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1. Drain the coolant and disconnect the upper radiator hose. 2. Remove the breather hose (between the air cleaner and the head cover). 3. Remove the air-intake hose. 4. Remove the vacuum hose, fuel hose and coolant hose. 5. Remove the cables from the spark plugs. The cables should be removed by holding the boot portion. 6. Remove the ignition coil. 7. Remove the power steering oil pump and bracket. 8. Remove the intake manifold. 9. Remove the heat protector and exhaust manifold assembly. 10. Remove the coolant pump pulley and the crankshaft pulley. 11. Remove the timing belt cover. 12. Remove the timing belt tensioner pulley. 13. Remove the timing belt. 14. Remove the head cover.
15. Remove the cylinder head assembly. The cylinder head bolts should be removed by using Special Tool, Cylinder Head Bolt Wrench (09221-32001) or equivalent, in the sequence as shown in the illustration in two or three steps. 16. Remove the gasket pieces from the cylinder block top surface and cylinder head bottom surface. NOTE: Make sure that the gasket pieces do not fall in the engine.
INSTALLATION
1. Clean all gasket surfaces of the cylinder block and the cylinder head. 2. Install a new cylinder head gasket onto the cylinder head assembly. Apply sealant to the gasket and do not reuse the old cylinder head gasket.
3. Install the cylinder head bolts. Starting at top center, tighten all cylinder head bolts in sequence as shown in illustration, using the Cylinder Head Bolt Wrench (09221 - 32001) or equivalent. Repeat the procedure, re-tightening all cylinder head bolt to the specified torque. (torque spec is Cold Engine 105-115 Nm (76-83 ft lb) ) 4. Install the timing belt tensioner pulley. 5. Install the timing belt on the camshaft sprocket, making sure that the tension side is tightened by turning the camshaft sprocket in reverse, all timing marks are in alignment. 6. Adjust the timing according to "Timing Belt" 7. Install the rocker cover and tighten the bolts to the specified torque. Tightening torque: Rocker cover belt:
2.5-3.5 Nm (25-35 kg.cm, 2-3 ft. lbs.)
8. Install the timing belt cover. 9. Install the new intake manifold gasket and the intake manifold. Tighten the nuts and bolts to the specified torque. 10. Install the new exhaust manifold gasket and the exhaust manifold. Tighten the exhaust manifold attaching nuts to the specified torque. 11. Install the surge tank and tighten the nuts bolts to the specified torque. 12. Install the power steering oil pump and bracket. 13. Install the ignition coil. 14. Install the air intake hose. 15. Connect the vacuum hose, fuel hose and water hose. 16. Install breather hose.
first of all with 3 cylinders 25lbs -1 100lbs. you have a problem with the vavles i think you have some bent vavles thats why low compression on 3 cylinders. check rockers or lifters but thats where it is foresure.
CAUTION
Never open, service or drain the radiator or cooling system when
hot; serious burns can occur from the steam and hot coolant.
Drain the engine cooling system.
Raise and safely support the vehicle.
Remove the lower radiator hose from the water pump.
If the lower radiator hose is hard to reach on the back of the water
pump, remove the hose at the radiator and after the water pump is ready
to be removed, pull the water pump away from the engine block until
there is enough room to remove the hose from the pump.
Lower the vehicle.
Remove the accessory drive belt.
Remove the timing belt covers and the timing belt as outlined in
this Section.
Remove the four water pump retaining bolts.
Remove the water pump.
To install:
Thoroughly clean all sealing surfaces.
Install a new water pump gasket and the water pump onto the
cylinder block.
Tighten the retaining bolts to 12-15 ft. lbs. (16-20 Nm).
Reinstall the timing belt and the timing belt covers as outlined
in this Section.
Reinstall the accessory drive belt.
Raise and safely support the vehicle.
Reinstall the lower radiator hose.
Lower the vehicle.
Fill the engine cooling system.
Reconnect the negative battery cable.
Start the engine and top off the coolant as necessary. Check for
leaks.
