Question about 1991 Honda CB 250 Nighthawk

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Hi, which the correct mark on distributor plate for adjust timming ignition on honda 650 nighthawk 1982 ? i see 4 marks and 3 letters T,F,S on this plate its on rigth side engine thanks for help

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  • Honda Master
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T should be top dead centre TDC(when piston is exactly at top of stroke)
F should be fire(when the ignition triggers)
S not sure? but could be the mark the timing advances too when the bike is reved

Posted on Apr 05, 2011

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I removed the distributor and can't seem to get it back in time, have spark, no blown fuses, at TDC rotor is lined up with number 1


Honda CRV/Odyssey 1995-2000 Repair Information
Distributor

Print


REMOVAL & INSTALLATION

The radio may contain a coded theft protection circuit. Always make note of the code before disconnecting the battery.

  1. Disconnect the negative battery cable.
  2. Access the crankshaft pulley bolt through the left side inner fender liner. Use a socket, long extension and a suitable ratchet to rotate the engine. Rotate the engine counterclockwise until the white Top Dead Center (TDC) mark on the pulley aligns with the pointer on the engine cover.
  3. Label the ignition wires, but do not remove them.
  4. Remove the distributor cap and note the location of the ignition rotor. If the ignition rotor is not pointing toward the terminal of the distributor cap for cylinder No. 1, rotate the crankshaft one complete revolution counterclockwise, and align the white (TDC) mark on the pulley with the pointer on the engine cover.
  5. If the distributor is going to be reinstalled, make an alignment mark between the distributor housing and the cylinder head using a scribe or a chisel. Then, and using a scribe, felt tipped marker or touch up paint, make an alignment mark on the distributor housing for the rotor.
  6. Uncouple the electrical connectors on the side of the distributor.
  7. Remove the three distributor mounting bolts, then remove the distributor from the cylinder head.

See Figures 1, 2 and 3

0900c1528026a5f0.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: Exploded view of the distributor mounting-Odyssey 4-cylinder models


0900c1528026a5f1.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 2: Exploded view of the distributor mounting- CRV shown


0900c1528026a5f2.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 3: The distributor keyway is offset and can only be installed in one direction

To install:
If the camshaft or crankshaft has rotated during assembly, rotate the crankshaft counterclockwise until the white Top Dead Center (TDC) mark on the pulley aligns with the pointer on the engine cover. If the valve cover and upper timing cover have been removed, be sure the UP mark on the camshaft is facing up, and that the crankshaft TDC mark aligns with the pointer on the lower timing cover.

  1. Coat a new O-ring with clean engine oil and install it onto the distributor shaft.
  2. Install the distributor into the cylinder head. The offset lug on the distributor shaft will fit into the groove on the end of the camshaft in only one direction. If the distributor is being reinstalled, align the marks made during disassembly.
  3. Install the three mounting bolts, only hand-tighten them at this time.
  4. Couple the electrical connectors on the side of the distributor.
  5. If removed, reconnect the ignition wires in the correct order.
  6. Reconnect the negative battery cable.

The Powertrain Control Module(PCM) idle memory must be reset after reconnecting the battery. Start the engine and hold it at 3000 rpm until the cooling fan comes on. Then allow the engine to idle for about five minutes with all accessories OFF and with the transaxle in Park or Neutral.
  1. Check and adjust the ignition timing. Refer to the ignition timing procedure outlined in General Information and Maintenance .
  2. Enter the radio security code.

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Have you tried checking here?

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Installed new crate engine 1997 5.7 vortec, how do you adjust the timing? 1997 GMC Serria 4x4 1500


The ignition timing is not adjusted with a timing light or with the engine running, and to set the ignition timing follow these proceedures.

There is a mark or notch on the distributor housing that the rotor should be pointing to when the engine is on top dead center. This "static" timing is all that matters and the computer will be able to control the timing as long as the ignition rotor is in that position when the engine is at top dead center.

1. Place the engine at top dead center.

2. Look under the distributor cap and find where the number one terminal runs under the distributor cap, and where that position on the distributor cap corresponds with the distributor housing, and it should match up to a mark or a notch on the distributor housing indicating the number one position.

3. With the engine on top dead center the ignition rotor should be pointing to the number one mark or notch that is on the distributor housing, if it is not then loosen up the distributor and turn the distributor until the ignition rotor is pointing to the mark or notch on the distributor housing and then tighten down the distributor, the engine should now be static timed.

If the distributor can not be turned enough to align the ignition rotor with the number one mark on the distributor housing, or the distributor does not set properly and will not allow the installation of the spark plug wires then the distributor is not installed correctly and is most likely a tooth off and it will need to be re-installed correctly. (The distributor should set like it is shown in the firing order diagram when it is properly installed)

Here is a firing order diagram to also help assist you.


