Question about 1992 Honda Prelude

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H23 92 Prelude - Crank Pulley fell off

I didn't TORQUE the bolt over the crank pulley, and after two weeks of driving, my bolt, followed by crankshaft ;/ underdrive pulley fell off about 35-40 mph. The car died instantly, ran over the pulley, alternator belt was found a hundred feet back intact. Tried to start the car, and it would only spin really fast. towed it home. Upon pulling off the balancer pulley, I saw that the key had bent out, and crank key hole was opposite the balancer pulley.

What damage could I / did I do??? There appears to be no damage other than the missing pulley and bolt. Got a new pulley, key and bolt, about to put them on. Any ideas???

Posted by Anonymous on

  • 3 more comments 
  • Anonymous Oct 15, 2009

    I set everything at TDC, cam gears, crankshaft and balancers, front and rear. Lines up perfect everywhere, including flywheel. It is a 5 speed m/t btw. I just tried firing it up, and it does the same thing. I hear the fuel pump come on, I know I have spark, and gas. Checked the main relay.

    Here's a short video of the sound it makes when I turn it over, and it will NOT fire up.
    http://www.youtube.com/watch?v=ye8fSosaH...

  • Anonymous Oct 16, 2009

    To be even MORE precise:

    When I turn the ignition on, I hear the fuel pump prime, replaced the main relay cause it was free, and it works, but when I hit the ignition, the starter whines as in the video above. The engine spins, but will not fire at all. All belts, cams and pulleys turn. So I am guessing the starter is engaging, I'm at a complete loss of ideas now.

  • Anonymous Nov 16, 2009

    So after weeks of eliminating stuff, I discover the fuel lines were smashed pretty good when the pulley fell off. In two places. Would this explain why it won't fire?? I noticed after bending them back a bit I get a pop or two similiar to a backfire. So I must not be getting enough fuel to fire it up?!?!?!??

  • Anonymous Nov 22, 2009

    So after replacing the fuel lines, same thing. Nothing changes (but the fuel lines needed replaced anyways). Any more suggestions I'm out....

  • Anonymous Jan 10, 2010

    So.... it's been a a while. So today got a compression check, 0 compression all four cylinders. Took the valve cover off, removed all 16 rockers, closing the valves (right?) and still 0 compression? What it the world is going on??? WHY? WHAT?

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  • 30 Answers

Make sure you check timing and the belt. if it spun don't risk putting it back on. Hope you got a new key. TIMING is important so you don't stick a valve through the top of your piston

Posted on Oct 15, 2009

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Timing Chain Replacement procedure steps


1. Jack up front of vehicle and support on safety stands. Remove left front wheel.
2. Remove alternator/water pump drive belt. Remove water pump pulley.
3. Remove A/C belt if equipped.
4. Remove valve cover.
5. Remove upper timing belt cover.
6. Rotate crankshaft until No. 1 cylinder is at TDC compression stroke and camshaft sprocket timing marks align with edge of cylinder head. "UP" cast on sprocket will be at top when sprocket is in correct position. Crankshaft may be rotated using a socket wrench inserted through access hole in left fender well (engine rotates counterclockwise).
7. Unbolt and remove crank pulley. Remove rubber seal washers from belt tensioner pivot and adjustment bolts protruding through lower belt cover. Remove belt cover retaining bolts and remove cover from below.
8. Remove concave belt retainer from end of crankshaft. If timing belt is to be reused, mark direction of rotation before removing.
9. Loosen belt tensioner pivot and adjustment bolts. Push tensioner away from belt and retighten adjustment bolt to hold tensioner in this position. Remove belt.
10. Insert a suitable tool through cam sprocket and brace against cylinder head. Remove bolt and pull sprocket from camshaft.
11. Without dislodging key, install new sprocket on camshaft. Torque bolt to 22 ftlb (30 Nm).
12. Install new timing belt by starting at crank gear and working it over cam sprocket in clockwise direction. Ensure that timing marks are properly aligned.
13. Release tensioner by loosening adjustment bolt. After tensioner contacts belt, retighten bolt.
14. Rotate engine at least one full turn (counterclockwise) and check that timing marks are aligned. Loosen adjustment bolt and allow tensioner to take out any remaining belt slack. Torque adjustment and pivot bolts to 22 ftlb (30 Nm).
15. Install remaining components in reverse order of removal. Torque fasteners to following values:

