How long does it take to change spark plugs - May 5, 2019 · As good of a time as any. While plugs can usually go longer, I like changing them at 50K miles. At least pull one and see what condition it is in an that can help you make the decision.

 
If you’re an automotive enthusiast or a do-it-yourself mechanic, you’re probably familiar with the importance of spark plugs in maintaining the performance of your vehicle. When it.... How much does tint cost

Changed spark plugs will take about an hour (for a four-cylinder engine) and save you at least a hundred dollars in labor. You can use the same tune-up tools as before (ratchet, spark plug socket, and gap gauge). To tighten the plugs, you should use a torque wrench. But if you don’t have one, there’s a way around it.Here you see a socket wrench with a spark plug socket, a pair of spark plugs and a gap gauge tool. You'll need just a few tools to change out the spark plugs on your car. The most important tool is a socket wrench with an extension and a spark plug socket. Spark plug sockets come in two sizes: 5/8 inches and 13/16 inches.A new reversible USB plug is likely to hit the market next year. A new reversible USB plug is likely to hit the market next year. The next generation of USBs is currently being dev...With prices for spark plug replacement typically ranging from $32-$98, it won’t break the bank. Plus, with so many Auto Care Centers located in Walmart Supercenters across the nation, you’re never too far from a store. And best of all, the mechanics at Walmart are trained professionals ready to change your spark plugs and ensure your …Dec 4, 2007 ... level of difficulty: 1.25 out of 5 (5 being hardest) · approximate install time: less than 45 min (longer if take optional steps) · tools: ratchet&nbs...I will probably change mine at 60k (52k currently on my 5th gen) just for the fact that I don't like leaving plugs in an aluminum head that long. FWIW, I forgot to change the plugs on my 4th gen at 120k (30k intervals) and instead changed them at 150k. Even with 60k (twice the recommended mileage) the plugs looked brand new and unthreaded …Last week, I changed them on our 2015 Expedition at 88k miles. Wow! Brought it back to its former glory. It is also worth mentioning, replacing them on the 3.5 ecoboost V6 is so much easier than its predecessor, the 5.4 triton V8. There is nothing uneventful about changing plugs on a 5.4L or 4.6L, especially the # 6 and 8 plugs.Sign #1: Your car is hard-starting. If you are experiencing hard-starting, your spark plugs may not be working right. Hard starts or jerks that occur when you turn the ignition is a problem that needs professional attention. If not, it can lead to misfires or erratic performance of your Subaru.Let’s break down the process and explore the time commitment involved in this common maintenance task. When it comes to changing spark plugs and coils, the process can vary depending on your vehicle make and model, as well as your level of experience. However, on average, it typically takes between 1 to 3 hours to complete the job.Let’s break down the process and explore the time commitment involved in this common maintenance task. When it comes to changing spark plugs and coils, the process can vary depending on your vehicle make and model, as well as your level of experience. However, on average, it typically takes between 1 to 3 hours to complete the job.Don't unplug the wiring from the ecu, there's enough slack on the wiring that you can just squeeze it past the hose and move it toward the back of the engine. Remove the 10mm bolt and unclip the wiring from each of the coil packs and remove them. You can now remove the spark plugs.Mar 24, 2023 · The PCV valve should be replaced while replacing the spark plugs as it also has a 100,000 mile service interval. It's worthwhile to check the oil cooler housing (aka "oil filter adapter") for leaks. They have a very high failure rate and can leak both oil and coolant. You would also need to also remove the lower intake manifold to properly ... Generally, it takes about 2 hours to replace spark plugs on a V6 engine. However, it could take less time if the job is handled by a professional and if the location …3 days ago · Let’s find out. When changing spark plugs in a car, the process typically takes around 30 minutes to an hour, depending on your skill level and experience. With the right tools and a step-by-step approach, you can easily tackle this maintenance task yourself. Table Of Contents show. Step 3 – Gap the new plugs. Use the gapping tool to ensure the new plugs are within spec. For the Silverado, you want either .040" or .060" gap depending on the model. Check your owner's manual to get the correct number for your truck. If the gaps are off, gently bend the ground on the plug until they are within spec.Apr 17, 2019 · spark plugs are likely priced in the 1 hour labor range. 