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How tight should i tighten the nuts on each lifter on my 1994 4.3 liter engine

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  • Mike Butler
    Mike Butler May 11, 2010

    Are you starting from a recent cylinder head job, or is engine already running, just some noisy lifters that need adjusting?

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For hydrolic lifters turn engine over until both valves on the cyl. your doing are completly closed, if rocker is tight after you do this loosen it until you can wiggle it and then tighten it down until you just can't wiggle it, and then give it another 1/2 to 3/4 of a turn more and thats it, repete this process on the rest of the cyl. and valves and you got it if you still have lifter or rocker noise after you do this find witch one it is and tighten it a little more . If it happens to be solid lifters you will need a feeler guage in thousands and know the setting for each valve, and its the same process except you use the guage between the rocker and top of valve to set the lash.

Posted on Apr 13, 2009

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Ok so ik I'm posting allot haha but does anyone know where or how to adjust lifters just found out mine r just now needed adjustment in near mount Vernon WA or a price at least haha


In engines with rocker arm valve systems, the procedure I'm familiar with is to remove a rocker arm cover, and (one at a time!) while the engine is running, slowly back off the rocker arm retainer nut or bolt just until you hear the lifter tapping, then tighten it a quarter turn. If you can identify a lifter that is already tapping, tighten its rocker arm slowly until it stops tapping, then adjust it. Do not over-tighten! This can damage the engine.

Listen carefully to how the engine sounds; if it starts to stumble when you tighten a loose rocker arm, you've gone too far. If you cannot get the engine to run well without tapping, you may have too much wear in the valve train and may be due for a head overhaul, or you don't have adequate oil pressure in the lifters in question.
Repeat until all rocker arms are done. Replace the rocker arm cover using a new gasket, then (in a V-engine), repeat the procedure on the other side of the engine.

Wearing safety goggles, or better yet, a transparent face shield, is strongly recommended. Sometimes oil will squirt out a considerable distance from the lifter side of the rocker arm during adjustment, and the direction is not readily predictable.

Apr 03, 2015 | Cars & Trucks

1 Answer

Need to know how to adjust valve lash on a big block 454 with roller rocker arms and hydralic roller lifters ? A video whould really help


The old fashioned way was to connect everything up and tighten the nut on the lifters until you could no longer turn the pushrod and then add about a quarter turn. Cover the lifters with a rag then start the engine with the valve cover off and loosen one lifter at a time until you hear it clicking and then tighten just until the clicking stops. Do that on all lifters ona at a time. Whe complete go back and add one quarter turn to each lifter.

Sep 12, 2013 | Cars & Trucks

1 Answer

How to remove belts from 1994 dodge caravan 2.5 liter


Drive Belts

Print


INSPECTION

See Figures 1, 2, 3, 4 and 5
Check the condition and tension of all drive belts every 12,000 miles, or at least once a year. Loose drive belts can lead to poor engine cooling and diminished alternator, power steering pump, air conditioning compressor, or emission air pump output. A belt that is too tight places a strain on the bearings in the driven component.


0900c15280215ae4.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: There are typically 3 types of accessory drive belts found on vehicles today


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Fig. Fig. 2: An example of a healthy drive belt


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Fig. Fig. 3: Deep cracks in this belt will cause flex, building up heat that will eventually lead to belt failure


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Fig. Fig. 4: The cover of this belt is worn, exposing the critical reinforcing cords to excessive wear


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Fig. Fig. 5: Installing too wide a belt can result in serious belt wear and/or breakage
Replace any drive belt that is glazed, worn, cracked, or stretched to the point where correct adjustment tension is impossible. If two belts are used to drive a component, always replace both belts when replacement is necessary. After installing a new belt, run the engine for ten minutes, shut OFF the engine and recheck the belt tension. Readjust if necessary.


ADJUSTMENT

See Figures 6, 7, 8, 9 and 10


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Fig. Fig. 6: Engine belt tension chart-2.2L engines


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Fig. Fig. 7: Engine belt tension chart-1987-89 2.5L engines


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Fig. Fig. 8: Engine belt tension chart-2.6L engines


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Fig. Fig. 9: Engine belt tension chart-1990-93 models


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Fig. Fig. 10: Engine belt tension chart-1994-95 models
Two popular methods of checking drive belt adjustment are; the Belt Tension Gauge Method and the Belt Deflection Method. The former requires a special gauge and the latter requires a straight edge and scale or just a good eye for measurement. The deflection method will be used in the following belt replacement instructions. A rule of thumb for checking belt tension by the deflection method is to determine the midpoint between two pulleys of the drive belt and press down at that point with moderate thumb pressure. The belt should deflect to the measurement indicated in the following installation procedures. Adjustment is necessary if the belt is either too loose or too tight.

