Hi,
Based on your description, it sounds like the blue smoke is the result of faulty valve guide seals. These seals are designed to prevent oil from draining down the valve guide and then burning in the engine. When you turn the engine off, that gives it time to drain and cause this to happen. When it's cold, steel contracts and it could allow more to drain. Also, it is common to see the smoke when the engine is under a heavy load.
I went back to the manuals. I found a technical service bulletin related to this problem from Toyota dated 3/22/1991. Here is the bulletin. You will see that they changed the design of the seal. Take a look.
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1991 Toyota Tercel Sedan 4-Door L4-1456cc 1.5L SOHC (3E-E)
Engine - Oil Leaks Reduced By New Valve Stem Seal
Vehicle Engine, Cooling and Exhaust Engine - Oil Leaks Reduced By New Valve Stem Seal
ENGINE - OIL LEAKS REDUCED BY NEW VALVE STEM SEAL
9225toyota01
REF: ENGINE
NO: EN91-003
DATE: MARCH 22, 1991
MODEL: EL
VALVE STEM OIL SEAL MODIFICATION FOR 3E TERCEL ENGINE
see pic 1
To reduce oil leakage the design of the valve stem oil seal has been changed. New valve stem seals can be identified by their color as shown.
PRODUCTION EFFECTIVE (Reference Only):
From DATE From VIN
April 1990 JT2EL3**L0550207
PART NUMBER INFORMATION:
PREV P/N NEW P/N APPLICATION PART NAME
90913-02071 90913-02089 Intake (Gray-Blue) Seal, Valve Stem Oil
90913-02071 90913-02081 Exhaust (Brown) Seal, Valve Stem Oil
NOTE:
Previous and new parts are interchangeable.
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If you look at pic 2, it shows where this seal is located.
Is it possible for you to record the ticking you hear and upload it for me to hear? Chances are the valves need adjustment. Here are the directions for that. The remaining pics correlate with these directions.
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1991 Toyota Tercel Sedan 4-Door L4-1456cc 1.5L SOHC (3E-E)
Adjustments
Vehicle Powertrain Management Tune-up and Engine Performance Checks Valve Clearance Adjustments
ADJUSTMENTS
1. Warm engine to normal operating temperature.
2. Stop engine. Remove spark plugs and valve cover.
Pic 3
3. Turn the crank pulley and line up it's groove with the "0" mark on the No.1 timing belt cover as shown.
4. Check that the No.1 cylinder rocker arms are loose and No.4 cylinder rocker arms are tight. If not, turn the crank one complete revolution and line up the marks again as above.
Pic 4
5. Measure only the valves shown above.
Pic 5
6. Using a feeler gauge, measure the gap between the cam and rocker arm.
7. Loosen the lock nut and turn the adjusting screw to set clearance.
Clearance:
Hot: 0.20 mm (0.008 in.)
Cold: 0.18 mm (0.007 in.)
Hold the adjusting screw in position and tighten the lock nut.
8. Recheck clearance, feeler gauge should move with a very slight drag.
Pic 6
9. Turn crank one full revolution and adjust remaining valves.
10. Install spark plugs. Torque to 18 Nm (13 ft. Lbs).
Pic 7
11. Apply seal packing No. 08826-00080 or equivalent to the cylinder head as shown above and install valve cover as soon as possible.
Pic 8
12. Install the 2 nuts with new seal washers and torque to 6.9 Nm (61 in. Lbs).
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As far as the oil usage, what you described is certainly excessive. It's likely that it is a combination of the leak and burning.
If possible, try this. Start the engine and allow it to idle. Open the oil fill cap and see if there is a lot of pressure coming out. Let me know what you find.
Let me know.
Joe
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Friday, August 28th, 2020 AT 9:05 PM