Is there a way to check the timing chain without removing the cover ( this is quite a job) for a look at the timing marks

You should Not need to remove the valve cover as there are not normally timing marks on that area of the engine.
I think on these newer Toyota engines they use a chain not a belt. Most chain engine timing marks can be checked by taking off the end cover plates at the pulley end of the engine.

h25 engine? h27, same. this engine, not the J20 right?
just a chain job, but not cams removed or head removed, be clear on JOB, what was removed, matters.

you only need TDC #1 firing and the marks,
firing order is the cams job, (and pcm) only marks matter....!! for a chain job.

here are fsm words (why not login to mitchell's and read)
WARNING(new head)
Wait1/2hour after installing the lash adjusters and camshafts before cranking or starting the engine to allow the lash adjusters to bleed down. Operating the engine before this time period may result in interference between the valves and pistons.


the real Fsm covers this in pages 345 to 368
need that?
here read the manual all steps, skip none and win.
23pages , my guess to late.


http://jeepdied.com/look/24hr/SQ416-h25-h27-chain%20steps.pdf

Everything blocking the timing chain cover needs to be removed. THEN REMOVE COVER AND REMOVE OLD CHAIN making sure your cam and crank marks align. install new chain

Hi Sarah, It would seem to me that either the tensioner or a bolt has come loose on the timing assembly. Unfortunately if something like that happens and the chain jumps, the valves would loose synchronization with the crankshaft and pistons, meaning there could have been collision between them, thereby causing damage to the valves and possibly to the pistons. To solve the problem will mean dismantling and checking the timing mark alignment against the relevant match marks. I am suspecting that you will find that they no longer align and will need realignment. (meaning you'll need to do the previous job over) and when completed carry out a compression test. If after assembly and carrying out that test the compression is very low, the valves will probably have been bent. You will need to remove the cylinder head and carry out rehabilitation. Unfortunately the only way to inspect piston, con-rod and crankshaft damage is a complete dismantling. Regards John

Removal & Installation

3.5L Engine

1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
2. Record the radio anti theft code data.
3. Remove or disconnect the following:
   
   Negative battery cable Engine cover Accessory drive belts Idler pulley Crankshaft pulley Power steering pump pulley Belt tensioner pulley Upper and lower timing belt covers
   
4. Support the engine with a floor jack and remove the engine mount.
5. Rotate the engine to align the camshaft sprocket timing marks with the cylinder head cover timing marks.
   
   

   Fig. Timing belt routing and timing marks-3.5L Engine
   

6. Remove or disconnect the following:
   
   Auto tensioner Timing belt
   
   

   Fig. Timing belt and related components-3.5L Engine
   
   

To install:

1. Ensure that the engine is set to Top Dead Center (TDC).
2. Prepare the auto tensioner for installation by compressing it in a vise and installing a retaining pin.
3. Install the timing belt in the following order:
   1. Crankshaft sprocket
   2. Idler pulley
   3. Left bank exhaust camshaft sprocket
   4. Left bank intake camshaft sprocket
   5. Water pump pulley
   6. Right bank intake camshaft sprocket
   7. Right bank exhaust camshaft sprocket
   8. Tensioner pulley
   
   
4. Install the auto tensioner. Do not remove the retaining pin at this time.
5. Check that the crankshaft and camshaft timing marks are aligned correctly.
6. Rotate the crankshaft 1 / 4 turn Counterclockwise .
7. Rotate the crankshaft 1 / 4 turn Clockwise to return the engine to TDC.
8. Loosen the tensioner pulley center bolt.
9. Apply 44 inch lbs. (5 Nm) torque to the tensioner pulley as shown and tighten the center bolt to 32-41 ft. lbs. (43-55 Nm).
   
   

   Fig. Adjusting the tensioner pulley-3.5L Engine
   

10. Remove the auto tensioner retaining pin.
11. Rotate the crankshaft 2 revolutions Clockwise , then wait 5 minutes for the auto tensioner to adjust.
12. Measure the auto tensioner rod as shown. If the measurement is not 3.8-4.5 mm, then repeat the belt tensioning procedure.
    