WARNING A belt adjustment which is either too loose or too tight will eventually damage the accessory that belt is driving. A too loose adjustment allows free-play in the belt which could transfer a whipping motion or shock to the accessory drive pulley. Similarly, a belt which is too tight will preload the accessory bearings, leading to early failure.


REMOVAL & INSTALLATION

See Figure 11
Raise the front of the vehicle, support on jackstands and remove the lower splash shield if access is hampered due to space limitations when changing drive belts.


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Fig. Fig. 11: Support the vehicle, then remove the lower right side splash shield for access to the drive belts
2.2L Engines
A/C COMPRESSOR DRIVE BELT
See Figures 12, 13 and 14


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Fig. Fig. 12: A/C compressor drive belt adjusting points-2.2L engines


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Fig. Fig. 13: Loosening the locking screws for A/C compressor drive belt removal


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Fig. Fig. 14: Removing the A/C compressor drive belt from under the vehicle

  1. Loosen the idler pulley bracket pivot screw and the locking screw.
  2. Remove the belt and install a replacement.
  3. Using a breaker bar and socket apply torque to the welded nut provided on the mounted bracket to obtain proper tension.
  4. Tighten the locking screw first, followed by pivot screw. Tighten to 40 ft. lbs. (55 Nm).

ALTERNATOR DRIVE BELT (CHRYSLER TYPE)
See Figures 15 and 16


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Fig. Fig. 15: Alternator belt adjustment-2.2L engine


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Fig. Fig. 16: Loosening the locking screw for alternator drive belt removal
If removal of the alternator belt is required, the A/C belt must first be removed.

  1. Loosen the pivot nut, locking screw, and the adjusting screw.
  2. Remove the belt and install a replacement.
  3. Adjust to specification by tightening the adjusting screw.
  4. Tighten the locking screw to 25 ft. lbs. (34 Nm).
  5. Tighten the pivot nut to 30 ft. lbs. (41 Nm).

ALTERNATOR DRIVE BELT (BOSCH TYPE)
If removal of the alternator belt is required, the A/C belt must first be removed.
  1. Loosen the pivot nut, locking nut, and adjusting screw.
  2. Remove the belt and install a replacement.
  3. Adjust to specification by tightening the adjusting screw.
  4. Tighten the locking nut to 25 ft. lbs. (34 Nm).
  5. Tighten the pivot nut to 30 ft. lbs. (41 Nm).

POWER STEERING BELT
If removal of the power steering belt is required, the A/C and alternator belts must first be removed.
  1. Loosen the locking screw, and pivot screw.
  2. Remove the belt and install a replacement.
  3. Install a 1 / 2 in. breaker bar into the pump bracket slot, apply pressure with the breaker bar and adjust the belt to specification.
  4. Tighten the locking screw first, then the pivot screw. Tighten to 40 ft. lbs. (55 Nm).

AIR PUMP DRIVE BELT
See Figure 17


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Fig. Fig. 17: Air pump belt adjustment-2.2L engines
When servicing the air pump, use the square holes provided in the pulley to prevent camshaft rotation.

  1. Remove the nuts and bolts retaining the drive pulley cover.
  2. Remove the locking bolt and pivot bolt from the pump bracket, then remove the pump.
  3. Remove the belt and install a replacement.
  4. Position the pump, then install the locking bolt and pivot bolt finger-tight.
  5. Install a 1 / 2 in. breaker bar into the bracket assembly (block the drive pulley to prevent camshaft rotation), and adjust the belt to specification.
  6. Tighten locking bolt and pivot bolt to 25 ft. lbs. (35 Nm).

2.5L Engines
AIR CONDITIONING COMPRESSOR
See Figure 18


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Fig. Fig. 18: Drive belt adjustment points-2.5L engines

  1. Loosen the idler bracket pivot screw and the locking screws to replace, or adjust belt.
  2. Remove the belt and install a replacement.
  3. Adjust the belt to specification by applying torque to weld nut on the idler bracket.
  4. Tighten locking screw first, followed by the pivot screw. Tighten to 40 ft. lbs. (55 Nm).

