Question about 1997 Honda Accord

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Timing belt tightener

When the engine is running you can here the belt slapping aganist timing belt casing took casing off and there is two springs one on each side and belt tightener but the tightener will only loosen and will not tighten any more dose this mean that the tightener is at its capacity or does it mean that it ceased and whst could i do to fix this problem.

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  • 38 Answers

If the Tensioner is at its max travel, and won't go any further it is either siezed or simply at its capacity. As far as which one it is, I'm afraid there is little way to tell without actually being there looking at it.

However! I must stress to you that dealing with the timing belt and/or tensioner should be done by a Qualified Honda Technician. It is possible to seriously damage your engine's internal components if a miscalulation or mis-step is performed while uninstalling or reinstalling the timing belt.

Posted on May 16, 2008

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Timing belt timing marks


Instructions
  1. Remove the Timing Belt 3.0 V6
    • Place the Voyager's engine in the TDC no. 1 position for cylinder firing in order to get proper alignment. Disconnect the negative cable on the battery.
    • 2Take off the accessory drive belts, and take out engine mount insulator, located in the engine support bracket. Detach the engine support bracket and take off the torsional damper and crankshaft pulleys. This ensures easier access to the timing belt.

    • 3. Locate the 2- to 3-inch wide timing belt in the front of the engine. Remove the cover of the timing belt.
    • 4Mark the course of rotation on the belt as a reference if you plan to reinstall it. Slacken the timing belt torsioner bolt and take off the timing belt. Detach the timing belt torsioner if needed.
    • 5Remove the crankshaft sprocket and the flange shield of the crankshaft sprocket. Secure the camshaft sprocket using a spanner tool MB990775, or something similar, and take off the bolt and washer to the camshaft sprocket.
    Install the Timing Belt
    • 6Use the retaining washer and bolt to fit the camshaft sprocket onto the camshaft. Utilize the spanner tool MB990775 and tighten the bolt. Mount the crankshaft sprocket and put on the timing belt torsioner and tensioner spring if it was removed. Hook the higher end of the spring to the water pump pin and bottom end to the tensioner bracket with the hook facing out.
    • 7Rotate the timing belt tensioner in a counterclockwise turn and tighten the bolt to momentarily hold it in place. Turn the crankshaft sprocket until the timing mark lines up with the timing mark on the oil pump timing mark. Revolve the back camshaft sprocket so that its timing mark lines up with the generator bracket timing mark. Turn the radiator side camshaft sprocket so that the mark aligns with the inner timing belt cover mark.
    • 8Connect the timing belt onto the Voyager's crankshaft sprocket, keeping the belt tight on the side of tension. Install the belt in the same rotational direction if using the original timing belt. Put the timing belt on the radiator side of the camshaft sprocket, and place the belt underneath the water pump pulley first, and follow that by putting it over the back camshaft sprocket and the tensioner.
    • 9Create tension on the side of the timing belt and correctly line up all timing marks. Put the crankshaft sprocket flange into place and loosen the tensioner bolt to allow the tensioner spring to put tension on the belt. Turn the crankshaft two clockwise turns. Line up the timing marks and tighten the tensioner bolt. Put on the timing belt cover and engine support bracket.
    • 10Put the engine mount insulator, crankshaft pulleys and torsional damper into place. Mount the accessory drive belts, connect the negative battery cable and check that the engine runs properly.

Sep 12, 2012 | 1988 Plymouth Voyager

Tip

How to change a timing belt on a hyundai Elantra 1.5 , 1.6 and 2.0 engine


1.5L And 1.6L Engines
  1. Remove all necessary components for access to the timing belt cover, then remove the cover.
  2. Rotate the crankshaft clockwise and align the timing marks so No.1 piston will be at Top Dead Center (TDC) of the compression stroke.
  3. Loosen the tensioning bolt and the pivot bolt on the timing belttensioner. Move the tensioner as far as it will go toward the waterpump. Tighten the adjusting bolt.
  4. Mark the timing belt with an arrow showing direction of rotation if belt is to be reused.
  5. Remove the timing belt.
  6. If defective, remove the timing belt tensioner.

