Where should the distributor rotor point

The rotor button should be pointing to the number 1 position on the distributor cap when the number 1 piston is at top dead center (on the compression stroke). The pistons come up two times during the combustion cycle.

How do you install a 5.7 Chevy distributor?

  1. Use the spark plug socket to remove spark plug wire off the No. …
  2. Stick the screwdriver in the spark plug hole, and have the helper bump the engine over each time you tell him to “bump it.” As the piston comes up, the screwdriver will move up in your hand.

What problems can a bad distributor cause?

In comparison with modern cars and their solid-state ignition systems, the distributor has to be one of the most infernal parts of an older engine. If not regularly checked and maintained, it can cause all kinds of problems, like poor starting, misfiring, low power and, er, being stuck on the side of the road.

What are signs of a bad distributor?

  • Unexplainable Shaking. A classic telltale sign that your distributor is going bad is unexplained shaking whenever the car is running. …
  • Difficulty in Starting. …
  • High-Pitched Squealing.

What should SBC timing be set at?

Depending on your cylinder heads, compression ratio, camshaft, and centrifugal advance curve in the distributor, “normal” base timing for a street high-perf small-block Chevy is somewhere in the 12- to 18-degree before top dead center (BTDC) range, with total timing at full centrifugal advance about 34 to 36 degrees …

How long does it take to change a distributor?

A distributor specifically can be time consuming to remove and correctly install, since it’s dependent on perfectly aligning the distributor and adjusting ignition timing after the replacement. In general however, this type of job in a shop environment can take up to 8 hours to complete correctly.

What should timing be set at Chevy 350?

The timing can vary between 2 and 12 degrees BTDC, the recommended spark plugs are different and even the plug gaps vary. In most cases starting out with 12 degrees of initial advance is about right.

How do you remove and replace a distributor?

Loosen the bolt or bolts holding the clamp plate to the engine. Undo the pinch bolt and carefully withdraw the distributor. If the distributor is tight, insert a screwdriver blade between the open ends of the clamp plate and prise them slightly apart.

Does a distributor need to be timed?

Replacing the distributor requires you to use a timing light to set the timing of the engine after the new distributor is installed. To do this, you’ll need to use the timing specifications unique to your vehicle. … You may also be able to find these in your vehicle’s manual or online.

Where is the number one on a distributor cap?
  1. Look on the distributor cap. Some manufacturers label the number one terminal.
  2. Follow the wire from the number one cylinder to the distributor cap. …
  3. You can also find the number one terminal by turning the engine manually until the timing marks on the camshaft and crankshaft are lined up.
Article first time published on askingthelot.com/where-should-the-distributor-rotor-point/

How do you know if your distributor is 180 off?

You can determine if it is 180 out by removing #1 plug and placing your finger/thumb over the hole. (Temporarily remove the wire from the coil first) Have someone “tap” the starter and you will feel pressure trying to to blow your finger away. This is the compression stroke.

Which way do you move a distributor?

Turn the distributor in a counterclockwise direction to advance the ignition timing. Do not over-adjust the distributor, as even a slight movement will yield a significant change in the ignition timing.

What way does a distributor spin?

Your distributor will rotate clockwise or counter-clockwise. You will need to determine the proper direction of rotation before proceeding.

Can a distributor go bad from sitting?

They will thoroughly inspect your system and replace the distributor rotor and cap. Since the distributor rotor and cap can go bad over time because they are located in a harsh environment, it is important to know the symptoms this part will give off before it completely fails.

What makes a distributor go bad?

Sometimes, the issue is a slight buildup of carbon inside the distributor. This carbon trace can conduct electricity that affects performance. It could short out the coil voltage and cause a faulty connection inside the terminal of the distributor cap. The result is a misfire in the spark plugs.

Will a bad distributor cause a car to shake?

