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Engine will not rotate a full 360 degrees, 1995 Toyota Celica

Engine will only rotate about 170 degrees either side of TDC. I am getting a thud sound at stop (nothing metallic). I have removed the valve cover and checked for interference, timing is dead on, and I even ran a bore scopre in each cylinder looking for any objects in the cylinders...none. I also removed the transaxel and flywheel. The engine still will not rotate a full 360. Any advice would be greatly appreciated.

Posted by Anonymous on

1 Answer

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  • Cars & Trucks Master
  • 75,066 Answers

You have a valve hitting one or more pistons, and it is not a metallic noise it just stops rotating.

Posted on Jul 19, 2017

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: no compression in one cylinder

Timing belt slipped around cam pulley. Take off your timing belt cover and check the position. This would explain misfiring and compression loss. Stretched belt or missing cogs in belt likely culprit.

Posted on Feb 04, 2009

emissionwiz
  • 75066 Answers

SOURCE: interference engine

all of the engines used in the hyundai's are interference engine's, that does not mean for sure u have bent valves but the chances are u did. source of info Gates timing belt Catalog.

Posted on Mar 20, 2009

duane_wong
  • 6826 Answers

SOURCE: Cracked Cylinder Head

I'd say moderately difficult: here are the instructions for replacing the head on a 2001 Jeep Cherokee Sport with 4.0 L engine:

REMOVAL & INSTALLATION 4.0L Engines

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Drain the cooling system.
  3. Remove or disconnect the following:
    • Negative battery cable
    • Crankcase Ventilation (CCV) hoses
    • Air cleaner assembly
    • Accelerator cable
    • Cruise control cable, if equipped
    • Transmission cable, if equipped
    • Control cable bracket
    • Valve cover
    NOTE: Keep valvetrain components in order for reassembly.
    • Rocker arms
    • Pushrods
    • Accessory drive belt
    • A/C compressor and bracket, if equipped
    • Power steering pump and bracket, if equipped
    • Fuel line
    • Combination manifold
    • Thermostat housing coolant hoses
    • Spark plugs
    • Engine Coolant Temperature (ECT) sensor connector
    • Cylinder head
    To install: WARNING
    Cylinder head bolts may only be reused one time. If reusing a cylinder head bolt, place a paint mark on the bolt after installation. If a cylinder head bolt has a paint mark, discard it and use a new bolt. NOTE: Refer to Section 1 of this manual for the cylinder head torque sequence illustration. The illustration is located after the Torque Specification Chart.
  4. Install the cylinder head with a new gasket. Coat the threads of bolt No. 11 with Loctite® F 592 sealant. CAUTION
    During the final tightening sequence, bolt No. 11 will be tightened to a lower torque value than the rest of the bolts. Do not overtighten bolt No. 11.
  5. Tighten the cylinder head bolts, in sequence, as follows:
    1. Step 1: 22 ft. lbs. (30 Nm)
    2. Step 2: 45 ft. lbs. (61 Nm)
    3. Step 3: 45 ft. lbs. (61 Nm)
    4. Step 4: Bolts 1–10 to 110 ft. lbs. (149 Nm)
    5. Step 5: Bolt 11 to 100 ft. lbs. (136 Nm)
    6. Step 6: Bolts 12–14 to 110 ft. lbs. (149 Nm)
    7. Step 7: Repeat steps 4, 5 and 6
  6. Install or connect the following:
    • ECT sensor connector
    • Spark plugs
    • Thermostat housing coolant hoses
    • Combination manifold
    • Fuel line
    • Power steering pump and bracket, if equipped
    • A/C compressor and bracket, if equipped
    • Accessory drive belt
    • Pushrods and rocker arms in their original positions
    • Valve cover
    • Control cable bracket
    • Transmission cable, if equipped
    • Cruise control cable, if equipped
    • Accelerator cable
    • Air cleaner assembly
    • CCV hoses
    • Negative battery cable
  7. Fill the cooling system.
  8. Start the engine and check for leaks.

Posted on Jul 19, 2010

  • 135 Answers

SOURCE: 1999 Toyota Camry, 4 cylinder. engine

REPLACE THE EGR VALVE ASSEMBLY !

Posted on Aug 06, 2010

  • 834 Answers

SOURCE: Rebuilt my 454 engine, installed distributor with

The ignition timing is not adjusted with a timing light or with the engine running, and to set the ignition timing follow these procedures.

There is a mark or notch on the distributor housing that the rotor should be pointing to when the engine is on TDC. (Top Dead Center) This "Static" timing is all that matters and the computer will be able to control the timing as long as the ignition rotor is in that position when the engine is at TDC.

1. Place the engine at top dead center.

2. Look under the distributor cap and find where the number one terminal runs under the distributor cap, and where that position on the distributor cap corresponds with the distributor housing, and it should match up to a mark or a notch on the distributor housing (usually has a #6 for 6 cylinder engines or a #8 for 8 cylinder engines) indicating the number one TDC alignment position.

3. With the engine on top dead center the ignition rotor should be pointing to the number one TDC alignment mark or notch that is on the distributor housing, if it is not then loosen up the distributor and turn the distributor until the ignition rotor is pointing to and aligned with the TDC alignment mark or notch on the distributor housing and then tighten down the distributor, the engine should now be "Static" timed. (The more precise that you are aligning the TDC alignment mark with the ignition rotor the better the engine will run, and it will be less likely that there will be a camshaft to crankshaft correlation problem)

If the distributor can not be turned enough to align the ignition rotor with the number one TDC alignment mark on the distributor housing, or the distributor does not set properly and will not allow the installation of the spark plug wires then the distributor is not installed correctly and is most likely a tooth off and it will need to be re-installed correctly. (The distributor should set like it is shown in the firing order diagram when it is properly installed)

Here is a firing order diagram to also help assist you.




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Posted on Oct 25, 2010

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Horrible engine knock in 1995 toyota celica


Check for oil pressure.Check the compression in each cylinder.
Yank the valve cover to see if the camshaft is actually turning during cranking mode,only.
Disable the fuel pump or disable the spark(fuel disable preferred)
The engine may have "eaten" something it shouldn't.
A valve may be broken off inside the cylinder head.
Usually an exhaust valve.

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well hold on there cowboy, first consult your service manual if your cars engine is an interference type. it means that if ever your timing belt breaks the valves that were stranded shall be hammered by up moving piston. eventually bending and warping of some of the valves would be a result. sometimes a damaged piston could also happen. timing belt breakage is a very serious matter and should not be taken likely. if you do not have a manual, what i do is removing the whole cyclinder head and inspect it. its better to be sure than sorry. in other cases you could see the warped valves by turning the crankshaft from tdc to 90 deg. and after which try turning the camshaft all the way around and carefully feeling the ease or difficulty in turning it and also the lift and rest of the rocker arms. any deviations you from the standard filler guage clearances would mean a bent or broken valves. hope this helps.

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1 Answer

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