Do AC Delco iridium plugs need to be gapped?
NOTE: ACDelco Professional Iridium Spark Plugs are pre-gapped during manufacturing. Never attempt to gap an ACDelco Professional Iridium Spark Plug.
Is AC Delco a good spark plug?
ACDelco Professional Conventional Spark Plugs are designed for reliability and efficient performance, and are the high quality replacement ideal for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance.
Can iridium spark plugs cause misfire?
With plug-related misfires, worn or improperly installed spark plugs make up the majority. Spark plugs may be one of the main causes of engine misfires, but with the use of iridium in the design of spark plug fine wire, it addresses misfires like never before.
How often should iridium spark plugs be changed?
There are two types of spark plugs: conventional and long-life. Conventional spark plugs need to be replaced every 30,000-50,000 miles. Long-life (iridium- or platinum-tipped) spark plugs need to be changed between 60,000 and 150,000 miles, depending on the vehicle.
Are iridium spark plugs better than platinum?
Iridium is said to be six times harder and eight times stronger than platinum with a 700° higher melting point. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. Thanks to its strength, iridium spark plugs can last up to 25% longer than comparable platinum spark plugs.
Are ACDelco Iridium plugs any good?
ACDelco Professional Iridium Spark Plugs are the high quality replacement ideal for many vehicles on the road today. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability.
Who makes ACDelco plugs?
|Headquarters||Grand Blanc, Michigan , U.S.|
How do heat range numbers work on AC Delco plugs?
Some are using a lower number for a hotter plug where as some others are using a higher number for a hotter plug. I am going to to stick with AC Delco and I would like to understand how their heat range numbering system works. The higher the number, the hotter the plug on AC delco’s. The higher the number, the hotter the plug on AC delco’s.
What does the prefix mean on spark plugs?
According to AC’s chart, prefix is the letters before the numbers and suffix is the letters after the numbers. That would make your recommended plugs a colder marine type plug designed for a boat engine.
What is the difference between a hotter and colder spark plug?
A hotter plug is for an engine that is lightly loaded or cruised. A colder plug is for heavy acceleration or hard use. Are you just curious about plugs, or do you have plans to change heat range on a modified engine? No, I am not just curious. The motor in my car calls for MR43T. The previous owner put R45T.
Do all spark plugs have the same heat range numbers?
Looks like all spark plug manufacturers does not follow the same convention. Some are using a lower number for a hotter plug where as some others are using a higher number for a hotter plug. I am going to to stick with AC Delco and I would like to understand how their heat range numbering system works.