Where can you find out the location of cylinder number one the firing order and the timing specifications for a particular engine?
On an inline engine: the number one cylinder is located at the front of the engine, closest to the timing cover. On a V type engine: one cylinder head is slightly forward of the other, toward the front of the engine. Cylinder number one is the forward most cylinder in that bank.
How do I check my firing order?
Obtain the firing order for your vehicle. You can find the firing order in your vehicle’s owner’s manual or in a repair manual for your specific vehicle. If you have neither handy, an auto parts store employee might look it up for you. You also need to know if the rotor turns clockwise or counterclockwise.
Do spark plugs come already gapped?
Do Spark Plugs Always Have to Be Gapped? Not always. In the past, it was necessary to gap spark plugs, but today spark plugs are usually pre-gapped. It is advisable to double check that the gap is correctly set to the vehicle’s recommended setting when installing spark plugs.
Are pre gapped spark plugs good?
Gapping the plugs to your engine’s specifications is important to prevent pre-ignition, detonation, fouling and poor fuel economy. Even if the preset gap matches that required by your engine, it is always good practice to physically check the gap as it may have shifted during transportation.
Should you lubricate spark plug threads?
NGK does not recommend the application of lubricant such as copper grease to spark plug threads as the result is a reduction of frictional forces at the thread faces. It’s very important not to over or under tighten spark plugs during installation. Over tightening can lead to distortion of the spark plug and breakage.
What happens if spark plug gap is too big?
If spark plugs are gapped too wide, the ignition spark loses some of its strength as it crosses the spark plug gaps. This can result in engine hesitation. An incorrect electrode gap may affect engine performance as the spark magnitude may be insufficient to ensure complete combustion of the air-fuel mixture.