Inexplicable shaking, while the engine is running is a classic symptom of a failing distributor. This may range from a light vibration to a more pronounced shaking that can be felt throughout the car. A possible cause for this is a distributor rotor that is not spinning as it should.

What happens if your distributor timing is off?

When this starts to happen at the wrong time, the combustion process is off. This causes your engine to use more fuel to compensate for reduced power. Overheating: If the air and fuel mixture is ignited too soon in the combustion process, the heat generated will increase. This can damage different parts of the engine.

What are signs of a bad spark plug?

  • Engine has a rough idle. If your Spark Plugs are failing your engine will sound rough and jittery when running at idle. …
  • Trouble starting. Car won’t start and you’re late for work… Flat battery? …
  • Engine misfiring. …
  • Engine surging. …
  • High fuel consumption. …
  • Lack of acceleration.

What are signs of a bad engine coil?

  • Engine misfires.
  • Rough idle.
  • A decrease in car power, especially in acceleration.
  • Poor fuel economy.
  • Difficulty starting the engine.
  • Check engine light is on.
  • Exhaust backfiring.
  • Increased hydrocarbon emissions.

Where is the number one cylinder on a 350 Chevy?

For the Chevy 350, the cylinders are usually arranged from the front of the engine to the back, starting at the driver’s side. This means that the front left cylinder is cylinder 1.

How do you know if a piston is at TDC?

You can turn the crankshaft back and forth (by hand ) while observing motion of the ( screwdriver; coat hanger or straw ) to get a better idea of the location of the piston. When you see it has reached its highest point of travel, it is at (TDC).

Do I need a coil with an HEI distributor?

Most—but not all—HEI systems have the ignition coil mounted in the distributor cap. A control module and magnetic pickup are mounted in the distributor, in place of a conventional ignition system’s breaker points and condenser.

What wires go to an HEI distributor?

Connect the primary wires to the HEI distributor, via a plug that snaps into the distributor cap. There are two wires in the plug: the hot wire and the tachometer wire. If you are updating from an old distributor, splice the old distributor hot wire to the hot wire of the HEI primary plug.

What happens if timing is too advanced?

Overheating. If ignition timing is too far advanced, it will cause the fuel-and-air mixture to ignite too early in the combustion cycle. This can cause the amount of heat generated by the combustion process to increase and lead to overheating of the engine.

How do you set the time on a SBC without timing light?

Any engine that does, you can warm up the engine and with it running, hold the throttle open to about 4000 rpm and advance the timing until it starts to miss, then just back it off slightly and tighten it down. That will put it very close.

How can I make my 350 faster?

  1. Modify your air intake. …
  2. Modify your exhaust. …
  3. Change your camshafts and valve train. …
  4. Purchase new cylinder heads, or have yours ported and polished. …
  5. Have your motor rebuilt and blueprinted.

What year Chevy 350 is the best?

  • LT-1 – 1970. When the LT-1 hit the scene in 1970, it took the world by storm. …
  • L98 – 1992. Another fan favorite is the 1992 L98 350 engine. …
  • L31 – 2002. Last but not least, the 2002 L31 350 Chevy engine deserves recognition.

What is the difference between initial timing and total timing?

Initial timing refers to where the timing is set at an idle. This is also where you position the distributor when setting the timing. … For instance, a distributor may be set up to supply 21° of centrifugal advance. Total timing is the term given to the highest amount of advance.

What does the distributor do in a car?

A distributor is an enclosed rotating shaft used in spark-ignition internal combustion engines that have mechanically timed ignition. The distributor’s main function is to route secondary, or high voltage, current from the ignition coil to the spark plugs in the correct firing order, and for the correct amount of time.

How much is a distributor cap and rotor?

When you need to replace your distributor cap and rotor because they have gone bad, you can expect to pay anywhere from $70 to $130 for the job. This total includes both parts and labor costs together. In most cases, expect to pay somewhere between $30 and $60 for parts and another $40 to $70 in labor.