ALTERNATOR BELT
See Figure 18
If replacement of the alternator belt is required, the A/C drive belt must first be removed.
  1. Loosen the pivot nut, locking nut, and adjusting screw.
  2. Remove the belt and install a replacement.
  3. Adjust the belt to specification by tightening the adjusting screw.
  4. Tighten the locking nut to 25 ft. lbs. (35 Nm).
  5. Tighten the pivot nut to 30 ft. lbs. (40 Nm).

POWER STEERING PUMP
See Figure 18
If replacement of the power steering belt is required, the A/C and alternator belts must first be remove.
  1. Loosen the locking screw and pivot screw to replace, or adjust the belt.
  2. Remove the belt and install a replacement.
  3. Using a 1 / 2 in. breaker bar positioned in adjusting bracket slot, adjust the belt to specification.
  4. Tighten the locking screw followed by the pivot screw. Tighten to 40 ft. lbs. (55 Nm).

2.6L Engines
ALTERNATOR/AIR CONDITIONING COMPRESSOR BELT
See Figure 19


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Fig. Fig. 19: Drive belt adjustment points-2.6L engines

  1. Loosen the locking screw, jam nut, and pivot nut.
  2. Loosen the adjusting screw.
  3. Remove the belt and install a replacement.
  4. Adjust the belt to specification by tightening the adjusting screw.
  5. Tighten the locking screw followed by the pivot nut. Tighten to 16 ft. lbs. (22 Nm).
  6. Tighten the jam nut to 21 ft. lbs. (28 Nm).

POWER STEERING PUMP BELT
See Figure 19
If replacement of the power steering belt is required, the alternator and A/C belt must first be remove.
  1. Loosen the pivot screw, and the locking screw.
  2. Remove the timing pickup.
  3. Remove the belt and install a replacement.
  4. Install a 1 / 2 in. breaker bar in the adjusting bracket slot, torque to specification.
  5. Tighten the locking screw, followed by the pivot screw. Tighten to 40 ft. lbs. (55 Nm).
  6. Install the timing pick-up, and tighten to 160 inch lbs. (18 Nm).

Jul 26, 2012 | 1994 Dodge Grand Caravan

1 Answer

Need torque specifications for rocker arms on 3.1 liter chevrolet engine


  1. Install the pushrods in their original location, making sure they seat in the lifter sockets.
  2. Install the rocker arms and ball, then tighten the nuts to 14-20 ft. lbs. (19-27 Nm).

Dec 11, 2010 | 1994 Pontiac Grand Prix

2 Answers

How do I tighten the valves down? its making a


Ford valves are not adjustable, something is wrong. There are oversized pushrods that can be installed, but something is wrong to have valve noise, unless they backed off, somehow.

Nov 02, 2010 | 1998 Ford Explorer

2 Answers

Heads replaced: How to adjust valves on 1999 Taurus 3.0


Doesn't the OHV engine have hydraulic lifters? If so there is no adjustment.

Sep 24, 2010 | 1994 Ford Taurus

1 Answer

How to change the starter from my 1994 chevy camaro


REMOVAL & INSTALLATION 3.4L and 1993-95 5.7L Engines
  1. Disconnect the negative battery cable.
  2. Raise and safely support the vehicle.
  3. If necessary for access to the starter, disconnect the exhaust crossover pipe from the manifolds.
  4. Unfasten the two starter mounting bolts/screws and carefully lower the starter motor.


To install:

Before attaching the electrical connectors, tighten the inner nuts on the solenoid terminals. If the nuts are not tight, the solenoid cap could be damaged during installation of the leads. Tighten the inner nut of the "BAT" terminal to 80 inch lbs. (9 Nm).
  1. Fasten the electrical leads to the starter motor assembly. Tighten the solenoid switch "BAT" terminal outer nut to 80 inch lbs. (9 Nm) and the "S" terminal nut to 22 inch lbs. (2.5 Nm).
  2. Position the starter motor to the engine and install the retaining bolts/screws. Tighten to 35 ft. lbs. (47 Nm).
  3. Measure the starter pinion-to-flywheel clearance and add shims, if necessary.
  4. If removed, connect the exhaust crossover pipe to the manifolds.
  5. Carefully lower the vehicle, then connect the negative battery cable. Tighten the cable to 11 ft. lbs. (15 Nm).

Hope helps.

Sep 06, 2010 | 1994 Chevrolet Camaro

1 Answer

Valve clearance on Chevy 2.2 engine


There is no adjustment.These are hydraulic lifters.Rocker arm nuts are tightened at 22 ft.lbs.Hope this helps.Good luck.