2.5L Engine
Before continuing with this procedure, be sure three new water pump
retaining bolts (W701544) are available. Due to their torque-to-yield
design, the bolts stretch and cannot be reused.
Disconnect the negative battery cable.
CAUTION
Never open, service or drain the radiator or cooling system when
hot; serious burns can occur from the steam and hot coolant.
Drain the engine cooling system.
Remove the water pump pulley shield.
Remove the water pump drive belt.
Remove the water pump inlet and outlet hoses from the water pump.
Remove the three water pump to left cylinder head retaining bolts.
Remove the water pump and water pump housing from the vehicle.
Remove the water pump to water pump housing retaining bolts and
separate the water pump from the water pump housing.
To install:
Thoroughly clean all sealing surfaces.
Install the water pump to the water pump housing using a new
gasket and install the retaining bolts. Tighten the retaining bolts to
16-18 ft. lbs. (22-25 Nm).
Position the water pump and water pump housing and install three
new torque-to-yield retaining bolts into the left cylinder head.
Tighten the new retaining bolts to 11-13 ft. lbs. (15-18 Nm), then
rotate the retaining bolts 85-95 degrees.
Reinstall the water pump inlet and outlet hoses to the water pump.
Reinstall the water pump drive belt.
Reinstall the water pump shield.
Fill the engine cooling system.
Reconnect the negative battery cable.
Start the engine and top off the coolant as necessary. Check for
leaks.
The cylinder head should be cleaned and inspected prior to installation.
Lightly oil all bolt and stud bolt threads before installation.
Clean all gasket mating surfaces thoroughly.
Install a new head gasket on the cylinder block. WARNING Always use new cylinder head bolts when installing the cylinder head or damage to the engine may occur.
Install the cylinder head on the cylinder block.
Tighten the cylinder head bolts in reverse of the removal sequence. Tighten the 2004 cylinder head bolts to 18 ft. lbs. (25 Nm). Tighten an additional 70°, plus 70°, plus another 50°. Tighten 2005 bolts to 18 ft. lbs. (25 Nm). Tighten an additional 60°, plus 60°, plus another 10°.
Install the right engine mount. Tighten the engine mount attaching bolts to 22 ft. lbs. (30 Nm).
Install or connect the following:
Intake manifold
Intake manifold support bracket. Tighten the bolts to 18 ft. lbs. (25 Nm).
Throttle cable
Surge tank coolant hose
Heater hose to cylinder head
Fuel feed line at the fuel rail
All vacuum hoses
Exhaust manifold
Rear timing belt cover
Timing belt tensioner. Tighten the bolts to 18 ft. lbs. (25 Nm).
Idler pulley. Tighten the bolts to 18 ft. lbs. (25 Nm).
Intake and exhaust camshaft gears. Tighten the bolts to 49 ft. lbs. (68 Nm).
Apply a small amount of gasket sealant to the corners of the front camshaft caps and the top of the rear camshaft cover-to-cylinder head seal.
Install the valve cover using a new gasket
Align the timing marks on the camshaft gears.
Align the mark on the crankshaft gear with the notch at the bottom of the rear timing belt cover.
Install the timing belt and rotate the water pump clockwise to apply tension to the timing belt.
Tighten the water pump bolts to 89 inch lbs. (10 Nm).
Adjust the timing belt tension.
Install or connect the following:
Spark plug wires
Upper and lower timing belt coversCrankshaft pulley. Tighten the bolt to 70 ft. lbs. (95 Nm), plus an additional 30°, then another 15°.
This is the same for many years. I will send this in 2 post it is to long.
Hope this helps you.
