A man is going viral on TikTok after showing how he says he saved himself hundreds of dollars on a car repair. User @exxtci says he was quoted $300 to replace the spark plugs on his $4,000 BMW. Instead of paying for the repair, the content creator, who regularly posts car-related videos, decided to try fixing it himself. The video is part of his "no dad, no problem" series, in which he documents his attempts to work on his car despite having no prior experience. After buying the parts, @exxtci opens the hood and tries to find the spark plugs and coil packs. He suggests he used ChatGPT to help guide him through at least part of the process. He manages to remove the coil packs, noting how "hot" it was under the hood, before moving on to the spark plugs. Following that, he replaces the necessary parts and reassembles everything. Despite completing the repair, @exxtci makes clear he’s not a trained mechanic. "I’ve never done this in my life," @exxtci says. He then films himself starting the car and gives his own review: "That’s all I needed to see," @exxtci says, after describing the startup as "smooth." He adds that fixing the car’s A/C is next on his list and encourages viewers with advice to reach out or leave suggestions in the comments section. As of this writing, the video has picked up more than 134,500 views, though some viewers questioned whether the repair was done correctly. Can I Repair My Spark Plugs And Coil Packs Myself? Replacing spark plugs and ignition coils seems to be one of the more approachable repairs for someone willing to learn, but it still takes some patience and the right tools. The most important part is taking your time. For safety purposes, spark plugs need to be threaded in carefully by hand before tightening. Rushing that step can damage the engine. You’ll also need a few specific tools to do the job properly. A spark plug socket, a ratchet, and a torque wrench are usually considered the basics. Some Redditors also claim to use dielectric grease on the coil packs and compressed air to clear out any dirt before removing the plugs. Working on a cool engine helps, too. Heat can make parts harder to handle and increase the risk of burns. For most cars, the process is pretty straightforward once you know where everything is. But some cars are tighter under the hood than others, making access more difficult. That’s part of why some drivers choose to do it themselves, while others seek professional help. The job is definitely doable for a beginner, but it still requires attention to detail. Viewers Question Man’s Spark Plug Repair Job While many commenters praised @exxtci for tackling the repair himself, some said the parts he used could cause issues down the line. "[You’re] gonna regret putting A-premium spark plugs and coils soon," one viewer warned. "Just compare the OEM spark plugs that you installed. OEM ones have 4 electrodes per piece for a reason." Another commenter pointed to a different brand, which they said would be a better choice. "[Put] NGK spark plugs in man not the A-premium," the person wrote, referring to two different parts brands. A third viewer said the engine itself leaves little room for error. "These engines are very sensitive," they wrote. "You’re going to want to put the OEM brand and style spark plugs, if not in a couple months, the misfires will start." Some people shared their own experiences using cheaper parts. "When I bought some off of eBay, installed them, it did just fine," one commenter wrote. "When I drive it, the car misfired really bad, and the transmission was slipping as well." Others took a more encouraging tone, saying the effort mattered even if the repair wasn’t perfect. "Keep it up, man!" one person wrote. "Nice job! Maybe just for next time, put a clean rag into the open holes when you’re away talking to the camera lol," another added. "That stressed me out, you leaving the cylinders open to the elements like that." Motor1 has reached out to @exxtci via a direct message on TikTok. We will update this story if he responds. We want your opinion! What would you like to see on Motor1.com? Take our 3 minute survey. - The Motor1.com Team