UNDER HOOD STICKER GONE. NEED IGNITION TIMING SPECS FOR 91 RANGE ROVER 3.9 DISTRIBUTOR NO.42649A. THANKS RANDAL.

2.8L VIN R Disconnect Tan/Black wire EST by-pass connector located near heater housing in engine compartment on S/T Series, or near distributor on all other V6 models. DO NOT disconnect 4-wire connector at distributor. 10 degrees at idle.

Ignition timing manual setting 1994 Toyota 4 Runner.
- Remove the distributor cap.
- Pull up the hand brake, place the vehicle in P or Neutral.
- Rotate the crankshaft pulley with a suitable tool to bring the timing mark at 5 degrees BTDC and the reluctor position in front of No. 1 position in distributor.
- Remove the rotor and adjust the distributor (by loosening two distributor locking bolts) in such a way that the No. 1 reluctor tooth just cross the G1 pickup coil notch in the direction of rotation in the distributor.
- Lock the distributor bolts, install rotor and install distributor cap.

The '99 should never have to be "timed".
Did you loosen the distributor?
Was the engine apart?
There is a timing mark. refer to the emission sticker,under the hood or on the hood.
There is a spec for it. Follow the procedure for timing.

This is taking me back some...have not seen one of these for years......

Spec's are usually a sticker on the underside of the hood with timing and valve gap clearances.

On the crank pulley is a notch or pointer for TDC . On the front cover, next to the pulley, are about 4 timing lines . The hood sticker tells you the notch to line position for timing as these lines on the cover where painted different colours.

Being as you have no sticker...time it at warm idle speed with the pulley pointer/notch to the first line on the cover with a timing light.

To highlight the marks you can dab them with White Out or similar. Without a timing light you can only approximate the timing be rolling the engine forward while watching for a spark from the #1spark lead jumping to ground with an old plug in the end of the wire.

Another way is to drive and then stop to advance the timing at the distributor until you hear pinging on full acceleration from low rpm's. Then back off the timing a few degrees until the pinging stops.

A l-o-n-g time ago....we used to time engines with a vacuum gauge plumbed into the manifold down stream of the throttle.

Run the warmed up engine at 3500 rpm steady, with vacuum lines to the distributor removed and plugged, advance the timing until highest vacuum reading...usually around 19 to 23 inches vac'. Then back the timing off 3 degrees or 2" to 3" inches of vacuum and leave it there.

Road test for performance and pinging.

There is a lable (sticker) in engine compartment with info for this car, might be on the hood or radiator support or fender well areas.
See what lable you can find under the hood and read them all , one of them has specs for the engine size.
2.2l - 4cyl.
2.7l - 6cyl.
The other way , see how many wires coming out of ignition distributor , if it's 4 - you have 4cyl. , if it's 7 - you have 6cyl.

diaconnect the vacuum advance, and loosen the distributor hold down bolt just enought so you can turn the distributor, at idle turn dist, to advance mark on the harmonic damper to spec, either found on a sticker under the hood of from manual, need a timing light, tighten dist bolt ,

the traditional way of setting your timing would be better, get a loan of a timing light, the sticker under your hood should tell you the spec. usually 10-12 degrees btdc at idle with the timing advance disconnected. the timing advance is a tan wire with a black stripe usually found behind a plastic relay cover on the upper passenger side of the firewall near the distributor. there will be 3 plastic nuts holding the cover. you can mark the harmonic balancer tdc with liquid paper so it is easier 2 see with the light.

Ignition:

Warm idle speed at 750 Rpm, 15 degrees Before Top Dead Center.
Firing Order: 1-3-4-2
Distributor rotates Clockwise.

Or is this a question of timing the timing sprockets?

Hello snowcat426a:Not knowing for sure thing like altitude or if Calif. emissions here are all the specs. 318 w/2bbl. carb. man. or auto trans. 12 @ 750 rpm. with California emissions auto or man. trans. 16@700 rpm high altitude with auto or man. trans 16@700 rpm. If equiped with a 4 bbl carb. the specs are as follows. 4 bbl.stand trans 12@750 .with automatic 16@750 rpm. With California emissions stand. transnission 16@750 rpm. Automatic specs for California emission are not available.Heavt duty specs. man trans, 8@750 rpm.auto is the same as the man. transmission specs. Should you need further help just ask. please leave rating as this helps with feedback. Thank You for using FixYa. Roger

You Have OBD1 Late model computer.. Im pretty sure ya dont set the ignition timing on that one