From the '00 Rodeo workshop manual:
Cylinder Head Assembly Removal 1. Disconnect battery ground cable. 2. Disconnect connector of intake air temperature sensor from intake air duct. 3. Remove PCV hose from air intake duct. 4. Remove nut from air intake duct bracket and loosen hose clamp on throttle body. Remove air intake duct assembly with air cleaner cover. 5. Remove intake air duct bracket from cylinder head. 6. Drain engine coolant. 7. Move drive belt tensioner to loose side using wrench then remove drive belt. 033RW001 8. Remove radiator upper hose from engine side. 9. Remove four nuts of exhaust front pipe. 10. Remove three bolts from generator bracket then remove the generator with brackets. 065RW025 11. Disconnect crankshaft angle sensor connector. 12. Disconnect knock sensor connector. 13. Remove heater hose from adapter side. 14. Remove heater hose from water pipe side. 15. Remove water hose between water pipe and throttle body. 16. Remove fuel pipe joint eye bolts from fuel rail assembly and remove fuel pipe bracket with electric ground cable. 042RW001 17. Disconnect connector for evaporation valve. 18. Remove canister hose. 19. Remove fixing nut of intake manifold stay from cylinder block side. 025RW002 20. Remove two bolts from intake manifold for water pipe support and remove cylinder head assembly. 21. Remove engine harness cover and disconnect three connectors from chassis harness on left rear side engine compartment. 22. Disconnect connector for power steering pump pressure switch. 23. Remove four bolts and remove crankshaft pulley. ENGINE MECHANICAL (X22SE 2.2L) 6A–23 020RW014 24. Remove two bolts and nut then remove timing belt front cover. 25. Remove ventilation hose from cylinder block side and from cylinder head side. 26. Remove two bolts, ignition cable cover and remove ignition cables from spark plug. 27. Disconnect camshaft angle sensor connector. 28. Remove ten bolts and remove cylinder head cover. 29. Remove fixing bolt of timing belt tensioner then remove timing belt tensioner. 020RW010 30. Remove timing belt. CAUTION: Do not bend or twist belt, otherwise its core could be damaged. The belt should not be bent at a radius less than 30 mm. Timing belt drive gear counterhold with J–42620. Do not allow oil or other chemical substances to come in contact with the belt. They will shorten the life. Do not attempt to pry or stretch the belt with a screw driver or any other tool during installation. Store timing belt in cool and dark place. Never expose the belt direct sunlight or heat. 31. Remove two idle pulleys, the left side with idle pulley bracket. 32. Remove two bolts and stud bolt and remove timing belt rear cover. 33. Remove camshaft angle sensor 34. Disconnect engine oil pressure switch connector. 050RW005 35. Remove camshaft assembly exhaust side. 36. Use J–42623 to remove ten cylinder head fixing bolts 012RW007 6A–24 ENGINE MECHANICAL (X22SE 2.2L) Installation 1. Put cylinder head gasket on the cylinder block. 012RW011 2. Install the cylinder head assembly, tighten cylinder head bolts by four steps tightening method in the following sequence to the specified torque.(use J–42623) Torque: 25 N·m (18 lb ft) + 90 + 90 + 90 012RW006 3. Install camshaft assembly exhaust side and tighten camshaft bracket bolts in the sequence to the specified torque. Torque: 8 N·m (5.9 lb ft) 015RW014 4. Connect engine oil pressure switch connector. 5. Install camshaft angle sensor. 6. Install the timing belt rear cover and tighten three bolts to the specified torque. Torque M6 bolt: 6 N·m (4.4 lb ft) M8 bolt: 8 N·m (5.8 lb ft) 020RW012 7. Install left side idle pulley with idle pulley bracket, tighten to the specified torque and install right side idle pulley and tighten to the specified torque. Torque: 25 N·m (18 lb ft) ENGINE MECHANICAL (X22SE 2.2L) 6A–25 020RW016
Have you installed a new timing belt? If yes then you must do a compression test on each cylinder to verify no piston/valve damage. Your motor is not a freewheeling one. Damage is most likely to occur if your belt has failed.
sounds like your timing belt may have slipped or snapped a ceased timing belt adjuster could cause this check your timing belt and adjuster and all belt adjustment pulleys before you fix the valves otherwise its bound to happen againalso make sure your engine oil is full
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