The Cheapest, Most Reliable Mercedes-AMG Cars Ever, Period! The outer panel is secured to the car with twenty 8mm bolts. Set aside at least two days to give yourself ample time to do everything correctly and double-check your work. For BMW 428I GRAN COUPE 428i XDrive 2.0L TURBOCHARGED 2.0L Replacement Timing Chain Kit. But if you drive a 2011-2017 BMW 1-3 series, there's a good chance it does. Using a twelve-point 14mm socket, remove the spark plugs from the cylinder head. Next, slide the wastegate actuator through its mounting bracket and secure it with its three 10mm nuts. The timing chain guides, as their name suggests, keep the chain on its proper path at the proper tension. The smallest part of the brace is held in with six 10mm bolts. Pull up on the pins to release them and push down on the intake pipe to separate it from the airbox. There's gotta be some with 200k right? This harness will swing around the front of the engine, with its bracket clipping onto the valve cover on either side of the high-pressure fuel pump. Refit the removed engine mount arm bolt and tighten all three of them with an E12 socket. All of the gaskets go on one way, so be sure that they are all in the proper orientation. Thread the smallest cap into the hole just under the driver's side camshaft. On these two motors, the N20 and N26 Timing Chain . Have plenty of rags ready when threading the tensioner out by hand, it is oil fed and will leak oil upon removal. Next, loosen the fuel lines from the injectors with a 17mm wrench. Step 15: Install the camshaft timing adjusters, boost control solenoid, and vacuum pump, Step 17: Install the backside wiring harness, Step 18: Refit the ignition and fuel injector harness, Step 21: Reinstall the cowl brace and trim, Step 22: Install the engine foam and cover. For a better experience, please enable JavaScript in your browser before proceeding. If the chain hasnt stretched, then something has happened to the guides. Check these out to see just how in-depth we go to make them. 2,357.00 inc vat (Including Automatic Transmission Fluid & Filter, as this is part of the complete repair) BMW 44 xDrive models are an extra 300 of the above prices to remove the extra transfer case & front differential as part of the repair. 3 ratings. Thread them in by hand, so they don't become cross-threaded and tighten them to 10 N m with a T30 socket. BMW N20 engine repair because of timing chain failure. var fname = document.getElementById("name_fs"); It turns out a simple process issued by BMW is the fix. Then thread in the new oil pump sprocket bolt by hand before tightening to 95 N m with a T60 socket. I know its apples to oranges, bringing in the Audi issue, but I thought it was relevant. gmltheme: 1, // Change theme here (1,2,3) Use some brake clean or a degreaser and a rag to wipe down the area where the oil pan seals to the engine. Read up on each generation and find out which one fits you best. Grab your keys, head into the car, and turn the engine over with the starter to build oil pressure in the engine. Reinstall the M6 10mm bolt into the oil pickup and tighten it to 10 N m. Lastly, wiggle the flywheel locking pin out of the transmission and reinsert the plug. 287 0 obj <> endobj When removing the panel, be careful not to get covered in the dirt and debris that may fall out of it. Thread the new bolt supplied in the timing chain kit into the crankshaft and tighten it with a 22mm socket. Disconnect the large line coming off of it and then use a short T30 socket to remove the three bolts mounting it to the head. Replacing the BMW N20 timing chains and their guides is not for the faint of heart. A lobe on the exhaust camshaft interacts with the high-pressure fuel pump to send fuel into the engine. :1 3dXfz1FF7s/3$ 6 @$*i` There are two long bolts supplied with the tool. Tighten the oil filter cap to 25 N m when reinstalling it. Factoring in the cost of the tools with the parts brings the DIY bill to nearly $1200. Near the back of the engine are two grey rectangular plugs for the oxygen sensors. Four large E20 bolts mount the strut brace to the car, one on each strut tower and two against the firewall. Pull the belt off of one of the pulleys and release the pressure on the tensioner. Disconnect the wiring from both of them. The Fora platform includes forum software by XenForo. A belt or chain skipping a tooth can cause the valves to hit the pistons, destroying the engine. A timing chain will stretch over time. The timing chain guides, as their name suggests, keep the chain on its proper path at the proper tension. Luckily, the valves do not smash into the piston and destroy the engine (non interference). @import url("/site/css/styles-bryson-2023-03-06.css"); In January 2015, BMW redesigned the timing chain components, which seems to have significantly reduced the chance of failure. Lastly, plug the small two-pin connectors into the fuel injectors. Sit the pump-to-rail feed line in its clip and start threading in the two mounting bolts. Slide the front of the pan under the bumper and thread in one of the fasteners. The N20 and N26 engines are known to have