Which spark plug wire goes to which cylinder?
Cylinders 1 and 2 are always closest to the engine. On most four-cylinder engines — no matter the make — the firing order is 1-3-4-2 and the cylinders are numbered 1-2-3-4, with No. 1 being the closest to the front of the engine.
What happens when a spark plug wire goes bad?
Bad spark plug wires will ultimately affect your engine’s performance. When you have bad spark plug wires, you’ll experience engine surging, engine hesitation, engine surging, and rough idling.
Does changing spark plugs matter firing order?
Q. Will a Car Run With the Wrong Firing Order? When the firing order is wrong, the vehicle may run, but it will not run properly. The wrong firing order makes the spark be delivered to the cylinder either when there is no air and fuel mixture or when the mixture is not properly compressed.
What happens if you get the firing order wrong?
When the firing order is wrong or delayed, the engine does not run properly. The spark may be delivered to the cylinder when there is no fuel/air mixture or before it is properly compressed. One symptom of an incorrect firing order is the engine does not run. Turning the ignition does not start the engine.
Where is the #1 on the distributor cap?
Finding the Number One
- Look on the distributor cap. Some manufacturers label the number one terminal.
- Follow the wire from the number one cylinder to the distributor cap.
- 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.
Do you really need to change spark plug wires?
That’s because spark plug wires aren’t actually made of wire. They’re made of delicate carbon fibers. That’s why it pays to replace your spark plug wires before they wear out. We recommend changing them during spark plug changes (whenever your owner’s manual recommends, usually between 60,000 and 100,000 miles).