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Where does the rotor button point to when timing a 4.3 voted when you have the number one at top dead center?

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  • Cars & Trucks Master
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It should point to the contact just before number 1 cylinder, once motor running you should set ignition timing with a strobe

Posted on Dec 05, 2016

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54 Chevy 235 runns but no power and overheats.Should I have pointed rotor toward spark plug not distributor cap #1.My e-mail is jmincey23@sbcglobal.net


timing is way to slow. are points gap set properly. I think they are set at .016 for used points.
Fireing order is 1-5-3-6-2-4
with timing mark set at top dead center .i think it is a ball on back of engine. distributer rotor should be at #! .

Aug 18, 2011 | Chevrolet Chevy Cars & Trucks

1 Answer

What is the timing specs for a chevy 98 suburban V8 350 gas.


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.


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Aug 05, 2010 | Chevrolet Suburban 1500 Cars & Trucks

1 Answer

Need to know where the timing marks are on cam and cranck for 1991 oldsmobile sillouetechanging the timing chain.how do i line up the marks?


Finding the timing marks is simple, it is an impression (a small arrow) on both the crank and the cam. As for the exact time set, I would refer to the owner's manual but if you are doing it off the cuff pull the number one piston top dead center, line up the rotor button with the number one piston and set crank at top dead center and cam at bottom dead center. This will be a good starting point, but the owner's manual will give you more exact instructions.

Jul 23, 2010 | 1991 Oldsmobile Silhouette

1 Answer

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

Jul 06, 2010 | 1997 GMC Sierra K2500

1 Answer

Cam/Crank Sensor correlation problem


Thr problem should be the static timing for the distributor, and this is how it should be set;

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.

3. With the engine on top dead center the ignition rotor should be pointing to the 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, the engine should now be static timed.

Jun 12, 2010 | 1999 Chevrolet C2500

2 Answers

How do you set the timing on a 1998 GMC Sierra?


The timing is not adjustable and it is computer controlled, but the distributor must still be clocked in properly and static timed, and here is how it is done.

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.

3. With the engine on top dead center the ignition rotor should be pointing to the 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, the engine should now be static timed.

Jun 12, 2010 | 1998 GMC Sierra

2 Answers

Need to know the plug wiring distributo to plugs


take distributor cap off turn engine over so u can work out which way the rotor arm spins.then turn engine over manually till u lign up timing mark on crank pulley roto shld now point to number 1.firing order is 1 3 4 2 making sure u do this cobination the way the rotor turns when engine is tiurning over

Apr 14, 2010 | 1996 BMW 318

2 Answers

We need the timing specs for and 86 2.3 ford mustang


Ignition timing should be set at 10 degrees BTDC (before top dead center), with vacuum advance hose disconnected and plugged, engine idling at 800 rpm or less.

Jan 10, 2010 | 1986 Ford Mustang

1 Answer

1981 280zx cannot get timming adjusted. car runs rough


make sure you have it on number 1 cyl top dead center, cause you can actually have it on number 6 cyl instead of number 1... seen it many times, same as on 4 cyl inline... its that inline thing going on...

Aug 06, 2009 | 2006 Datsun Maxima

1 Answer

Need timing setting for 1998 Dodge Ram 1500


Put the number one piston at TDC (top dead center) Pull the cover off the distributor and check to see if the rotor is pointed at the number 1 plug wire. If not check to see if its directly accross from number 1 if so pull the distibutor out and turn the rotor button around 180 degrees. The distibutor can only go in 2 ways. Dead on the money or 180 degrees out. This info is assuming you havent replaced the timing chain or anything that effects factory time settings.

Mar 08, 2009 | 1998 Dodge Ram 1500 4WD

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