a problem with the timing chain and guides that were originally installed at the factory. Next, grab the large green CTA timing tool and set it in front of the camshafts. Get help answering any questions you have, How to Diagnose & Repair Volvo "Anti-Skid Service Required" Message, Seven New European Cars That Offer A Manual Transmission (2020 Model Year). Surely there is a reason why BMW has used at least three different models of this part. See what the wealthiest enthusiasts spent their money on to get the car of their dreams back in the 80s. Take the fuel rail and situate it on the valve cover. Is it something that can be done in the garage? To remove it, use a 22mm socket on the longest breaker bar you have. Rotate the balance shaft slightly until the bolt slips in if it doesnt right away. If you're interested in more DIYs for your BMW, you can visit, How to Diagnose & Repair Volvo "Anti-Skid Service Required" Message, Seven New European Cars That Offer A Manual Transmission (2020 Model Year). Tools required to service the timing chain system on the BMW N20/N26: Parts required to service the timing chain system on the BMW N20/N26: Steps for reassembling the BMW N20/N26 timing chain assembly: Step 1: Assemble the new timing chain assembly, Step 2: Install the oil pump drive assembly, Step 4: Install the timing chain assembly, Step 7: Install the timing chain guide pin plugs, Step 10: Install the new timing chain tensioner. Lastly, pull the four ignition coils out from the engine. Use a T40 bit socket to tighten down the bolts. Timing chain tensioner: is it worth replacing as preventative for high mileage N20? The BMW X5 is a stylish choice for your next family and race car hauler. Next, install the CTA balance shaft locking tool used to lock down the sprocket. A forum community dedicated to BMW owners and enthusiasts. And I assume "newer is better." Cost at the Mechanic: $1,624 to $1,879. There are two plastic rivets, one on each corner of the cowl. Then, install the rubber gaskets into the valve cover. Thread two of the vibration dampener bolts into the mount and pull on them, wiggling it off of the crank snout. The cost will get higher if you have to buy any of the other tools needed for the job. Remove the old crankcase vent line o-ring and replace it with the one supplied in the kit. There are twenty-two (22) E8 bolts that secure the oil pan to the engine. Use a socket to remove them and set the brace aside. Next, plug in the high-pressure fuel pump and the boost control solenoid. Bn )ve $` However, the timing chain is one of the major parts that will be affected. Use these marks to make sure everything lines up after the engine turns over. The good news is that BMW recognized the timing chain components in the N20 and N26 engines were prone to failure. The job itself requires three special tools specific to this engine. Here are some of our favorites from Europe. Have fun with that install haha. The forward-most corner will also fit into a rubber mounting grommet. HOW TO KNOW IF MY BMW WILL NEED TIMING CHAIN REPLACEMENT BMW F10 F11In this video we will explain if you have BMW F10 F11 5 Series how to know if your car is. The issue is with the timing chain tensioner. The cost will get higher if you have to buy any of the other tools needed for the job. The circular cutout in the ears will line up with a circular raised portion on the other guide. Use the parking brake to prevent the car wheels from rolling. As it stretches, the chain gains play, allowing it to move around inside the timing cover. . Including fluids replacement. There are two clips holding the cowl on, on either side of the engine bay. Remove them and pull the fuel rail off of the engine. A BMW N20 timing chain replacement can cost between $1000 and $5000 depending on the severity of the problem. Before fitting the camshaft timing adjuster to the valve cover, wipe some fresh oil around their o-rings. The guide is made of a faulty material that degrades much quicker than expected. .SQ2!2%c2b:EYsTtJXrsc~;a^I\_m(AY>.nnK[],(FZ7Sx/91H%H)i. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Two of those bolts look slightly different and have specific locations as they thread into the crankcase. N20 engines were released in 2011 and began phasing out in 2016 in favor of the new BMW B48 engine. To do that, do what you would do to normally start the car. Use a 22mm socket to rotate the pulley to give yourself better access to the bolts. Table of Contents show. Use the old assembly as a guide. I've got to figure there's a reason why they changed it. Rotate the crankshaft until the piston is at the top of its stroke, meaning the rod is pushed out as far as it will go, and neither camshaft is opening valves on the first cylinder. Some models with the N20 were recalled while others fall under an extended warranty. Labor: $957 to $1,207. Next up is the fuel rail plug. 9!#!