    

    Fig. Measuring the auto tensioner rod-3.5L Engine
    

13. When the auto tensioner measurement is correct, install or connect the following:
    
    Engine mount Upper and lower timing belt covers Belt tensioner pulley Power steering pump pulley Crankshaft pulley Idler pulley Accessory drive belts Engine cover Negative battery cable
    
14. Reprogram the radio anti theft codes.

    Kia_Sedona_2002-2006
    Timing Chain, Sprockets, Front Cover & Seal

    • REMOVAL & INSTALLATION

    Print
    

    
    Removal & Installation
    
    3.8L Engine
    

    1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
    2. Record the radio anti theft code data.
    3. Remove the engine from the vehicle.
    4. Remove the drive belt. Remove the power steering pump. Remove the air conditioning compressor.
    5. Remove the alternator. Remove the drive belt idler. Remove the drive belt tensioner. Remove the water pump pulley. Remove the intake manifold.
    6. Remove the connector bracket from the left cylinder head cover. Disconnect the right ignition coil connector, condenser connector and remove the bracket.
    7. Remove the left cylinder head cover retaining bolts. Remove the cylinder head cover from the engine.
    8. Remove the right cylinder head cover retaining bolts. Remove the cylinder head cover from the engine.
    9. Set the No. 1 cylinder to TDC on the compression stroke. Turn the crankshaft pulley and align its groove with the timing mark T of the lower timing chain cover.
    10. Check that the mark of the camshaft timing sprockets are in straight line positioning on the cylinder head surface. If not rotate the crankshaft 360 degrees. Do not rotate the engine counterclockwise.
    11. Remove the oil pan. Remove the crankshaft damper pulley. Remove the timing chain cover.
        NOTE Be careful not to damage the contact surfaces of the cylinder block, cylinder head and timing chain cover. Before removing the timing chain, mark the right and left timing chains with an identification mark based on the location of the sprocket because the identification mark on the chain for TDC can be erased.
        
    12. After compressing the timing chain tensioner, install a set pin. Remove the right cam to cam guide. Remove the right timing chain auto tensioner and timing chain tensioner arm.
    13. Remove the oil pump chain cover. Remove the oil pump chain tensioner assembly. Remove the oil pump chain guide. Remove the right timing chain.
    14. Remove the right timing chain guide. Remove the oil pump chain sprocket and oil pump chain. Remove the crankshaft sprocket, oil pump and camshaft drive gear.
    15. Remove the left cam to cam guide. Remove the left timing chain auto tensioner and timing chain tensioner arm. Remove the left timing chain.
    16. Remove the left timing chain guide. Remove the crankshaft sprocket and left camshaft drive. Remove the tensioner adapter assembly.
        
        

        Fig. Timing chain and related components-3.8L Engine
        

    
    To install:
    
    1. Check the camshaft and crankshaft sprockets for wear and damage, replace as required.
    2. Inspect the tensioner arm and chain guide for wear and damage, replace as required.
    3. Check that the tensioner pin moves smoothly when the ratchet pawl is released with a thin rod.
    4. The key of the crankshaft should be aligned with the timing mark of the timing chain cover. This indicates that the piston is at TDC on the compression stroke.
    5. Install the tensioner adapter assembly. Install the crankshaft sprocket and left camshaft drive.
    6. Install the left timing chain guide and torque the retaining bolts 14-18 ft. lbs.
    7. Install the left timing chain. Be sure to install the chain with no slack between the camshaft and the crankshaft (crankshaft sprocket, timing chain guide, exhaust camshaft sprocket, intake camshaft sprocket). The timing mark of each sprocket should be matched with the timing mark (color ink) of the timing chain at installation of the timing chain.
       
       

       Fig. Left timing chain markings and installation: (D) exhaust camshaft sprocket (C) intake camshaft sprocket-3.8L Engine
       

    8. Install the left timing chain tensioner arm and torque the retaining bolts 14-16 ft. lbs.
    9. Install the left timing chain tensioner and torque the retaining bolts 7-9 ft. lbs.
    10. Install the left cam to cam guide and torque the retaining bolts 7-9 ft. lbs.
    11. Install the crankshaft sprocket, oil pump and right camshaft drive.
    12. Install the oil pump chain and oil pump sprocket. Torque the retaining bolt to 14-16 ft. lbs.
    13. Install the right timing chain guide. Torque the retaining bolts to 14-18 ft. lbs.
    14. Install the right timing chain. Be sure to install the chain with no slack between the camshaft and the crankshaft (crankshaft sprocket, intake camshaft sprocket, exhaust camshaft sprocket). The timing mark of each sprocket should be matched with the timing mark (color ink) of the timing chain at installation of the timing chain.
        
