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Setting Timing
Seperator Bar

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Setting/checking the timing on our cars is relativity easy and even covered in the TSRM but I thought I would put it here too. These instructions are for the turbo model. I think the only difference is that we have a Cam Position Sensor that we move to adjust the timing and the NA Supra moves the distributor. Either way it is a good idea to check your timing as part of your regular maintenance.


Tools: Paper clip or jumper wire
    Timing Light
    12mm Box Wrench
    10mm Socket
    12mm Socket


Instructions
1. Using a 12mm socket remove the 2 bolts holding the ISC/BOV pipe in front of the 3000 pipe.
2. With a 10mm socket remove the 5 bolts holding the ignition coil pack cover.
3. Remove the oil cap then carefully pull the ignition coil pack cover off and replace the oil cap.
4. Start the engine and make sure it is warm.
5. Jumper the E1 and TE1 terminals in the diagnostic block.
6. Now the "check engine" light should be blinking on the dash. If it is blinking fast that is good, if it is not blinking at all check your jumpered connection, if it is blinking slowly you have error codes stored. You can still set your timing no problem but you should write them down and see why they are happening.
4. Connect the spark sensor lead from the timing light over the #1 ignition wire being carefully not to pull too hard on it.
5. Hook the ground lead of the timing light to the battery.
6. Hook the positive lead of the timing light to the battery.
7.
Timing readingNow with the engine idling at 650 RPM, and nice and warm, point the timing light at the crank shaft pulley and read the current timing mark. 10° BTDC is the stock setting, but some people run higher up to 14° BTDC. If you are reading this because you don't know how to set your timing I would leave it at 10° BTDC.
8. If your timing needs adjustment loosen the retaining bolt holding the CPS (12mm) to the block just enough so you can rotate it then move it until the timing is at 10° BTDC. Tighten the bolt and check the timing it still at 10° BTDC.
9. Remove the timing light and jumper wire.
10. Remove the oil cap, replace the ignition coil pack cover and tighten the 5 10mm bolts, replace the oil cap.
11. Replace the 2 12mm bolts for the ISC/BOV pipe.



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