The old distributor was changed with an electronic one
Set No. 1 to TDC/COMPRESSION. To set in the following manner.
a. Remove No.1 spark plug.
b. Place your finger over the hole of the no.1 spark plug and rotate
the crankshaft clockwise to tdc. If pressure is felt on your finger
this is TDC/Compression of the no.1 cylinder. If not repeat the
process.
c. Position the slot of the oil pump drive from 12 o clock looking
at it from the bolt that holds the distributor down should be
approx at 30 degrees to the right.
d. Align the groove of the housing with the drill mark of the driven
gear (not driven gear straight pin).
e. Insert the distributor, aligning the center of the flange with that
of the bolt hole on the cylinder block.
f. Also you can line up the no.1 marking of the cap to the rotor position
for no.1
SOURCE: HOW DO I SET DISTRIBUTOR TIMING?
Hi,
Actual timing would depend on what engine is installed in the 1985 Corolla. There are some versions that uses the 4A-GE, 4A-GEC, 4A-C engines. There are even some Asian versions that used the 4K/B engines.
The correct method would be to use timing light, engine analyzer and some other test equipment, However, below is a quick and dirty procedure. Basically, to adjust the distributor timing, you need to:
1. make sure cylinder 1's piston is at firing position/TDC (top dead center);
2. crankshaft pulley's timing mark is between the markings on the engine with numbers on them;
3. unplug the rubber boot of the high tension wire for #1 cylinder;
4. connect to it a spare known good spark plug and allow to touch any metal surface of the engine;
5. slightly loosen the single locking bolt of the distributor stem;
6. turn ignition key to ON but not start;
7. carefully swing the distributor assembly till there is spark in the exposed spark plug;
8. tighten locking bolt.
You may need to readjust the distributor for highest idling RPM with the engine running by simply turning the entire distributor assy.
The timing mark must coincide with the specified advance for whatever engine is used by the Corolla. 8 degrees would be a fair start.
Extreme care when working with engine running; extremely high voltage at the high tension wires, distributor and ignition coil and the fan/belt has been known to catch loose clothing.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards.
Thank you for using FixYa.
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SOURCE: replace old points distributor with a electronic
this is easy if you can find parts meant for it. Need a distributor, a crank sensor and pulley with a reference point for the sensor, a control module, coil, cap, rotor, wires, and you should be good to go.the CKP (crank sensor) tells the module when to fire, the module fires the coil, and the distributor determines basically when it fires in terms of milliseconds (basic timing), same as with points. The timing via distributor is necessary since the fuel is not controlled via CMP (cam sensor). otherwise the distributor would be fixed and the computer would control fuel volume/timing and ignition timing at the same time, and since there is no reference for the fuel or valve timing, the module has no way to determine the most effective timing therefore simply fires when the crank passes the sensor.
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SEQUENCE IS START IN THE MIDDLE WORK IN CIRCLE TORQUE IS 53TO63 FT LBS IN THREE STEPS I START AT 30 FT LBS
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