To install:


0900c1528019701f.jpgenlarge_icon.gifenlarge_tooltip.gifFig. Proper pulley alignment for timing belt installation at TDC-Hyundai 1.5L DOHC engines


0900c15280197020.jpgenlarge_icon.gifenlarge_tooltip.gifFig. Proper pulley alignment for timing belt installation at TDC-Hyundai 1.5L SOHC engines
  1. Align the timing marks of the camshaft sprocket and check that the crankshaft timing marks are still in alignment.
  2. If removed, install the timing belt tensioner, spring and spacer with the bottom end of the spring free. Tighten the adjusting bolts lightly with the tensioner moved as far as possible away from the water pump.
  3. Install the free end of the spring into the locating tang on the front case.
  4. Position the timing belt over the crankshaft sprocket, then over the camshaft sprocket. Slip the back of the belt over the tensioner wheel.
  5. Turn the camshaft sprocket in the opposite of its normal direction of rotation until the straight side of the belt is tight and be sure the timing marks align.
    NOTE If the timing marks are not properly aligned, shift the belt 1tooth at a time in the appropriate direction until they are aligned.
  6. Loosen the tensioner mounting bolts so the tensioner works,without the interference of any friction, under spring pressure. Be sure the belt follows the curve of the camshaft pulley so the teeth are engaged all the way around. Correct the path of the belt, if necessary.
  7. Tighten the tensioner adjusting bolt, then the tensioner pivot bolt to 15-18 ft. lbs. (20-26 Nm).
    NOTE Bolts must be tightened in the stated order or tension won't be correct.
  8. Turn the crankshaft 1 turn clockwise until timing marks again align to seat the belt.
  9. Loosen both tensioner attaching bolts and let the tensioner position itself under spring tension. Retighten the bolts.
  10. Check belt tension by putting a finger on the water pump side ofthe tensioner wheel and pull the belt toward the water pump. The belt should move toward the pump until the teeth are approximately 1 / 2 of the way across the head of the tensioner adjusting bolt. Re-tension the belt, if necessary.
  11. Install the timing belt covers and all other related components.
moz-screenshot.jpg6a4c46b.jpg8c77128.jpg74ba305.jpg

on Dec 01, 2009 | Hyundai Elantra Cars & Trucks

1 Answer

Water pump 2000 3.0 liter dodge caravan


For The 3.0 Motor. (3.3 Way down the line.)

Drain cooling system.
Remove timing belt. Refer to Engine for procedure.
Remove water pump mounting bolts.
Separate pump from water inlet pipe and remove water pump.

Timing Belt Removal
Raise vehicle and remove accessory drive belt splash shield (Fig. 66).
Remove accessory drive belts.
Remove crankshaft pulley and damper (Fig. 68).
Support engine and remove right side engine mount.
Remove engine support bracket (Fig. 67).
Remove timing belt covers (Fig. 67).
Mark belt running direction for installation (Fig. 69).
Loosen timing belt tensioner bolt (Fig. 71) and remove timing belt.
Remove crankshaft sprocket flange shield (Fig. 68). CAMSHAFT SPROCKETS To remove camshaft sprockets
Hold camshaft sprocket with Spanner Tool MB-990775. Loosen and remove bolt and washer (Fig. 70).
Remove camshaft sprocket from camshaft. To install camshaft sprockets:
Place camshaft sprocket on camshaft.
Install bolt and washer to camshaft. Using Spanner Tool MB-990775, hold camshaft sprocket and torque bolt to 95 Nm (70 ft. lbs.) (Fig. 70). TIMING BELT TENSIONER
Install timing belt tensioner and tensioner spring.
Hook spring upper end to water pump pin and lower end to tensioner bracket with hook out (Fig. 71).
Turn timing belt tensioner counterclockwise full travel in adjustment slot and tighten bolt to temporarily hold this position (Fig. 72).

INSTALLATION


Install timing belt on crankshaft sprocket and keep belt tight on tension side (Fig. 69). Install belt on the front (radiator side) camshaft sprocket. Install belt on the water pump pulley, rear camshaft sprocket and finally on the timing belt tensioner.
Rotate the front camshaft sprocket in opposite direction to take up belt slack. Check that all timing marks are aligned (Fig. 69).
Install crankshaft sprocket flange (Fig. 68).
Loosen tensioner bolt and allow spring to tension timing belt.
Turn crankshaft two full turns in clockwise direction. Turn smoothly and in clockwise direction ONLY.
Align the timing marks on the sprockets and tighten the timing belt tensioner locking bolt to 28 Nm (250 in. lbs.) torque.
Install timing belt covers.
Install engine support bracket.
Install right side engine mount.
Install crankshaft damper and pulleys (Fig. 68). Tighten damper center bolt to 135 Nm (100 ft. lbs.) .
Install accessory drive belts.
Install accessory drive belt splash shield (Fig. 66).

