Question about 1992 Honda Prelude

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???

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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Instructions: (Click images to Enlarge)

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Disconnect the negative battery cable.
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Install the fan shroud. Torque to 54-70 in-lb (6-8 Nm).
Connect the negative battery cable.
Start the engine. Check for leaks and repair as necessary.

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Remove timing belt, timing belt tensioner, oil pump sprocket, and crankshaft pulley.
Remove inner timing belt cover.

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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 belt 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)