Question about 1985 Plymouth Horizon

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1985 PLy Horizon distributor rotor position

I need to make sure that the rotor is pointing at the right wire when at TDC for no 1 cylinder. What direction should it be pointing?

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Find the end of the plug wire for cylinder 1. Place the plug wire into the distributor cap. Rotate the Crankshaft until Cylinder #1 is TDC. align the rotor in the distributor cap with plug wire number 1.

Posted on Nov 23, 2008


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If I accidentally pulled distributor out without knowing exact location of rotor how do I find correct placement for rotor? 2002 Nissan quest

This is just a shot in the dark... But i THINK the # 1 cylinder needs to be @ top dead center.... And the rotor needs to be pointing at the part of the cap where the spark plug wire connection for cylinder #1 is.

Mar 02, 2015 | Nissan Cars & Trucks

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Replaced old distributor with new "OE" distributor, but failed to mark old rotor position. I know to find #1 cylinder - do I aim rotor at #1 position when TDC is located?

you need to make sure you are on the compression stroke when the piston comes up to TDC for cylinder #1. Most times you can just feel the compression with your finger over the spark plug hole. After determining the #1 cylinder is at TDC on the compression stroke, note the position of the #1 spark plug lead on the distributor cap. You will need to line up the rotor with the terminal inside the cap for #1.

Jun 04, 2011 | Pontiac Firebird Cars & Trucks

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How do i install a distributor to a nissan pick up

It is necessary to place the No. 1 cylinder in the firing position to correctly install the distributor. To locate this position, the ignition timing marks on the crankshaft front pulley are used.

Remove the No. 1 cylinder spark plug. Turn the crankshaft until the piston in the No. 1 cylinder is moving up on the compression stroke. This can be determined by placing your thumb over the spark plug hole and feeling the air being forced out of the cylinder. Stop turning the crankshaft when the timing marks indicate TDC or 0.

Oil the distributor housing lightly where the distributor bears on the cylinder block.

Install the distributor so that the rotor, which is mounted on the shaft, points toward the No. 1 spark plug terminal tower position when the cap is installed. Of course you won't be able to see the direction in which the rotor is pointing if the cap is on the distributor. Lay the cap on the top of the distributor and make a mark on the side of the housing just below the No.1 spark plug terminal plug terminal. Make sure that the rotor points toward that mark when you install the distributor. On the VG30i, align the mark on the distributor shaft with the protruding mark on the housing.

When the distributor shaft has reached the bottom of the hole, move the rotor back and forth slightly until the driving lug on the end of the shaft enter the slots cut in the end of the oil pump shaft and the distributor assembly slides down into place.

When the distributor is correctly installed, the breaker points should be in such a position that they are just ready to break contact with each other or a lobe of the reluctor is aligned with the stator contact. This is accomplished by rotating the distributor body after it has been installed in the engine. Once again, line up the marks that you made before the distributor was removed from the engine. On the VG30i, the distributor rotor should be in the 11:25 o'clock position (between 11 and 12 o'clock).
  1. Install the distributor hold-down bolt.
  2. Install the spark plugs.
  3. Install the cap, primary wire, and vacuum line(s).
  4. Install the spark plug leads. Consult the marks made during removal to be sure that the proper lead goes to each plug. Install the high tension wire if it was removed.
  5. Start the engine. Check the timing and adjust it if necessary.

    Hope this helps, be sure to upvote if it does :)

May 04, 2011 | 1985 Nissan Pickup

1 Answer

Top dead center-how can you tell where the rotor is pointing since it's round to see if it's pointingto #1 spark plug

The rotor may be round but it has a metal contact point on it. When that is pointing to the #1 spark plug wire position on the distributor cap and the TDC timing marks on the crankshaft pulley are lined up, it is at #1 TDC.

Feb 18, 2011 | 1985 Nissan Pickup

2 Answers

Replaced distributor and new one would not line up. Lined up rotor as best I could and tried to start. Ran rough and horn beeped twice!. Removed, put at TDC and lined up rotor with #1 plug. Now engine...

wow the engine timing is definatly off. first things first are you sure you have correct replacement distributor? you may have the timing 180 degrees off, the easiest way to set tdc is remove #1 spark plug insert long handle screw driver and then line up 0 degree timing mark on crank shaft pulley to timing cover while watching screwdriver to raising as high as possible, this is ensuring that the #1 piston is all the way up. now you are surely on tdc. at this point remove distributor cap and se what cylinder # the rotor is pointing to. the firing order is 1,5,3,6,2,4 with the rotor moving in a clockwise motion here is a picture to help.cables.jpg if the rotor is not pointing which i doubt it will be remove distributor and re install with rotor pointing towards cyl. #1. hopr this was helpful if so please rate positive.

Dec 04, 2010 | 1993 Jeep Grand Cherokee

1 Answer

Rebuilt my 454 engine, installed distributor with rotor at 0 TDC on #1 cylinder. Engine ran fine but ses light was on. Code was P1345-- disagreement between cam sensor and crank sensor. Scanner showed...

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

There is a mark or notch on the distributor housing that the rotor should be pointing to when the engine is on TDC. (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 TDC.

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 (usually has a #6 for 6 cylinder engines or a #8 for 8 cylinder engines) indicating the number one TDC alignment position.

3. With the engine on top dead center the ignition rotor should be pointing to the number one TDC alignment 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 and aligned with the TDC alignment mark or notch on the distributor housing and then tighten down the distributor, the engine should now be "Static" timed. (The more precise that you are aligning the TDC alignment mark with the ignition rotor the better the engine will run, and it will be less likely that there will be a camshaft to crankshaft correlation problem)

If the distributor can not be turned enough to align the ignition rotor with the number one TDC alignment 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.



Oct 25, 2010 | 1998 Chevrolet K2500

1 Answer

Where is the number one spark plug wire go on the distributor cap of a 1995 chevy s-10 vortec v-6 engine

Starting at the point closest to the front of the vehicle for no 1 position on the distributor connect in clockwise direction 1-6-5-4-3-2.
If you are not sure get no 1 piston at TDC. Remove spark plug on drivers side front of the engine. Insert a wooden or plastic dowel into the plug hole and turn the engine with a wrench until the dowel reaches its topmost point. Be careful not to get the dowel fouled inside the cylinder.
Now remove the distributor cap. The rotor should be pointing towards you. This is no 1 position on the distributor. If the rotor is pointing away from you then it is at no 4 position.

Aug 14, 2010 | Chevrolet S 10 Cars & Trucks

4 Answers

Replacing distributor and I lost the position of the rotor and truck wont start... do I need to take #1 cyl to top? and the aline rotor?

Yes, when cyclinder one is at top, the rotor should be pointing towards the #1 spark plug wire

Nov 16, 2009 | 1999 GMC Jimmy

2 Answers

Distributor and timing

Remove your #1 cylinder spark plug, then put a screwdriver into the hole and manually turn the engine until the piston comes to the top of the cylinder. From there, point the rotor of the distributor to the #1 spark plug wire (you may again may have to turn the oil pump drive shaft). From there, your engine should start, and you can adjust your timing properly.

Jun 09, 2009 | 1985 Chevrolet C2500

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