TORQUE VALUES

Valve Cover Nuts - 7 ftlb (10 Nm)
Cam Sprocket Bolt - 22 ftlb (30 Nm)
Tensioner Pivot Bolt - 22 ftlb (30 Nm)
Tensioner Adjust Bolt - 22 ftlb (30 Nm)
Belt Cover Bolts - 7 ftlb (10 Nm)
Crank Pulley Bolt - 83 ftlb (115 Nm)
Water Pump Pulley Bolts - 9 ftlb (12 Nm)

daves944_3.jpg

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Serpentine belt diagram for 2002 focus


All information contained here and on subsequent pages are subject to the myFordFocus.com Terms of Use Policy, which basically states that myFordFocus.com IS NOT responsible for anything you do to your car... Please read it! :)
Focus Sport Underdrive Crank Pulley Installation This How-To Library article is for the FocusSport crank pulley, which as indicated on the FocusSport product information page, includes a 6061 aluminum lightweight crank underdrive pulley and a new Goodyear Gatorback accessory belt. The FocusSport crank pulley underdrives your accessories by 23%. This, in turn, decreases the drag on the engine, unleashing power that you never knew you had. And since the FocusSport (7.6 ounces) crank underdrive pulley is lighter than OEM (3 lbs. 4 ounces) crank pulley, you'll benefit from the weight reduction of rotating mass; resulting in a more responsive engine. FocusSport crank underdrive pulleys come in a red anodized finish. (Product description taken directly from the FocusSport product page...) Compliments of myFordFocus.com Forum Member: jaymzr74 Time to Complete: .5 - 1 hour Tools Required:
  • 10mm, 15mm, and 18mm sockets, utility knife, torque wrench, breaker bar or impact wrench(optional).
Instructions: (Click images to Enlarge)
car-raised-small.jpg Note: It helps to have the car on a lift before you begin, though not too high up, as you'll need to get at teh top of the engine bay under the hood. If you don't have access to a lift, use a 2 ton jack stand.
splashguard-small.jpg
  1. Remove the plastic splash guard inside the right front fender well.
    • There are two 10mm bolts holding it to the fender.
    • After removing the bolts, it should pop right out.

    wheel-removed-small.jpg
  2. Remove right front wheel.
    bolt-removed-small.jpg
  3. Remove the bolt on the crank pulley
    • Use an impact wrench if you have access to one.
    • This bolt is a regular right-hand thread.

    torgue-small.jpg
  4. Install the new pulley on the crank.
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    • Push it firmly into place by hand first, to avoid binding when you torque it.

    installed-small.jpg
  5. Torque the bolt to 85-91 lb-ft.
    • This is tricky if you don't have an impact, so try to find one.

    belt-small.jpg
  6. Relieve the belt tensioner and route the new belt over the pulley and accessories.
  7. Reinstall the plastic splash guard.
  8. Put your front wheel back on.

Supporting Belt Diagrams Zetec with A/C
zetec-withac-ad.gif Zetec withOUT A/C
zetec-withoutac-ad.gif

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How do set the timing on hyundai excel 1998


Hi,


It seems you are encountering problems trying to set the timing marks in your elantra,not to worry,simply follow the stepwise solution below;
Ensure timing marks aligned [6] & [7] .

STEP 1. Fit timing belt in anti-clockwise direction, starting at crankshaft sprocket. Ensure belt is taut between sprockets.

STEP 2. Slacken tensioner pulley bolt [8].Push tensioner pulley firmly against timing belt to tension belt.



STEP 3. Tighten tensioner pulley bolt [8] . Tightening torque: 43-55 Nm.


STEP 4. Except Matrix: Turn crankshaft one turn clockwise.



STEP 5. Matrix: Turn crankshaft two turns clockwise.