Be sure to also replace all the cam and crank seals why you are there. Might as well put a belt on too.

FOR THE 3.3 OR 3.8 MOTORS.

Drain Cooling System.
Remove accessory drive belt.
Remove right front lower fender shield.
Remove water pump pulley bolts and remove pulley.
Remove water pump mounting screws. Remove water pump.
Remove and discard O-ring seal.
Clean O-ring groove and O-ring surfaces on pump and chain case cover. Take care not to scratch or gouge sealing surface

Installation

Install new O-ring into groove.
Install water pump to chain case cover. Tighten screws to 12 Nm (105 inch lbs.) .
Rotate pump by hand to check for freedom of movement.
Position pulley on pump. Install screws and tighten to 30 Nm (250 inch lbs.) .
Install accessory drive belt.
Install right front lower fender shield.
Refill Cooling System.

FOR THE 2.4 MOTOR

Disconnect negative cable from battery.
Raise vehicle on a hoist. Remove right inner splash shield.
Remove accessory drive belts.
Drain cooling system.
Support engine from the bottom and remove right engine mount.
Remove right engine mount bracket.
Remove timing belt. Refer to Engine for procedure.
Remove timing belt idler pulley.
Hold camshaft sprocket with Special tool C-4687 and adaptor C-4687-1 while removing bolt. Remove both cam sprockets.
Remove rear timing belt cover.

Install new O-ring gasket in water pump body O-ring groove. CAUTION: Make sure O-ring is properly seated in water pump groove before tightening screws. An improperly located O-ring may cause damage to the O-ring and cause a coolant leak.
Assemble pump body to block and tighten screws to 12 Nm (105 inch lbs.) . Pressurize cooling system to 15 psi with pressure tester and check water pump shaft seal and O-ring for leaks.
Rotate pump by hand to check for freedom of movement.
Install rear timing belt cover.
Install camshaft sprockets and torque bolts to 101 Nm (75 ft. lbs.) .
Install timing belt idler pulley and torque mounting bolt to 61 Nm (45 ft. lbs.) .
Install timing belt. Refer to Engine for procedure.
Install right engine mount bracket and engine mount. Refer to Engine for procedure.
Fill cooling system.
Install accessory drive belts.
Lower vehicle and connect battery cable.

Mar 29, 2012 | Cars & Trucks

1 Answer

I want to know what pulley i remove/tighten first upon removal/installation on a 1999 cadillac catera timing belt.


Do you mean the serpentine engine belt that is on the outside or the timing chain within the engine case?, if it is outside, you should see a belt diagram on the engine crossmember, near the radiator, showing you how the belt is routed on the pulleys, also there should be a spring loaded pulley that keeps tension of the belt automatically, no adjusting of the belt, it will adjust the tension as needed, makes it easy, just pay attention to how it is routed, if you can't find a diagram sticker under the hood, then draw your own before you get it removed, also use a long pry bar to get the spring loaded pulley to work in you favor, good luck Rick

Sep 02, 2011 | 1999 Cadillac Catera

2 Answers

Timing belt


TIMING BELT & SPROCKETS R & I
NOTE: Some procedures may differ slightly due to engine
construction.
Removal
1) Remove all necessary air ducts. Position No. 4 piston at
TDC of compression stroke. Align timing marks. See Fig. 2. Remove fan
and fan shroud. Remove belts. If necessary, remove radiator and
splashguard.
2) Prevent engine from rotating and remove crankshaft timing
pulley retaining bolt. Remove upper and lower timing belt covers.
Remove spring from tension pulley. Loosen adjusting bolt and move
pulley toward water pump. Remove timing belt.
CAUTION: Ensure pistons are at TDC when rotating camshaft or damage
may result.
Inspection
1) Handle timing belt carefully. Avoid twisting or kinking
belt. Do not allow belt to become contaminated by water, oil, dirt or
other contaminates. Inspect belt for cracks or damage. If necessary,
replace.
2) Measure tension pulley spring length and force. Spring
length should not exceed 2.76" (70.2 mm) and spring force should not
be less than 197-347 lbs. (27-48 kg).
3) Replace tension pulley spring if not within specification.
Installation
1) Pull tensioner fully toward water pump side and
temporarily tighten retaining bolt. Ensure No. 4 cylinder is at TDC on
compression stroke by rotating crankshaft until keyway aligns with
mark on front crankshaft seal housing (12 o'clock). Rotate camshaft
until timing mark on cam gear (arrow) aligns with mark on upper
camshaft cover (notch). See Fig. 2.
NOTE: When timing marks are aligned as stated above, No. 4 piston
is at TDC on compression stroke.
2) Position timing belt over crankshaft sprocket, oil pump
sprocket, camshaft sprocket and tensioner in that order. Ensure belt
is positioned in sequence given and without slack between sprockets.
Loosen tension sprocket adjusting bolt allowing spring tension to
tighten belt. Tighten adjusting bolt temporarily.
3) Temporarily install crankshaft pulley bolt and rotate
crankshaft 2 complete revolutions in opposite direction of engine
rotation, until marks on crankshaft and front oil seal retainer are
aligned again. See Fig. 2. Loosen tensioner lock bolt, allowing
tesioner spring to fully adjust tension. Tighten tensioner lock bolt.
4) Install timing belt covers. To complete installation,
reverse removal procedures. Tighten all bolts to specification. See
TORQUE SPECIFICATIONS table at end of this article.
Fig. 2: 2.3L & 2.6L Timing Alignment Marks
Courtesy of Isuzu Motor Co