        

        Fig. Right timing chain markings and installation: (C) exhaust camshaft sprocket (B) intake camshaft sprocket-3.8L Engine
        

    15. Install the right timing chain tensioner arm. Torque the retaining bolts to 14-17 ft. lbs.
    16. Install the right timing chain auto tensioner. Torque the retaining bolts to 7-9 ft. lbs.
    17. Install the right cam to cam guide and torque the retaining bolts to 7-9 ft. lbs.
    18. Install the oil pump chain guide. Torque the retaining bolts to 7-9 ft. lbs.
    19. Install the oil pump tensioner assembly. Torque the retaining bolts to 7-9 ft. lbs.
    20. Pull out the pins on both the left and right hydraulic tensioners. Install the oil pump chain cover.
    21. Rotate the crankshaft two revolutions in the clockwise direction. Confirm the timing mark. Be sure to rotate the crankshaft in the clockwise direction.
    22. Apply sealant on the chain cover and on the cylinder head, cylinder block, and lower oil pan. Be sure these parts are free of engine oil and dirt.
        NOTE Before assembling the timing chain cover, the liquid sealant TB1217H should be applied on the gap between the cylinder head and block. The part must be assembled with five minutes after the sealant is applied.
        
        
        

        Fig. Sealant application (1 inch bead width)-3.8L Engine
        

    23. Apply sealant on the chain cover.
        NOTE The liquid sealant TB1217H should be applied on the gap between the cylinder head and block. The part must be assembled with five minutes after the sealant is applied.
        
        
        

        Fig. Timing cover sealant application-3.8L Engine
        

    24. Install a new gasket to the timing case cover.
        NOTE It is important that the dowel pins on the cylinder block and holes on the timing chain cover should be used as a reference in order to assemble the timing chain cover in the correct position.
        
        
        

        Fig. Timing cover gasket installation (A) gaskets-3.8L Engine
        

    25. Install the timing chain cover. Torque the retaining bolts in the proper sequence and to specification. The engine should not be started for at least thirty minutes after timing chain cover assembly.
        
        

        Fig. Timing cover bolt torque sequence and specification-3.8L Engine
        

    26. Install the timing case cover oil seal.
    27. Continue the installation in the reverse order of the removal procedure.

you do nothing
the engine is running so the timing will be correct
there are 2 tdc positions on an engine and it is possible that you got tdc on exhaust stroke which would mean that the marks will not line up
also if you paid to have the job done and it is leaking oil , it is the mechanics job to fix the leak --not yours

check around the inside (towards the block) edge or crank shaft pulley by the lower passenger side of the engine. Otherwise it will be by that pulley on the bloc, those are the only laces I've known them to be. Hope it helps

go here for expert help on Villager & Quest

http://groups.yahoo.com/group/villagerquest/



Item Part Number Description 1 — 40 Timing Chain/Belt Teeth 2 6256 Camshaft Sprocket , Front 3 — 43 Timing Chain/Belt Teeth 4 6306 Crankshaft Sprocket 5 6268 Timing Chain/Belt 6 6256 Camshaft Sprocket , Rear
Removal

1. Drain the cooling system. Refer to Section 03-03 for the procedure.
   

1. Disconnect the battery ground cable (14301) .
   

1. Remove the generator drive belt, water pump and power steering pump drive belt, and the A/C compressor drive belt (if equipped). Refer to Section 03-05 for the removal procedure.
   

1. If equipped, remove the three A/C compressor drive belt idler pulley bolts and the A/C compressor drive belt idler pulley.
   

1. Remove the upper radiator hose bracket bolt.
   

1. Loosen the two upper radiator hose clamps and remove the radiator hose bracket bolt. Remove the upper radiator hose (8260) and the upper radiator hose bracket from the vehicle.
   

1. Remove the water bypass hose (8597) from between the thermostat housing and the water hose connection (8592) .
   

1. Remove the main wiring harness from the upper engine front cover (6019) .
   

1. Remove the eight upper engine front cover bolts and the upper engine front cover .
   

1. Raise and support the vehicle.
   

1. Remove the RH front wheel and tire assembly.
   

1. Remove the four RH outer engine and transmission splash shield bolts and two screws and remove the RH outer engine and transmission splash shield (6775) .
   

1. Use Strap Wrench 303-D055 (D85L-6000-A) or equivalent to hold the water pump pulley (8509) while removing the four water pump pulley bolts.
   

