install:
  7. Thoroughly clean the valve cover(s) and cylinder head gasket mating surfaces.
  8. Install the valve cover(s) on the cylinder head(s) using new gaskets.
  9. Tighten the valve cover bolts to 11 ft. lbs. (15 Nm) in a crisscross pattern.
  10. Install all necessary electrical and vacuum connections.
  11. Install the air cleaner assembly.
  12. Install the A/C bracket (if removed).
  13. Install the A/C compressor and belt (if removed).
  14. Connect the negative battery cable.
  15. Start the engine and check for leaks.
2.3L and 2.4L 5-Cylinder, and 2.9L 6-Cylinder Engines The 2.3L and 2.4L 5-cylinder, and 2.9L 6-cylinder engines have a two-piece cylinder head, the upper half and the lower half. The upper half is basically the same as a valve cover, except that it incorporates the bearing caps for the camshafts into the underside.
  1. Disconnect the negative battery cable.
  2. Remove the spark plug access cover.
  3. Label and remove the ignition coils and vent hoses or the distributor cap and wires if equipped.
  4. Check the cam alignment before removing the cylinder head.
  5. Remove the bolts attaching the upper cylinder head.
  6. Remove the upper cylinder head, lightly tap with a soft hammer if necessary. To install:
  7. Thoroughly clean the upper and lower cylinder head gasket mating surfaces.
  8. Apply liquid sealing compound to the upper cylinder head mating surface. WARNING
    Use a roller or your finger to spread sealant, do not use an excessive amount of sealant, or the oil passages could become clogged.
  9. Place the upper cylinder head onto the lower cylinder head.
  10. Check the cam alignment before tightening the cylinder head.
  11. Install Volvo tool number 5454 or equivalent to the upper cylinder head.
  12. Tighten the nut on the tools to seat the upper cylinder head.
  13. Tighten the upper cylinder head bolts, beginning from the center out to 13 ft. lbs. (17 Nm).
  14. Install the ignition coils and hoses or the distributor cap and wires.
  15. Install the spark plug access cover.
  16. Connect the negative battery cable.
  17. Start the vehicle and check for leaks. Fig. 2: Remove the clamp and detach the vent hose 90953p66.jpg
    Fig. 3: Remove the spark plug cover and the plug wires or ignition coils to access the retaining bolts 90953p80.jpg
    Fig. 4: Remove the retaining bolts 90953p72.jpg
    Fig. 5: A light tap with a soft-faced hammer is usually required to loosen the valve cover 90953p81.jpg
    Fig. 6: Carefully lift the upper cylinder head up and off the lower section. Note the integral camshaft bearing caps in the casting 90953p82.jpg
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Jan 29, 2011 | 1999 Volvo S70

1 Answer

Trying to figure out where my oil leak is on my 1996 camry dx. Had the valve cover gasket changed and still leaking. What's puzzling is a small amount of oil on the back passenger side of the motor just...


Sounds like a slight leak on the cylinder head gasket or timing gear seals. Remove the timing cover plate to give you a better view of the problem. If its something like the heads, then get a professional to do it. If its in the timing section, you can do it yourself with the help of a Hanes or Chiltons manual for your car. Check the oil pan. That one is common on camrys.

Jan 14, 2011 | 1996 Toyota Camry

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