Dec 13, 2010 | 1989 Isuzu Pickup 2WD

2 Answers

How do you make the tensioner release to tighten the timing belt?


The belt tensioner keeps the belt tight inside each accessory pulley while the engine is running. The tensioner is made up of a spring-loaded arm. If the spring inside of the tensioner becomes loose then it will not be able to hold the belt properly.And belt will also get loose. The belt tensioner is on the engine underneath the alternator. Its fitted by bolt.To loose the belt you will need drive socket and breaker bar .Turn the breaker bar counterclockwise to release tension from the belt.Remove the mounting bolt at the top center of the tensioner arm.The tensioner arm is loose and will easily come out.If you in-case are to replace the tensioner then place the new tensioner in same place and tighten the bolt which you removed.Before removing or moving the belt check the position of the belt passing from each pulley.so that when you fit the parts there is no problem in fitting the parts.
After its done.Start the engine and see that belt and tensioner runs freely and belt moving from each pulley smoothly.
------------- This will help.Thanks.Helpmech.

Dec 06, 2010 | Pontiac Grand Am Cars & Trucks

1 Answer

Need to know what the timing marks and locations for replacing the timing belt


Timing Belt Removal & Installation 3.0L Engine To Remove:
Exploded view of the timing belt and sprocket assembly (3.0L engine) 86723255.gif

  1. Disconnect the negative battery cable.
  2. Remove the accessory drive belts. Remove the engine mount insulator from the engine support bracket.
  3. Remove the engine support bracket. Remove the crankshaft pulleys and torsional damper. Remove the timing belt covers.
  4. Rotate the crankshaft until the sprocket timing marks are aligned. The crankshaft sprocket timing mark should align with the oil pump timing mark. The rear camshaft sprocket timing mark should align with the generator bracket timing mark and the front camshaft sprocket timing mark should align with the inner timing belt cover timing mark.
  5. If the belt is to be reused, mark the direction of rotation on the belt for installation reference. Mark the direction of travel for the timing belt for correct installation 86723p72.jpg
  6. Loosen the timing belt tensioner bolt and remove the timing belt.
  7. If necessary, remove the timing belt tensioner. Turn the center tensioner pulley bolt until the timing belt has enough slack . . . 86723p73.jpg
    . . . then slide the timing belt off of the camshaft sprockets 86723p74.jpg
  8. Remove the crankshaft sprocket flange shield and crankshaft sprocket.
  9. Hold the camshaft sprocket using spanner tool MB990775 or equivalent, and remove the camshaft sprocket bolt and washer. Remove the camshaft sprocket.
To Install:
  1. Install the camshaft sprocket on the camshaft with the retaining bolt and washer. Hold the camshaft sprocket using spanner tool MB990775 or equivalent, and tighten the bolt to 70 ft. lbs. (95 Nm).
  2. Install the crankshaft sprocket.
  3. If removed, install the timing belt tensioner and tensioner spring. Hook the spring upper end to the water pump pin and the lower end to the tensioner bracket with the hook out.
  4. Turn the timing belt tensioner counterclockwise full travel in the adjustment slot and tighten the bolt to temporarily hold it in this position.
  5. Rotate the crankshaft sprocket until its timing mark is aligned with the oil pump timing mark.
  6. Rotate the rear camshaft sprocket until its timing mark is aligned with the timing mark on the generator bracket.
  7. Rotate the front (radiator side) camshaft sprocket until its mark is aligned with the timing mark on the inner timing belt cover.
  8. Install the timing belt on the crankshaft sprocket while keeping the belt tight on the tension side. NOTE: If the original belt is being reused, be sure to install it in the same rotational direction.
  9. Position the timing belt over the front camshaft sprocket (radiator side). Next, position the belt under the water pump pulley, then over the rear camshaft sprocket and finally over the tensioner. CAUTION
    If any binding is felt when adjusting the timing belt tension by turning the crankshaft, STOP turning the engine, because the pistons may be hitting the valves.
    Rent or borrow the special tool to hold the camshaft sprockets steady . . . 86723p75.jpg
    . . . while loosening the center retaining bolt on the camshaft pulley, then . . . 86723p76.jpg
    . . . remove the camshaft sprocket from the end of the camshaft 86723p77.jpg
    Timing belt tensioner and spring positions 86723254.gif
    Timing belt routing and timing mark locations 86723256.gif

