Question about 1996 Oldsmobile Cutlass Supreme Coupe

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I have a 1996 Olds Cutlass and it lost all power. I pilled the valve covers off and 4 of the rocker arms arn't moving when the car is running. Does this mean the cam shaft is broken?

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  • Oldsmobile Master
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Sounds like it to me ,would need my dirty oily fingers on it to be sure though ask a local mechanic to have a look and confirm though

Posted on Oct 14, 2010

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Rocker arm pivot torque for olds cutlass 1987 307


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AutoZoneGM Cutlass RWD 1970-1987 Repair Guide ... To remove the rocker arms from the shaft, the nylon arm retainers must be removed. ... 7: Engine valve system, 260, 307, 350, 403 Oldsmobile built engines ... Unfasten the two bolts that attach the rocker arm pivot to the cylinder head. ... Torque the retaining bolts to 25 ft. lbs.

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It could be that the valve clearances need doing, if that doesn't fix it then put a oil pressure guage on it and check the pressure,

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Is 93 olds cutlless 3.8 interference or noninterence


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1 Answer

P 2647"A" Rocker Arm Actuator


Your going to need a air pressure regulator or better yet if the ECM found fault price it and replace it
  1. Start the engine, and let it run for 5 minutes, then turn the ignition switch to LOCK (0).
  2. Remove the cylinder head cover.
  3. Set the No. 1 piston at top dead center (TDC).
  4. Move the intake secondary rocker arm A for the No. 1 cylinder. The secondary rocker arm A should move independently of the secondary rocker arm B.
    1. If the intake secondary rocker arm A moves freely, go to step 5.
    2. If the intake secondary rocker arm A does not move, remove the secondary rocker arms as an assembly, then check that the pistons in the secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the secondary rocker arms as an assembly, then retest.
    3. Repeat step 4 on the remaining intake secondary rocker arms with each piston at TDC. When all the secondary rocker arms pass the test, go to step 6.
    4. Check that the air pressure on the shop air compressor gauge indicates over 400 kPa (4.0 kgf/cm2, 57 psi).
    5. Inspect the valve clearance.
    6. Install a 10 x 1.0 mm adapter to the inspection hole, then connect the air pressure regulator
  5. With the specified air pressure applied, move the intake secondary rocker arm A for the No. 1 cylinder. The secondary rocker arm A and secondary rocker arm B should move together. If the intake secondary rocker arm A does not move, remove the secondary rocker arms as an assembly, and check that the pistons in the secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the secondary rocker arms as an assembly, then retest.
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the valve cover gasket has inner gasket some times called spark plug tube seal. so replace valve cover gasket will fix it

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1 Answer

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probably a rocker arm out of ajustment or a collapsed or failed lifter. would have the valve covers pulled and the rocker arms felt of

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sounds like your lifter are damaged if your rocker are loose you may need to replace cam and lifters

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First off, do not overtighten the rocker. You will not make it any tighter and you run the risk of damaging that stud or the rocker. Compare the valve stem height to the other valve stems of the same valve type (exhaust or intake). If it's lower, you may have a broken spring or a stuck valve. Check the push rod against the other push rods, again from the same valve type. If it's lower, and your push rod is OK as you say, you may have a damaged lifter.

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