18nm torque. 0.5-0.6mm gap, the old plugs should be at about that as well. service doesn't state to use or not use anti seize. haven't encountered issues removing old plugs, but have encountered spark plugs loosening themselves. i personally would not recommend antiseize. As technology continues to advance, spark drivers have become an essential component in various industries. These devices play a crucial role in generating the necessary electrical...Step 4: Remove the spark plugs. Take the spark plug socket that fits your plugs and put it down over the plug, making sure it is fully seated as far down as possible. Loosen the plug by turning it counter-clockwise, and try to keep the socket as straight up and down as possible in relation to the plug. If your socket gets out of alignment, it ...When to replace spark plugs. Jump to Latest Follow 18K views 25 replies 14 participants last post by StillRollin May 10, 2019. Coldman87 Discussion starter 122 posts · Joined 2019 Add to quote; Only show this user #1 · May 5, 2019. 2012 Silverado with the 5.3 71,000 miles, good idea to replace the plugs now? ...This is a full tutorial on how to replace all four spark plugs on a Ford Edge 2.0L 2015-2023. I have show you exactly how to replace every single plug on thi...A general guideline is to replace spark plugs every 60,000 to 100,000 miles (96,000 to 160,000 kilometers). ... How Long Do Ngk Spark Plugs Last? NGK spark plugs are known for their durability and performance. Commonly, NGK spark plugs can last 60,000 to 100,000 miles or more. These numbers vary depending on the quality of …Mar 15, 2021 ... Different manufacturers use different kinds of spark plugs This video is sponsored by Autolite Underhood Service: ...Use a wire brush or compressed air to clean up around the wire connections and make sure you've got a good, clean port. Replace the wires if necessary. [9] 3. Insert the new plugs and tighten with your ratchet. Using the spark-plug socket, remove each plug from the engine, and replace each with a new spark plug.The average price of a 2016 Jeep Wrangler spark plug replacement can vary depending on location. Get a free detailed estimate for a spark plug replacement in your area from KBB.com.Replacing the spark plugs in a Chevy Impala takes approximately 30 minutes to complete. Pull the hood release, lift the hood and slide the hood brace into place. Allow the Chevy Impala engine to cool for at least 30 minutes after turning it off. Locate the spark plug wires. On Chevy Impala models, they are on the sides of the engine.You should change, all together at the same time, the spark plugs & the coil packs. Also remember to look up the “gap” for the spark plugs. (Many cars are around 0.40mm - 0.44mm).Thanks all, replaced the 6 plugs today with only a brief minute of 'oh crap' when I had trouble getting the extension of the ratchet off the spark plug socket on one of the rear plugs.....little tap of a hammer on the edge did the trick and fished it out with a shorter extension.Mar 15, 2021 ... Different manufacturers use different kinds of spark plugs This video is sponsored by Autolite Underhood Service: ...Step 3 – Remove (and replace) coil. Remove the wiring harness from the coil to be removed by pressing the tab and wiggling the connector free. Using the 6mm Allen wrench, loosen then remove the Allen head bolt attaching the coil to the head. Slightly twist and pull the coil to remove it from the head.Mar 4, 2016 · Step 2 – Remove spark plug wires. The spark plug wires are connected to the spark plugs on one end, and to the coil packs on the other end. Wiggle the wire left and right as you pull it away from the coil pack, then do the same for each spark plug to remove all the wires. Figure 2. Wire to coil pack. How do mechanics replace spark plugs? Spark plugs are threaded into the engine’s cylinder head(s). Most cars have one plug per cylinder, so a four-cylinder engine will have four plugs, a six-cylinder engine will have six plugs, and so forth. The mechanic will: Have the correct spark plugs on hand for your vehicle ; Pull …The typically recommended mileage for changing spark plugs is every 30,000 – 60,000 miles, while extended life spark plugs can go as far as 120,000 miles. It’s important to consult your owner’s manual to determine the ideal interval for changing spark plugs. And if that goes missing, you can get your mechanic’s help to figure …Step 2 – Remove spark plug wires. The spark plug wires are connected to the spark plugs on one end, and to the coil packs on the other end. Wiggle the wire left and right as you pull it away from the coil pack, then do the same for each spark plug to remove all the wires. Figure 2. Wire to coil pack.That cover keeps cosmic debris from entering cylinders and messing up ignition pattern. If you want to approach this issue with parts gun you will need 6 coils, 12 spark plugs, 12 ignition wires.:wink. 1972 280SEL 4.5 108.068. 