Aug 25, 2010 | 1994 Chevrolet S-10

2 Answers

Is there a diagram for the cylinder heads of a 1991 5.7 liter engine, especially the valve components? Thank you, Dan


Hydraulic Lifters REMOVAL & INSTALLATION 4.8L Engines
  1. Remove the rocker cover.
  2. Remove the engine side cover.
  3. Back off the rocker arm adjusting nuts and remove the pushrods. Keep them in order for installation.
  4. Reaching through the side cover opening, lift out the hydraulic lifters. If your are going to re-use the lifters, remove them one at a time and mark each one for installation. They must be re-installed in the same locations. If a lifter is stuck, it can be removed with a grasping-type lifter tool, available form most auto parts stores.
  5. Inspect each lifter thoroughly. If any of them shows any signs of wear, heat bluing or damage, replace the whole set. To install:
  6. Install and coat each lifter with engine oil supplement.
  7. Install the remaining components by reversing the removal procedure.
  8. Once installation is complete, adjust the valves as described in the valve lash procedure. Fig. 1: Stuck lifters must be freed using a slide hammer type lifter removal tool tccs3813.jpg
4.3L, 5.0L, 5.7L And 7.4L Engines
  1. Remove the cylinder head cover.
  2. Remove the intake manifold.
  3. Back off the rocker arm adjusting nuts and remove the pushrods. Keep them in order for installation.
  4. Remove the lifter retainer bolts, retainer and restrictor.
  5. Remove the lifters. If your are going to re-use the lifters, remove them one at a time and mark each one for installation. They must be re-installed in the same locations. If a lifter is stuck, it can be removed with a grasping-type lifter tool, available from most auto parts stores.
  6. Inspect each lifter thoroughly. If any of them shows any signs of wear, heat bluing or damage, replace the whole set.
  7. Coat each lifter with engine oil supplement prior to installation. Tighten the retainer bolts to 12 ft. lbs. (16 Nm). Adjust the valves as described in the valve lash procedure.
6.2L And 6.5L Diesel Engines Fig. 2: Diesel engine valve lifter 84903155.gif
  1. Remove the cylinder head cover.
  2. Remove the rocker arm shaft, rocker arms and pushrods. Keep all parts in order and properly identified for installation.
  3. Remove the clamps and lifter guide plates.
  4. Remove the lifters by reaching through the access holes in the cylinder head with a magnetic lifter tool. If you are going to re-use the lifters, remove them one at a time and mark each one for installation. They must be re-installed in the same locations. If a lifter is stuck, it can be removed with a grasping-type lifter tool, available form most auto parts stores. To install:
  5. Inspect each lifter thoroughly. If any of them shows any signs of wear, heat bluing or damage, replace the whole set. NOTE: Some engines will have both standard and 0.010 in. (.0039mm) oversize lifters. The oversized lifters will have "10'' etched into the side. The block will be stamped "OS'' on the cast pad next to the lifter bore. and on the top rail of the crankcase above the lifter bore. WARNING
    New lifters must be primed before installation. Damage to the lifters and engine will result if new lifters are installed dry!
  6. Prime new lifters by immersing them in clean kerosene, engine oil or diesel fuel and working the lifter plunger while the unit is submerged.
  7. Prior to installation, coat the lifter roller with engine oil supplement. Re-used lifters must be installed in their original positions!
  8. Install the lifters.
  9. Install the guide plates and clamps. Tighten the clamp bolts to 18 ft. lbs. (26 Nm).
  10. After all the clamps are installed, turn the crankshaft by hand, 2 full turns (720°) to ensure free movement of the lifters in the guide plates. If the crankshaft won't turn, one or more lifters may be jamming in the guide plates.
  11. The remainder of assembly the reverse of disassembly.
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Aug 17, 2010 | Chevrolet Suburban 1500 Cars & Trucks

2 Answers

Valve noise


I am from the old school. Start the engine with the valve covers off, back off the rocker nut until the rocker starts tapping then slowly tighten nut until tapping stops then go an 1/8 of a turn tighter. Repeat the same for the rest.I know it will be very messy and you have to watch the oil on the exhaust manifolds for a fire. There will be a lot of smoke. What I do is cut out sheet metal and use it as a shield so the oil does not flow over the head as much.

Dec 27, 2008 | 1994 Chevrolet C1500

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