When I tried to lock the keys in the trunk, my old friend popped it back open. This is the best example of a consumer-friendly midsize sedan in our industry and the latest reminder that, at least Components of the i-VTEC system can be seen. The Honda K-series engine is a line of four-cylinder four-stroke car engine introduced in 2001. The K-series engines are equipped with DOHC valvetrains and use roller rockers on the cylinder head to reduce friction. The engines use a coil-on-plug, distributorless ignition system with a coil for each Step 2 - Open the hood. Locate the AC System and unscrew the low pressure plug. The owner's manual will direct you to the location of the AC system in your Honda Accord. The low pressure plug, will have the letter L embossed on it, remove that plug and set aside for reinsertion. Figure 2. 2021 Honda Accord. The race was close, but the 2021 Honda Accord bests its smaller sibling, the 2021 Honda Civic, in this matchup. The 2021 Honda Accord midsize sedan excels in delivering a more refined cabin, more comfortable seating, and more interior features. Its reliability and safety ratings are superior, too. Shop for new cars and used cars at Kelley Blue Book. Find and compare thousands of new, used, and CPO cars, and get the KBB Fair Purchase Price for the car you want to buy. VavU6o.