1999 ML320 163.154. 2000 E320 210.065.Introduction. Changing spark plugs takes about an hour (for a four-cylinder engine) and will save you at least a hundred bucks in labor if you do it yourself. In most cases it's a simple job that will help to …The components are easy to open and access the spark plugs; hence, they will take around 1 hour. It will take longer if you have a more complex one like a transverse …Ford advises to change the plugs at 100,000 miles on an F-150, Explorer and other models under “normal” driving conditions. If a vehicle frequently tows a trailer …When it comes to maximizing engine performance, one crucial aspect that often gets overlooked is the spark plug gap. A spark plug gap chart is a valuable tool that helps determine ...Photoshop, Adobe's graphics design and photo manipulation computer software, supports user-made plug-ins to expand the program's functionality. These plug-ins can be shared on Adob...Nov 17, 2015 · Using a 3/8" drive ratchet with an extension, universal joint adapter, and 5/8" spark plug socket, remove the spark plugs. Figure 3. A long extension and universal joint allows for easy reach of the spark plugs. With the old spark plugs removed, prep the new spark plugs by checking the electrode gap with a gapping tool or feeler gauge. Shop for New Auto Parts at 1AAuto.com http://1aau.to/c/243/aj/spark-plugsSpark plugs set off the combustion that makes your vehicle's engine go. Old dirty, w...Ordinarily, it will take about an hour to change the engine’s spark plugs if it has only four cylinders. Changing spark plugs, in most cases, is just a simple task that will enable …Reviews, rates, fees, and rewards details for The Capital One Spark Cash Select for Excellent Credit. Compare to other cards and apply online in seconds $500 Cash Back once you spe...Tighten to 18 Nm (159 lb-in). Lower spark plugs. Connect the ignition wire to the lower spark plugs. Upper spark plugs. Install the ignition coil-on-plugs. For additional information, refer to Ignition Coil-On-Plug in this section. Reply Like. # …Kathryn Mae Kurlychek · Updated on Apr 28, 2022. Reviewed by Shannon Martin, Licensed Insurance Agent. Fortunately, spark plugs only take about an hour to …Average is perfect with hurdles like stuck spark plugs, limited space to remove the spark plug, etc. 1 hour to 2 hours. Worst-Case Scenario. Worst case as a result of the damaged spark plug, worn spark plug thread, damaged cylinder head, and many more. 2 hours until you are done changing the spark plugs.When it comes to changing the spark plugs on a 5.7 Hemi engine, it typically takes about 2-3 hours for someone with basic mechanical skills. This time frame includes gathering the necessary tools, removing the old spark plugs, installing the new ones, and testing the engine to ensure everything is running smoothly.Here is a video tutorial on how to replace the spark plugs without breaking any off in the head for a 5.4 V8. This guide will work any Ford with a 5.4L V8. W...QC3.0 Dual USB Power Socket, Quick Charge Car Charger USB Adapter for Smart Phone PDA iPad iPhone Android GPS Use for Toyota. $17.98. TQPONLY Automatic Gear Shift Knob Compatible with 2012-2023 Toyota 4Runner TRD Pro,2014-2021 Tundra TRD Pro Accessories Replaces PTR57-34141-02.Photo by – twstatic. The best time to change your spark plugs on your Tacoma is every 30,000 miles. However, if you notice your Tacoma’s performance declining, you may need to change them sooner. If your spark plug, coil pack, or spark plug wires are out of commission or out of alignment, your …48,000 miles/48 mos oil and filter change, rotate tires, cabin air filter 60,000 miles/60 mos repeat 30,000 service, replace spark plugs/wires 90,000 miles/90 mos service with complete fluid, filter change. Inspect all hoses, belts 120,000 miles/120 mos repeat 30,000 service, replace spark plugs 137,500 miles replace Super Coolant … The average cost for a Chevrolet Traverse Spark Plug Replacement is between $309 and $366. Labor costs are estimated between $215 and $271 while parts are priced between $94 and $95. This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed. Learn how to change the spark plugs and wires in a C4 Corvette with an LT1 or LT4 from 1992 through 1996. This