445ea9b.jpg

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Distributor Timing


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How do I reset the timing on a 1994 ford ranger?


Distributorless Ignition is not adjustable However the Distributor Ignition System is
1 Place Transmission in Park on Manual (Neutral and set Park Brake
2 Ensure all accessories are off AC ,Heater, Radio, ETC...
3Connect an inductive timming light and Tach to the Engine according to manufactures instructions
4 disconnect the single wire inline spout connector or the shorting bar from the double wire spout connector( should be located near hood hinge on fenderwell drivers side small Gray plug with pc of Tape around it ) or near distributor
5 using a pc of yellow chalk laying flat onto the Crankshaft harmonic balancer and marking the entire timing marks area this will make it easier to see the correct timing marks
6 Start engine and bring to normal operating temp.
7 Check Idle speed and adjust if needed this should be non adjustable on your vehicle
8 Check initial timing by aiming the timing light at the marks and pointer.see emissions label under hood for exact timing Specs.
9 if the marks don't line up shut down engine
10 loosen the hold-down bolt on the distributor base but not so much that the distributor turns when assistant restarts the engine
11 restart engine
12 have assistant aim timing light at marks and pointer
13 while holding the distributor Base Shaft with the proper sized wrench at the base or insulated channelocks loosen the hold down bolt and advance or ****** the distributor until the correct timing marks line up.hold in that position while assistant shuts engine off
(NOTE) when retightening the distributor bolt it can have the tendancy to turn the distributor
14 retighten the distributor bolt while holding the shaft firmly to prevent spinning
15have assistant restart engine
16 Verify that the timing marks still line up with pointer if non alignment , readjust using steps 9 thru14 again
17 once it is set correctly and bolt is tight on distributor base shut down engine. Reconnect in-line Spout Connector or reinstall inline spout shorting bar and assure that timing is advancing beyond initial settings by starting the engine and aiming at the timing marks when engine is slightly reved the timing should advance slightly 2-4 degrees maybe more depending on mileage
18 if timing can't be achieved because distriburor was removed you must
1 unhook coil wire
2 remove the #1 Sparkplug verify that the #1 piston is at the top of the compression stroke (must be on top compression stroke) if it isnt have assistant crank engine slightly to get close with coil wire unplugged. DO NOT turn the crankshaft backwards at any time to get piston into position 3 once piston is in position remove the battery cables, remove the distributor cap with wires intact and verify that the rotor cap is at center of the #1 point in the distributor cap if it isn't
4 loosen & remove the distributor bolt
5 lift the distributor only slightly enough to disengage the gear on the shaft from the camshaft gear (NOTE) when letting it back down into the engine it will spin the rotor off of the #1 position so it must be turned far enough to compensate for this turning when it is reinstalled
6 seat the distributor shaft in the hole and reinstall the retainer bolt and tighten then use the steps above to fine tune the timing

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How to set the timing on a ford ltd 1982


POINT TYPE IGNITION SYSTEMS
  1. Locate the timing marks on the crankshaft pulley and the front of the engine.
  2. If they appear dirty, clean the timing marks with a wire brush. Once clean, apply white paint to the marks to make them more visible.
  3. Attach a dwell meter/tachometer to the engine.
  4. Attach a timing light according to the tool manufacturer's instructions.
  5. Unfasten the distributor vacuum line at the distributor and plug the vacuum line. A small bolt, center punch, golf-tee, or similar object is satisfactory for a plug.
  6. Check to make sure that all of the wires, whether disconnected or attached to the timing light or tachometer, clear the fan and belts.
  7. Start the engine and allow it to reach normal operating temperature.
  8. Adjust the idle to the correct setting, if needed.
  9. Aim the timing light at the timing marks and depress the trigger on the light. If the marks on the pulley and the engine are aligned when the light flashes, the timing is correct. Turn OFF the engine, then remove the tachometer and the timing light. If the marks are not in alignment, proceed with the following steps.
  10. Loosen the distributor lockbolt (a special distributor wrench is available) just enough so that the distributor can be turned with effort.
  11. With the timing light aimed at the pulley and the marks on the engine, turn the distributor in the direction of rotor rotation to ****** the spark, and in the opposite direction of rotor rotation to the advance spark. Align the marks on the pulley and the engine using the flashes of the timing light.
  12. When the marks are aligned, tighten the distributor lockbolt and recheck the timing to make sure that the distributor did not move when you tightened the lockbolt.
  13. After timing has been set, tighten the distributor hold-down bolt to 17–25 ft. lbs. (23–34 Nm).

While pointing the timing light at the timing marks, the other hand can rotate the distributor body to reach the correct alignment

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