1. Remove the water pump pulley from the water pump (8501) .
   

1. Remove the crankshaft pulley (6312) . Refer to the procedure in this section.
   

1. Remove the five lower engine front cover bolts and the lower engine front cover .
   
2. Ensure that the timing marks between the crankshaft sprocket (6306) and the oil pump housing line up.
   
3. NOTE: The directional arrow is necessary to ensure that the timing chain/belt (6268) can be reinstalled in the same direction.
   
4. Loosen the timing chain/belt tensioner nut.
   
5. Remove the timing chain/belt .
   
   
6. Installation
   NOTE: Ensure that the timing marks on the camshaft sprockets (6256) and the seal plate are properly aligned. Ensure that the timing marks on the crankshaft sprocket and the oil pump housing are still aligned. NOTE: A new timing chain/belt has three white timing marks that indicate the correct timing positions of the camshafts (6250) and the crankshaft (6303) . These marks will help ensure that the engine (6007) is timed properly. When the engine is properly timed each white timing mark on the timing chain/belt will be aligned with the corresponding camshaft and crankshaft timing mark on the sprocket. Because the white timing marks are not evenly spaced you will need to refer to the following illustration for proper timing chain/belt placement. There should be 40 timing belt teeth between the timing marks of the front and rear camshaft sprockets and 43 teeth between the timing mark on the front camshaft sprocket and the timing mark on the crankshaft sprocket .
   
   NOTE: Verify that the camshaft timing marks are aligned with the timing marks on the seal plate, and that the crankshaft sprocket timing mark is aligned with the timing mark on the oil pump (6600) .
   
   Install the timing chain/belt starting at the crankshaft sprocket and moving around to the camshaft sprocket following a counterclockwise path. Do not allow any slack in the timing chain/belt between the timing sprockets. After all of the timing marks are matched up with the timing chain/belt installed, slip the timing chain/belt onto the timing chain/belt tensioner .
   
   
   
   
   
   

This is a job for an experienced technician. Probably about a $300 job. Maybe more.

Here is procedure for 1996:

Removal

1. Drain the cooling system. Refer to Section 03-03 for the procedure.
   

1. Disconnect the battery ground cable (14301).
   

1. Remove the generator drive belt, water pump and power steering pump drive belt, and the A/C compressor drive belt (if equipped). Refer to Section 03-05 for the removal procedure.
   

1. If equipped, remove the three A/C compressor drive belt idler pulley bolts and the A/C compressor drive belt idler pulley.
   

1. Remove the upper radiator hose bracket bolt.
   

1. Loosen the two upper radiator hose clamps and remove the radiator hose bracket bolt. Remove the upper radiator hose (8260) and the upper radiator hose bracket from the vehicle.
   

1. Remove the water bypass hose (8597) from between the thermostat housing and the water hose connection (8592).
   

1. Remove the main wiring harness from the upper engine front cover (6019).
   

1. Remove the eight upper engine front cover bolts and the upper engine front cover.
   

1. Raise and support the vehicle.
   

1. Remove the RH front wheel and tire assembly.
   

1. Remove the four RH outer engine and transmission splash shield bolts and two screws and remove the RH outer engine and transmission splash shield (6775).
   

1. Use Strap Wrench D85L-6000-A or equivalent to hold the water pump pulley (8509) while removing the four water pump pulley bolts.
   

1. Remove the water pump pulley from the water pump (8501).
   

1. Remove the crankshaft pulley (6312). Refer to the procedure in this section.
   

1. Remove the five lower engine front cover bolts and the lower engine front cover.
   
2. Ensure that the timing marks between the crankshaft sprocket (6306) and the oil pump housing line up.
   

18. NOTE: The directional arrow is necessary to ensure that the timing chain/belt (6268) can be reinstalled in the same direction.

If the timing chain/belt is to be reused, mark the direction of rotation on the timing chain/belt.

19. Loosen the timing chain/belt tensioner nut.

1. Remove the timing chain/belt.
   

Installation
NOTE: Ensure that the timing marks on the camshaft sprockets (6256) and the seal plate are properly aligned. Ensure that the timing marks on the crankshaft sprocket and the oil pump housing are still aligned.