is a job the every day person can do and save ...Feb 6, 2024 · Front and rear differential service cost $329.95. Transfer case cost $199.95. Transmission service if it's a standard it would be $229.95 if it an automatic it would be $299.95. Spark plug service if it's a 6 cylinder would be $635.00. Mar 15, 2021 ... Different manufacturers use different kinds of spark plugs This video is sponsored by Autolite Underhood Service: ...Step 2 – Disconnect the ignition wire. To do this job most efficiently, it's best to replace both the ignition wires and plugs one at a time. First, trace the ignition wire from the distributor cap to the spark plug boot, paying close attention to the routing and any clips that may hold the wire in place. Undo the clips shown in Figure 2, and ...Dealer will cost more for sure, just based upon retail hourly rate. You know you'll be getting good plugs and you'll have Subaru specific technicians. Independent shop - lower retail hourly rate, less vehicle specific knowledge, possibly lower quality plugs... In either case, it's a difficult job because where the plugs …Break the spark plugs loose when the engine is warm.2. Turn each plug 1/8 to 1/4 turn and soak the treads with 1/2 to 3/4 teaspoon of Motorcraft Carburetor Tune-Up Cleaner or a quality penetrating oil. Do not try to remove the plugs at this time.3. Let the threads soak for at least 15 minutes.4.Apr 17, 2019 · spark plugs are likely priced in the 1 hour labor range. 18nm torque. 0.5-0.6mm gap, the old plugs should be at about that as well. service doesn't state to use or not use anti seize. haven't encountered issues removing old plugs, but have encountered spark plugs loosening themselves. i personally would not recommend antiseize. Reviews, rates, fees, and rewards details for The Capital One Spark Cash Plus. Compare to other cards and apply online in seconds Info about Capital One Spark Cash Plus has been co...Dec 20, 2003 · Next the coil packs go back on. Slide the boot portion over the spark plug, gently snugging it on- you'll feel it going on. Once properly on, tighen the coil pack bolt to 12 ft lbs- again a torque wrench won't likley fit so go careful- 12 ft lbs is not that much. Next reconnect the connectors to the coil packs. As some of you guys know, I've been running a Livernois tune (91 tow & 91 perf) on my 2.7 since around 10k miles. I'm just about to roll 28k and decided to change the plugs to get a baseline on how they look. Also IIRC, Livernois recommends changing the plugs at 30k. The new plugs were all gapped to 0.028 out of the box (Motorcraft SP542 ...It takes at least an hour to replace a spark plug on a four-cylinder engine, as opposed to a six-cylinder or V8 engine, which could take twice as long. In a 4 -cylinder engine, the most time-consuming activity when changing spark plugs is taking off the intake cover and replacing the filter.Changing out the spark plugs after 135,000 miles on my 2017 Chevrolet Silverado.Spark Plugs: 41-114 AC DelcoDi-Electric Grease: LB 8423 LoctiteStep 1 - Preparation. Locate your spark plugs under the bonnet using your owner’s manual. They will usually be either on the top or side of the engine. Before attempting any work, remove any loose dirt and debris from around the spark plugs, and remove any obstacles that prevent access to the spark plugs.Next the coil packs go back on. Slide the boot portion over the spark plug, gently snugging it on- you'll feel it going on. Once properly on, tighen the coil pack bolt to 12 ft lbs- again a torque wrench won't likley fit so go careful- 12 ft lbs is not that much. Next reconnect the connectors to the coil packs.Step 1 - Preparation. Locate your spark plugs under the bonnet using your owner’s manual. They will usually be either on the top or side of the engine. Before attempting any work, remove any loose dirt and debris from around the spark plugs, and remove any obstacles that prevent access to the spark plugs.Jan 31, 2024 · How long does it take to replace spark plugs? It takes about 1.3 hours for a certified mechanic to replace your spark plugs. Make sure you call ahead, in case the mechanic doesn’t have your model’s spark plugs in the shop. May 5, 2019 · As good of a time as any. While plugs can usually go longer, I like changing them at 50K miles. At least pull one and see what condition it is in an that can help you make the decision. Aug 31, 2017 · As some of you guys know, I've been running a Livernois tune (91 tow & 91 perf) on my 2.7 since around 10k miles. I'm just about to roll 28k and decided to change the plugs to get a baseline on how they look. Also IIRC, Livernois recommends changing the plugs at 30k. The new plugs were all gapped to 0.028 