Q: with the#1 piston up were should the rotor button be pointing

asked by on

If I have the #1 piston up were should the rotor button be pointing when I pull the distributor cap off.
My car has an automatic transmission.

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. Once for the exhaust stroke and again on the compression stroke. The mechanical ignition timing should be set so that the rotor hits the corresponding cylinder on the compression stroke to ignite the air/fuel mixture.

If you need some assistance with this, consider YourMechanic, as a certified technician can come to your location and help you with this is person. Good luck.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. with the#1 piston up were should the rotor button be pointing

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do you remove the pistons in the engine while the engine is in the car?

Hi there. You will have to remove the timing belt, exhaust manifold, intake manifold, all vacuum lines, the cylinder head, and the oil pan to gain access to the piston removal. Drain out all of the oil from the oil...

Q: rpm's cutting engine power

Hello. This is normal for this truck. Due to the design of the control systems and the variable valve timing, the computer will attempt to adjust everything during this type of maneuver. Using an aftermarket computer programmer can make this...

Q: Lack of power and engine is roaring

What you are describing sounds like you may have a clogged or damaged catalytic converter. The catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere. When the catalytic converter is...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...