  10. Apply rotating force in the opposite direction to the front camshaft sprocket (radiator side) to create tension on the timing belt tension side. Check that all timing marks are aligned.
  11. Install the crankshaft sprocket flange.
  12. Loosen the tensioner bolt and allow the tensioner spring to tension the belt.
  13. Rotate the crankshaft two full turns in a clockwise direction. Turn the crankshaft smoothly and in a clockwise direction only.
  14. Again line up the timing marks. If all marks are aligned, tighten the tensioner bolt to 250 in. lbs. (28 Nm). Otherwise repeat the installation procedure.
  15. Install the timing belt covers. Install the engine support bracket. Tighten the support bracket mounting bolts to 35 ft. lbs. (47 Nm).
  16. Install the engine mount insulator, torsional damper and crankshaft pulleys. Tighten the crankshaft pulley bolt to 112 ft. lbs. (151 Nm).
  17. Install the accessory drive belts.
  18. Reconnect the negative battery cable.
  19. Run the engine and check for proper operation.
prev.gif next.gif

Aug 17, 2010 | 1997 Dodge Caravan

2 Answers

Looking for timing mark's for a 1997 camry with a 2.2 4cyl motor?


Hi,


You find the timing marks on the picture below.

moz-screenshot-2.pngaab8238.jpg



Removal
Remove auxiliary 1. drive belts.
2. Support engine.
Remove:
Engine mounting and bracket.
Timing belt upper cover [1].
3.
4. Turn crankshaft clockwise to TDC on No.1 cylinder. Ensure timing marks aligned [2] & [3].
Remove:
Crankshaft pulley bolt [4].
Crankshaft pulley [5]. Use tool No.09213-60017.
5.
6. Ensure timing marks aligned [2] & [3].
7. Slacken tensioner bolt [6]. Move tensioner away from belt and lightly tighten bolt.
Remove:
Timing belt lower cover [7].
Crankshaft sprocket guide washer [9].
Timing belt.
Tensioner pulley.

Installation
Installation
1. Check tensioner pulley for smooth operation.
2. Check free length of tensioner spring is 46,0 mm [8]. Replace spring if necessary.
3. Fit tensioner and spring. Ensure spring is connected correctly.
4. tighten bolt [6].
5. Ensure timing marks aligned [2] & [3].
6. Fit timing belt. Ensure belt is taut between sprockets.
Install:
Crankshaft sprocket guide washer [9].
Timing belt lower cover [7].
Crankshaft pulley [5].
7.
8. Slacken tensioner bolt 1/2 turn [6].
9. Turn crankshaft two turns clockwise to TDC on No.1 cylinder. Ensure timing marks aligned [2] & [3].
Turn crankshaft slowly 1 7/8 turns clockwise until crankshaft pulley timing mark [3] aligned with 45° BTDC mark [10] on
timing belt lower cover [7].
10.
11. Tighten tensioner bolt [6]. Tightening torque: 42 Nm.
12. Install components in reverse order of removal.
13. Tighten crankshaft pulley bolt [4]. Tightening torque: 108 Nm.
Manufacturer: Toyota