STEP 6. Ensure timing marks aligned [6] .


STEP 7. Apply a load of 2 kg to belt at .Belt should deflect 4-6 mm. If not Adjust position of tensioner pulley.



STEP 8. Install components in reverse order of removal.


STEP 9. Tighten crankshaft pulley bolt [2] . Tightening torque: 170-180 Nm
(7) is timing mark on cam,pin mark to top,hole in spoke below pin mark lines up with mark on head (6) is crank timing mark,pin mark on crank lines up with markS on block.





Good luck.

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Timing belt markings mazda B2500 1998


Timing Belt, Sprockets & Front Cover Removal & Installation Timing belt To Remove:
  1. Disconnect the negative battery cable.
  2. Remove the exhaust side spark plugs, outer timing belt cover, and crankshaft pulley.
  3. Turn the crankshaft until the number one piston is at top dead center (TDC). CAUTION
    The camshaft belt tensioner tool (303-097) can be damaged when trying to relieve belt tension if you attempt to remove the belt without first loosening both the timing belt tensioner adjusting bolt and the spring pivot bolt.
  4. Loosen the timing belt spring pivot bolt, but do not remove it at this point in the procedure.
  5. Loosen the adjusting bolt slowly and release the spring tension.
  6. Turn the tensioner with the camshaft belt tensioner tool (303-097), against the spring pressure, clockwise to the farthest position.
  7. While holding it in this position, tighten the adjusting bolt to hold the tensioner away from the belt.
  8. Remove the timing belt.
To Install:
  1. Be certain that on piston number one, the crankshaft is at TDC with the crankshaft keyway pointing straight up and the circle on the crankshaft sprocket lined up with the notch on the engine front cover.
  2. Line up the timing marks.
  3. Install the timing belt over the crankshaft sprocket going counterclockwise over the oil pump sprocket and over the camshaft sprocket.
  4. Loosen the bolt allowing the tensioner pulley to press against the timing belt. NOTE: The timing belt tensioner should not be tightened or the belt tension will not be evenly distributed over the whole belt.
  5. Turn the crankshaft two revolutions clockwise. Next, slowly bring the crank to the number one position firing position with the keyway on the crank facing up. The dot on the crankshaft gear is lined up with the notch on the front cover.
  6. Check the timing mark alignment again. If necessary, repeat the procedure.
  7. Tighten the bolts. Torque the pivot bolt to 30-40 ft-lb (40-55 Nm). Torque the adjustment/locking bolt to 26-33 ft-lb (35-45 Nm).
  8. Install the crankshaft pulley and tighten the bolt. Torque to 93-121 ft-lb (125-165 Nm).
  9. Install the outer timing belt cover and tighten the bolt. Torque to 70-106 in-lb (8-12 Nm).
  10. Install the exhaust side spark plugs.
Sprockets To Remove:
  1. Remove the timing belt.
  2. Install the camshaft sprocket holding/removing tool (303-098) onto the sprocket.
  3. Remove the camshaft sprocket.
To Install:
  1. Place the key and camshaft sprocket on the shaft.
  2. Install the camshaft sprocket holding/removing tool (303-098) onto the camshaft sprocket and tighten the bolt. Torque to 52-70 ft-lb (70-95 Nm).
  3. Remove the tool then install the timing belt.
Outer Cover To Remove:
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Disconnect the negative battery cable.
  3. Remove the fan shroud.
  4. Loosen the bolts on the water pump pulley, but do not remove them at this point in the procedure.
  5. Remove the drive belt, the water pump pulley, and the fan and clutch assembly.
  6. Recover the refrigerant from the A/C system.
  7. Disconnect the A/C wiring connector.
  8. Remove the A/C compressor from the mounting bracket then remove the A/C mounting bracket with the power steering pump still attached.
  9. Remove the outer timing belt cover.
To Install:
  1. Install the outer timing belt cover. Torque to 70-106 in-lb (8-12 Nm).
  2. Install the A/C mounting bracket with the power steering pump still attached. Torque the M10 bolts and stud to 35 ft-lb (48 Nm) and torque the M8 bolt to 18 ft-lb (25 Nm).
  3. Install the A/C compressor to the mounting bracket. Torque to 16-20 ft-lb (21-28 Nm).
  4. Connect the A/C wiring connector.
  5. Refill the refrigerant into the A/C system.
  6. Install the fan and clutch assembly, the water pump pulley, and the drive belt.
  7. Tighten the bolts on the water pump pulley. Torque to 13-17 ft-lb (17-23 Nm).
  8. Install the fan shroud. Torque to 54-70 in-lb (6-8 Nm).
  9. Connect the negative battery cable.
  10. Start the engine. Check for leaks and repair as necessary.
Inner Cover To Remove:
  1. Loosen oil pump sprocket bolt.
  2. Remove timing belt, timing belt tensioner, oil pump sprocket, and crankshaft pulley.
  3. Remove inner timing belt cover.
To Install:
  1. Install inner timing belt cover.
  2. Install crankshaft pulley. Torque to 93-121 ft-lb (125-165 Nm).
  3. Install the oil pump sprocket.
  4. Install the timing belt tensioner. Torque the pivot bolt to 30-40 ft-lb (40-55 Nm). Torque the adjustment/locking bolt to 26-33 ft-lb (35-45 Nm).
  5. Install the timing belt.
  6. Tighten the oil pump sprocket bolt. Torque to 30-40 ft-lb (40-55 Nm).
  7. Torque the camshaft bolt to 52-70 ft-lb (70-95 Nm).