CAUTION: Pay special attention to the tooth shape of the timing belt. The current timing belts are not interchangeable with the timing belts from the 1993 model year. The 1993 model year uses a square or trapezoidal tooth timing belt while the current model year uses a rounded tooth design. The design change was made to extend the service life of the timing belt from 60,000 miles for the square or trapezoidal toothed belt to 105,000 miles for the rounded tooth belt. If the proper timing belt is not used, the customer may complain of a "whining" noise coming from the engine compartment. If the camshaft sprocket has a square cut in the valley of the gear tooth, it will require a square or trapezoidal tooth timing belt. If the camshaft sprocket has a rounded cut in the valley of the gear tooth, it will require a rounded tooth timing belt.
NOTE: If a new timing chain/belt is to be installed, make sure that the arrow is pointing away from the engine. If a timing chain/belt is to be reused, make sure that the directional arrow that was marked during disassembly is facing the correct direction.

NOTE: A new timing chain/belt has three white timing marks that indicate the correct timing positions of the camshafts and the crankshaft. These marks will help ensure that the engine (6007) is timed properly. When the engine is properly timed each white timing mark on the timing chain/belt will be aligned with the corresponding camshaft and crankshaft timing mark on the sprocket. Because the white timing marks are not evenly spaced you will need to refer to the following illustration for proper timing chain/belt placement. There should be 40 timing belt teeth between the timing marks of the front and rear camshaft sprockets and 43 teeth between the timing mark on the front camshaft sprocket and the timing mark on the crankshaft sprocket.

NOTE: Verify that the camshaft timing marks are aligned with the timing marks on the seal plate, and that the crankshaft sprocket timing mark is aligned with the timing mark on the oil pump (6600).

Install the timing chain/belt starting at the crankshaft sprocket and moving around to the camshaft sprockets following a counterclockwise path. Do not allow any slack in the timing chain/belt between the timing sprockets. After all of the timing marks are matched up with the timing chain/belt installed, slip the timing chain/belt onto the timing chain/belt tensioner.

1. While holding the timing chain/belt tensioner with an Allen wrench, loosen the timing chain/belt tensioner nut.
   

1. Allow the timing chain/belt tensioner to put pressure on the timing chain/belt.
   

1. Use an Allen wrench to turn the timing chain/belt tensioner 70-80 degrees clockwise and tighten the timing chain/belt tensioner nut to 43-58 Nm (32-43 lb-ft).
   
2. 
   
   1. Rotate the crankshaft (6303) clockwise twice and align the No. 1 piston to Top Dead Center (TDC) on its compression stroke.
      
1. Apply 98N (22 lbs) of force on the timing chain/belt between the rear camshaft sprocket and the timing chain/belt tensioner.
   
2. NOTE: An assistant may be needed to adjust the timing chain/belt.
   
   While holding the timing chain/belt tensioner steady with an Allen wrench, loosen the timing chain/belt tensioner nut. Remove the Allen wrench and adjust the timing chain/belt tensioner as follows:
   
1. Install a 0.35mm (0.0138 inch) thick and 12.7mm (0.500 inch) wide feeler gauge as shown.
   

1. Turn the crankshaft clockwise to position the feeler gauge between the timing chain/belt tensioner and the timing chain/belt

1. Tighten the timing chain/belt tensioner nut to 43-58 Nm (32-43 lb-ft).

1. Turn the crankshaft clockwise to remove the feeler gauge from between the timing chain/belt tensioner and the timing chain/belt.

1. Rotate the crankshaft clockwise twice and align the No. 1 piston to TDC on its compression stroke.
   

1. Apply 98N (22 lbs) of force on the timing chain/belt between the rear and front camshaft sprocket.
   
1. Measure the timing chain/belt deflection. Timing chain/belt deflection should be between 13-15mm (0.51-0.59 inch). If timing chain/belt deflection is not within specification, repeat steps 3-11. If the timing chain/belt cannot be adjusted to within specification, the timing chain/belt will have to be replaced.
   
1. Position the lower engine front cover and install the five lower engine front cover bolts. Tighten the five lower engine front cover bolts to 3-5 Nm (27-44 lb-in).
   
1. Install the outer timing chain/belt guide and the crankshaft pulley. Refer to the procedure in this section.
   
1. Position the water pump pulley on the water pump and install the four water pump pulley bolts
   
1. Use Strap Wrench D85L-6000-A or equivalent to hold the water pump pulley, and tighten the four water pump pulley bolts to 16-21 Nm (12-15 lb-ft).
   
1. Position the RH outer engine and transmission splash shield and install the four RH outer engine and transmission splash shield bolts and two screws.
   
1. Install the RH front wheel and tire assembly. Tighten the lug nuts (1012) to 98-118 Nm (72-87 lb-ft).