out of the box (Motorcraft SP542 ... a spark plug socket of the correct size, driver and a driver extension. A small screw driver to release the tab on the coils and a large screw driver to pry up the coils would also be helpful. I also would recommend a little anti seize on the spark plug threads. Just be careful not to get any on the conductor.Changing out your spark plugs should have absolutely no bearing on your fuel mileage, drivability or idle unless there was something WRONG before you did the change. Don't be fooled by the hype of other types of plugs - E3, double-tipped, tri-tipped... blah blah. They apply a spark that ignites the air/fuel mixture.Don't unplug the wiring from the ecu, there's enough slack on the wiring that you can just squeeze it past the hose and move it toward the back of the engine. Remove the 10mm bolt and unclip the wiring from each of the coil packs and remove them. You can now remove the spark plugs.Worn or damaged valve guides, worn or damaged piston rings, rich fuel mixture and a leaky head gasket can all be causes of spark plugs fouling. An improperly performing ignition sy...Plug and Play is a simple Windows controller that enables your Windows computer to recognize and adjust to hardware changes and devices plugged on your computer such as hard drives...Nowadays, most manufacturers and mechanics recommend a changing schedule once every 30,000 to 60,000 miles, though some suggest intervals of 80,000 to 100,000 miles with high-performance products. Being informed, regular inspection and maintenance, and knowing when to change your plugs …The long requested spark plug change video is here! In this video we change the spark plugs on Cliff's 2014 Silverado with the 5.3L EcoTec3 L83 V8 motor. The...Here's what you should know before you attempt to replace spark plugs on your own. 1 / 4. Photo: Shutterstock. Why Replace Your Spark Plugs? Spark plugs are the heart of your vehicle’s engine. For maximum fuel economy and peak engine performance, your spark plugs should be replaced every 30 months or 48,000 …Im assuming since your using 1 step colder that your car is atleast stage 2. I would say change plugs every 25-30K. Thanks for the info guys. I'm planning to get a protune next month, so I'll just change them out to be safe. I am stage 2. If you can man let us know how your plugs look when you change them.How Long Do Spark Plugs Last? In any car care matter, it's always best to follow the Manufacturer Suggested Maintenance Schedule. Review your vehicle's suggested maintenance schedule to see when to replace your spark plugs. Luckily, spark plugs don’t wear out very quickly. You can typically get …A spark plug provides a flash of electricity through your car’s ignition system to power it up. When they go bad, your car won’t start. Even if they’re faulty, your engine loses po...The maintenance schedule calls for spark plugs every 40K miles, which seems overkill, no?!? ... I'd rather be replacing and inspecting my plugs every 10k miles. How long does it take--half an hour? ... There's absolutely zero reason whatsoever to follow VW's recommendations to replace their Platinum plugs at 40,000 Miles. …Apr 29, 2022 · Cost at the Mechanic: $191-$250. Parts: $66-$91. Labor: $126-$158. Replacing the spark plugs on a vehicle is a maintenance item that usually takes between one and four hours to complete, depending on the vehicle and if other repairs are needed. This service should be completed about every 30,000 miles, or as specified by your owner’s manual. Generally, spark plugs should be replaced every 30,000 to 100,000 miles, depending on the manufacturer’s recommendations for your specific vehicle. Some spark plugs may need to be replaced more frequently if they are subjected to extreme conditions, such as high temperatures or extended periods of idling. 985 posts · Joined 2015. #1 · Nov 12, 2016. Why - just felt like doing it. Time - about 30 minutes. Tips - remove intercooler pipe from turbo side and disconnect a few hoses. Tools - torque wrenches, 10, 12, and 14 mm wrenches and sockets, extensions, and a magnetic pick-up tool. Reference - factory service manual (if have not used it yet ...Install each spark plug into the cylinder heads without using any anti-seize compound. Torque the spark plugs to 30 Nm (22 ft-lbs). I recently learned that Porsche published a bulletin indicating that it doesn't recommend using anti-seize compound on spark plugs for any of their engines (Porsche Technical Bulletin 9102, Group 2 identifier …You should change, all together at the same time, the spark plugs & the coil packs. Also remember to look up the “gap” for the spark plugs. (Many cars are around 0.40mm - 0.44mm).