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1 Answer

2001 mitsubishi mirage engine will crank but it wont start. Was told to change the crankshaft position sensor. Would like to know how


I have changed the crankshaft position sensor a few times and I tell you it is no easy task. It requires almost damn near pulling the motor out of the car. The sensor is located under the timing belt behind the underdrive pulley. This will require you to pull everything off the car on that side of the motor including the motor mount so have a jack with a piece of wood ready to support the motor.(First take off your battery cables) Once you remove all components the remove the timing cover, loosen the timing tension pully (be careful of the spring) try not to remove the timing belt or be ready to re-time it. you will see the crankshaft sensor down at the bottom behind the underdrive pulley. Its just two 10mm bolts that are not very easy to remove (be prepared to drop one and retrieve it). Unscrew the bolts and re-assemble everything (the hardest thing for me was tightining the timing pulley) This is the easiest way to do it short of pulling the motor completely out and removing the underdrive pulley which would require re-timing and special tools. I hope this helps.

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1 Answer

Ifailed to get on tdc before removing old timing belt how do I get back in time so Icanreplacebelt.


This is the complete procedure from the service manual on how to replace the timing belt start to finish, start over to assure u get it right, if u mess up the engine will be damaged

Removal for 1.6L engines : ONLY 2006 to 2009 CARS


Engine removal is not required for this procedure.

1.Remove the engine cover.

2.Remove the RH front wheel.

3.Remove the 2 bolts and RH side cover.

4.Temporarily loosen the water pump pulley bolts.

5.Remove the alternator drive belt

6.Remove the air conditioner compressor drive belt

7.Remove the power steering pump drive belt

8.Remove the 4 bolts and water pump pulley.

9.Remove the 4 bolts and
timing belt2_bing.gif upper cover

10.Turn the crankshaft pulley, and align its groove with timing mark "T" of the timing belt cover. Check that the timing mark of camshaft sprocket is aligned with the timing mark of cylinder head cover. (No.1 cylinder compression TDC position)

11.Remove the crankshaft pulley bolt and crankshaft pulley

12.Remove the crankshaft flange

13.Remove the 4 bolts and timing belt lower cover

14.Remove the timing belt tensioner and timing belt.

15.Remove the bolt and timing belt idler

16.Remove the crankshaft sprocket

17.Remove the cylinder head cover.

(1)Remove the wire harness bracket

(2)Remove the ignition coil.

(3)Remove the PCV (Positive Crankcase Ventilation) hose and the breather hose from the cylinder head cover

(4)Remove the engine cover bracket

(5)Loosen the cylinder head cover bolts and then remove the cover and gasket.

