Question about 1994 Toyota Corolla

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Engine knocks and high oil consumption ,Toyota Hilux 3L Engine.

I had an engine reworked, changed out a used 3L engine block for the old block was worn down pass the bore limits.
However, the Bearings were reused but all other items including the rings,Valve Stem Seals, Gaskets etc,were replaced.
After a month of running the Vehicle, the oil consumption increased and eventually the mechanical knocking sound become obviously loud.
I intend to have another work on the engine,however what are some tips to solve the current problem?

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You have to change every thing. eveng the crank shaft must be done or pulished

Posted on Jan 21, 2013

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Next time replace the bearings all ways do that..... now you may have damaged your crankshaft. every mechanic nows to do that
if they dont they want more money

Posted on Nov 30, 2008

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I changed my engine block and replaced the rings and bearings but the car is smoking and using oil


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How to overhaual engine 4bc2??


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Replacing crankshaft pulley/balancer assy procedure. 1994 Merc Topaz 2.3 4cyl.


Crankshaft and Main Bearings REMOVAL & INSTALLATION NOTE: When draining coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old. CAUTION
The EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer! You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing the oil. Wash your and and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner should be used. 2.3L Engine
  1. Disconnect the negative battery cable.
  2. Drain the cooling system and engine crankcase.
  3. Remove the engine from the vehicle.
  4. Remove the crankshaft front pulley, front cover, timing chain and sprockets, cylinder head, oil pan, oil pump and intermediate driveshaft.
  5. Remove the rear oil seal cover bolts and remove the cover.
  6. Remove the piston assemblies. NOTE: Mark the connecting rods and bearing caps so they can be installed in the proper cylinders.
  7. Remove the main bearing caps and bearing.
  8. Carefully lift the crankshaft out of the crankcase, so No. 3 thrust bearing surfaces are not damaged.
  9. Remove the main bearing inserts from the engine block and bearing caps. NOTE: For cleaning purposes, the oil gallery and coolant drain plugs can be removed. To install:
  10. Wash the cylinder block thoroughly to remove all foreign material and dry before assembling other components. Check to ensure all oil holes are fully open and clean. Check to ensure the bearing inserts and bearing bores are clean. Clean the mating surfaces of the crankcase and each main bearing cap.
  11. Install the main bearings in the cylinder block. Note that the center front bearing is a thrust bearing and the front upper bearing has a small "V'' notch on the parting line face.
  12. Lubricate the bearings with clean engine oil.
  13. Carefully lower the crankshaft into place. Be careful not to damage the bearing surfaces.
  14. Check the clearance of each main bearing as outlined in this section.
  15. After the bearing has been fitted, apply a light coat of engine oil to the journal and bearings. Install the bearing cap in their original locations . (refer to numbers on caps). The caps must be installed with the arrows pointing to ward the front of the engine. Oil the bolts and tighten to specifications. Repeat the procedure for the remaining bearings. NOTE: Turn the crankshaft to check for turning torque. The turning torque should not exceed 4.5 ft. lbs. (6 Nm).
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  21. Install the rear crankshaft seal and cover. Tighten the bolts to 5–7 ft. lbs. (7–10 Nm).
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1 Answer

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