Jun 25, 2010 | 1997 Toyota Camry

1 Answer

Replace timing belt


1993–96 2.3L and 2.6L Engines
  1. Disconnect the negative battery cable.
  2. Loosen and remove the engine accessory drive belts.
  3. Remove the cooling fan assembly and the water pump pulley.
  4. Drain the fluid from the power steering reservoir.
  5. Unbolt and remove the power steering pump. Unbolt the hydraulic line brackets from the upper timing cover and move the pump out of the work area without disconnecting the hydraulic lines.
  6. Disconnect and remove the starter motor if a flywheel holder (part No. J–38674) is to be used.
  7. Remove the upper timing belt cover.
  8. Rotate the crankshaft to set the engine at TDC/compression for the No. 1 cylinder. The arrow mark on camshaft sprocket aligns with mark on the rear timing cover.
  9. Remove the crankshaft pulley.
  10. Remove the lower timing belt cover.
  11. Verify that the engine is set at TDC/compression for the No. 1 cylinder. The notch on the crankshaft sprocket aligns with the pointer on the oil seal retainer.
  12. Release and remove the tensioner spring to release the timing belt's tension.
  13. Remove the timing belt.
  14. Unbolt the tensioner pulley bracket from the engine's front cover.
  15. If necessary, unbolt and remove the camshaft sprockets. Use a puller to remove the crankshaft pulley if necessary. Don't loose the crankshaft sprocket key. To install:
  16. Install the camshaft and crankshaft sprockets if they were removed. Align the timing marks and be sure to install any keys. Tighten the camshaft sprocket bolt to 43 ft. lbs. (59 Nm).
  17. Install the tensioner assembly. Tighten the tensioner mounting bolt to 14 ft. lbs. (19 Nm). Tighten the cap bolt to 9 ft. lbs. (13 Nm).
  18. Make sure the crankshaft and the camshaft sprockets are aligned with their timing marks. Install the timing belt onto the sprockets using the following sequence: first, crankshaft sprocket; second, oil pump sprocket; third, camshaft sprocket.
  19. Loosen the tensioner mounting bolt. This will allow the tensioner spring to apply pressure to the timing belt.
  20. After the spring has pulled the timing belt as far as possible, temporarily tighten the tensioner mounting bolt to 14 ft. lbs. (19 Nm). NOTE: Remove the flywheel holder before rotating the crankshaft. Reinstall the holder to torque the crankshaft pulley bolt.
  21. Rotate the crankshaft counterclockwise two complete revolutions to check the rotation of the belt and the alignment of the timing marks. Listen for any rubbing noises which may mean the belt is binding.
  22. Loosen the tensioner pulley bolt to allow the spring to adjust the correct tension. Then, retighten the tensioner pulley bolt to 14 ft. lbs (19 Nm).
  23. Install the lower timing cover and the crankshaft pulley.
  24. Tighten the crankshaft pulley bolt to 87 ft. lbs. (118 Nm). Tighten the small pulley bolts to 6 ft. lbs. (8 Nm).
  25. Install the upper timing cover.
  26. Install the starter if it was removed. Tighten the bolts to 30 ft. lbs. (40 Nm).
  27. Install the power steering pump. If the hydraulic lines were disconnected, refill and bleed the power steering system.
  28. Install the water pump pulley and tighten its nut to 20 ft. lbs. (26 Nm).
  29. Install the cooling fan assembly.
  30. Install and adjust the accessory drive belts.
  31. Connect the negative battery cable.

Jun 26, 2009 | 1995 Isuzu Trooper

1 Answer

Engine knocking


Hi,
Good news is - I don't think you need a new engine.

As there are many moving parts that could create a knocking sound, it usually needs careful inspection to identify where it is from.
I will give a list of some of the causes and remedies. Yours will probably be one of them, but unless I was there - it could be any.

Loose exhaust component (causes rattles and thumps) - replace parts or joints.
Loose Engine mounts - Engine will move about a lot more than normal - Replacement of mounts.
Fraying Belts - causes continual ticking or slapping - Replace belts and check tension.
Timing is off - bad running, lack of power, pre ignition or knocking at low revs. Check timing belt - Replace, Tune engine.
Cracked valve - slight misfire worse at low revs - Replacement valves.
Clutch Problems - Broken spring or loose bolt - Check clutch plate - replace clutch plates.
Older engines - often accompanying smoke -
Broken Piston ring - continual ticking or occasional misfire - Replace Piston rings
Worn Piston bearings - Piston Slap - Replacement of all piston bearings.

Transmission Problems (only heard when in gear or with clutch out) - Broken gear teeth or worn bearings - Replacement of Transmission or rebuild.

Some of these remedies require engine removal and strip down, others are a simpler fix.

Dec 26, 2008 | 1990 Cadillac Fleetwood

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