18.Remove the camshaft sprocket.

Hold the portion of the camshaft with a hexagonal wrench, and remove the bolt with a wrench and remove the camshaft sprocket.

INSTALLATION:

1.Install the camshaft sprocket and tighten the bolt to the specified torque.

(1)Temporarily install the camshaft sprocket bolt

(2)Hold the portion of the camshaft with a hexagonal wrench, and tighten the bolt with a wrench
Tightening torque :78.5 ~ 98.1N.m (8.0 ~ 10.0kgf.m, 57.9 ~ 72.3lb-ft)



2.Install the cylinder head cover.

(1)Install the cylinder head cover and bolts
Tightening torque :7.8 ~ 9.8N.m (0.8 ~ 1.0kgf.m, 5.8 ~ 7.2lb-ft)

(2)Install the engine cover bracket

(3)Install the PCV(Positive Crankcase Ventilation) hose and breather hose to the cylinder head cover.

(4)Install the ignition coil.

3.Install the crankshaft sprocket

4.Align the timing marks of the camshaft sprocket and crankshaft sprocket with the No.1 piston placed at top dead center and its compression stroke.

5.Install the idler pulley and tighten the bolt to the specified torque.

Tightening torque :42.2 ~ 53.9N.m (4.3 ~ 5.5kgf.m, 31.1 ~ 39.8lb-ft)

6.Temporarily install the timing belt tensioner

7.Install the belt so as not give slack at each center of shaft. Use the following order when installing timing belt.
Crankshaft sprocket →idler pulley →camshaft sprocket →timing belt tensioner

8.Adjust the timing belt tension.

(1)Loosen the tensioner pulley mounting bolt and apply tension to the timing belt.

(2)After checking the alignment between each sprocket and each timing belt tooth, tighten the mounting bolt and one by one.

Tightening torque :19.6 ~ 26.5N.m (2.0 ~ 2.7kgf.m, 14.5 ~ 19.5lb-ft)

(3)Then recheck the belt tension.
Verify that when the tensioner and the tension side of the timing belt are pushed in horizontally with a moderate force [approx. 49N (11lb)], the timing belt cog end is aprox. 1/2 of the tensioner mounting bolt head radius (across flats) away from the bolt head center.

4)Timing belt tension measuring procedure
(by a sonic tension guage)
Rotate crankshaft in clockwise direction to set 1st piston on top dead center (TDC) and rotate crankshaft in counterclockwise to 90° then measure the belt tension in the middle of tension side span (in arrow direction of above illustration) by free vibration method.


9.Turn the crankshaft two turns in the operating direction (clockwise) and realign crankshaft sprocket and camshaft sprocket timing mark.


10.Install the timing belt lower cover with 5bolts

Tightening torque :7.8 ~ 9.8N.m (0.8 ~ 1.0kgf.m, 5.8 ~ 7.2lb-ft)

11.Install the flange and crankshaft pulley, and then tighten crankshaft pulley bolt. Make sure that crankshaft sprocket pin fits the small hole in the pulley.

Tightening torque :137.3 ~ 147.1N.m (14.0 ~ 15.0kgf.m, 101.3 ~ 108.5lb-ft)

12.Install the timing belt upper cover with 4 bolts.

Tightening torque :7.8 ~ 9.8N.m (0.8 ~ 1.0kgf.m, 5.8 ~ 7.2lb-ft)

13.Install the water pump pulley and 4 bolts.

14.Install the power steering pump drive belt

15.Install the air conditioner compressor drive belt

16.Install the alternator drive belt

17.Install the RH side cover with 2 bolts

18.Install the RH front wheel.


Tightening torque :88.3 ~ 98.1N.m (9.0 ~ 10.0kgf.m, 65.1 ~ 72.3lb-ft)

19.Install the engine cover with bolts.


Tightening torque :3.9 ~ 5.9N.m (0.4 ~ 0.6kgf.m, 2.9 ~ 4.3lb-ft)

May 20, 2010 | 2006 Kia Sorento

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