There is no specific time to change spark plug wires but an ideal time would be when fuel is being left unburned because there is not enough voltage to burn the fuel. As spark plug.... Grey anatomy season 11

how long does it take to change spark plugs

Apr 29, 2022 · Cost at the Mechanic: $191-$250. Parts: $66-$91. Labor: $126-$158. Replacing the spark plugs on a vehicle is a maintenance item that usually takes between one and four hours to complete, depending on the vehicle and if other repairs are needed. This service should be completed about every 30,000 miles, or as specified by your owner’s manual. The first step of the Hemi Ram spark plug change project is to remove the engine air intake system and get all of that out of your way. On the 2009 and newer models, the throttle body is at the front of the engine bay while on the pre-2009 Hemi engines, the throttle body is located back near the firewall. In either case, you want to clear some ...QC3.0 Dual USB Power Socket, Quick Charge Car Charger USB Adapter for Smart Phone PDA iPad iPhone Android GPS Use for Toyota. $17.98. TQPONLY Automatic Gear Shift Knob Compatible with 2012-2023 Toyota 4Runner TRD Pro,2014-2021 Tundra TRD Pro Accessories Replaces PTR57-34141-02.QR25DE: Always replace spark plugs with recommended ones. VQ35DE: Always replace spark plugs with recommended or equivalent ones. WARNING. Be sure the engine and ignition switch are off and that the parking brake is engaged securely. CAUTION. Be sure to use the correct socket to remove the spark plugs. An incorrect socket can damage the …QR25DE: Always replace spark plugs with recommended ones. VQ35DE: Always replace spark plugs with recommended or equivalent ones. WARNING. Be sure the engine and ignition switch are off and that the parking brake is engaged securely. CAUTION. Be sure to use the correct socket to remove the spark plugs. An incorrect socket can damage the …How do mechanics replace spark plugs? Spark plugs are threaded into the engine’s cylinder head(s). Most cars have one plug per cylinder, so a four-cylinder engine will have four plugs, a six-cylinder engine will have six plugs, and so forth. The mechanic will: Have the correct spark plugs on hand for your vehicle ; Pull …Maybe go across town to a busy gas station and buy a few gallons of 91 octane and run it on your next outing. At 1900 miles, I would replace the plugs anyway. If for no other reason, to be certain the plugs don't weld themselves to the aluminum heads over time. Like. R.Figure 5. Spark plug gap being measured. Step 4 – Re-install spark plugs into the engine. Insert the plugs into the engine by placing them into the spark plug socket. Begin by finger tightening, so the threads are protected. Tighten the plug to the recommended torque specification. Do not over tighten as you may damage the plug, the …This is a full tutorial on how to replace all four spark plugs on a Ford Edge 2.0L 2015-2023. I have show you exactly how to replace every single plug on thi...Just to replace the spark plugs is going to require about 2.5 hours to remove the upper intake manifold and all the coils to access the spark plugs. If doing the job for a misfire then be prepared to replace oil soaked coils and coil boots along with the valve covers that are leaking oil into the spark plug holes. The average price of a 2016 Jeep Wrangler spark plug replacement can vary depending on location. Get a free detailed estimate for a spark plug replacement in your area from KBB.com. Generally, spark plugs should be replaced every 30,000 to 100,000 miles, depending on the manufacturer’s recommendations for your specific vehicle. Some spark plugs may need to be replaced more frequently if they are subjected to extreme conditions, such as high temperatures or extended periods of idling. Using a 3/8" drive ratchet with an extension, universal joint adapter, and 5/8" spark plug socket, remove the spark plugs. Figure 3. A long extension and universal joint allows for easy reach of the spark plugs. With the old spark plugs removed, prep the new spark plugs by checking the electrode gap with a gapping tool or feeler gauge.The same thing is true when changing the spark plugs of an 8-cylinder engine. Changing the spark plugs of a V6 engine will take about two hours. Generally, if you have a front-wheel drive vehicle, completing the task will be much faster. For example, A Ford vehicle with a V6 engine has a straightforward construction.Just to replace the spark plugs is going to require about 2.5 hours to remove the upper intake manifold and all the coils to access the spark plugs. If doing the job for a misfire then be prepared to replace oil soaked coils and coil boots along with the valve covers that are leaking oil into the spark plug holes.Here's what you should know before you attempt to replace spark plugs on your own. 1 / 4. Photo: Shutterstock. Why Replace Your Spark Plugs? Spark plugs are the heart of your vehicle’s engine. For maximum fuel economy and peak engine performance, your spark plugs should be replaced every 30 months or 48,000 ….

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