_:O`K~ K} ? Release the hold on the tensioner once all of the ribs in the belt are sitting in their grooves. According to BMWs statement on it and reports of those with bricked engines, it appears to be the plastic guide wearing down too quickly leading to slack and eventually skipping a tooth. Part of the reason Im so interested in learning about this platform. According to the timing. Towards the rear of the oil pan, on the drivers side is the oil level sensor. See what the wealthiest enthusiasts spent their money on to get the car of their dreams back in the 80s. Lastly, remove the two E8 bolts in the center of the middle guide. The timing chain guides can now be loosened with everything else out of the way. The locking pin with the yellow cord attached to it should slide into the space that the plug occupied if the car is at top dead center. There are three bolts holding the oil pump drive assembly into the engine. Underneath the plastic engine cover, is a foam noise-reduction pad. Slide the intake cam sprocket onto the cam and work the chain onto the teeth. The issue is still fairly rare, and it's not too terribly likely you'll be affected. Once it is secured, spin the camshaft adjusters until the holes in them line up with the pins in the timing tool. Remove the bolts and slide the panel forward to remove it. Tightening this bolt will thread it up into a small lever coming out from the transmission. When you do find it, pull it out in the direction of the loop. Use an 8mm socket to remove the grounds. Horizontally opposed views, only. Here are some of our favorites from Europe. hbspt.cta._relativeUrls=true;hbspt.cta.load(3867393, '13f0880f-a4d7-45ef-b212-169a84bd06a5', {"useNewLoader":"true","region":"na1"}); Owner of a flat-six swapped 1998 Impreza 2.5RS and a 1973 Porsche 914. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Clean the camshaft angle sensors of any metallic shavings and reinsert them into the timing cover. if(document.body.contains(fname)) { At the back of the cylinder head, nearly up against the firewall, is a vacuum pump. For those capable or bold enough to take on this job, there is a lot of monetary savings to be had. Definitely doable but would take a day or two depending on experience: The guide is made of a faulty material that degrades much quicker than expected. Leave the solenoid attached to the actuator; it will mount to the valve cover. Set the bolts in a safe location after removal as they will be reused. Missing something during reassembly will only cost more time and headaches. The exhaust cam sprocket is now taking up a large portion of the slack in the chain, allowing the vibration dampener mount to be installed onto the snout of the crankshaft. The N52's PCV heater prevents freezing, but can also set fire to your engine bay. Audi had/s a similar but more prevalent problem with the timing chain systems on the 4.2L engines, and in those cases, it's always the guide that breaks. Then clip the harness onto the bracket behind the engine. Slide the cam adjusters into the cam sprocket and thread them on by hand. They will go through the tool and thread into the cylinder head, locking the tool into place. The Fora platform includes forum software by XenForo. The fuel rail is secured to the valve cover via four E8 fasteners. Steps required to remove the BMW N20 timing chain: Step 1: Put the car into neutral The engine needs to be able to rotate freely by hand to remove the timing chain and its associated components. Tighten all of the bolts to 12 N m. A pair of transmission lines need to be reattached to the oil pan. Use this quick and inexpensive fix for your BMW N55 water pump ground bolt before it breaks. 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Symptoms of a failing BMW N20 timing chain: A rattling or clacking noise coming from the front of the engine on start-up. Next, refit the two-piece lower cowl. A timing chain will stretch over time. Find many great new & used options and get the best deals for OEM Timing Chain Kit & Oil Pump Drive Chain set For BMW N20 N26 2.0L F10 F22 F30 at the best online prices at eBay! They've gone through like five variants of all those parts apparently. Take a 16mm socket and rotate the ratchet to the right to pull the tensioner back. The new timing chain won't have any play in its length, making the cam sprocket installation a bit tricky. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! There are a lot of small pieces that need to be removed and unclipped before getting into the heart of the timing system. Only tighten the bolts and pins finger tight. Missing something during reassembly will only cost more time and headaches. Next, compress the chain tensioner and use the pin provided in the tool kit or an Allen wrench to lock the tensioner and guide out of the way. couponTxt: "CouponTxt", // offer text m8$`f$k3B&84vR~lAjD? I check mine every 1k or so for a whine and to check the slack. The wiring harness from both of these plugs is clipped into the valve cover, below, and to the left of the fuel pump. defaulttext:"DefaultText", // bottom of popin message endstream endobj 288 0 obj <> endobj 289 0 obj <>/Rotate 0/Type/Page>> endobj 290 0 obj <>stream Slide the engine cover over the foam and into the two slots at the back of the engine. Feed the assembly up through the bottom on the engine and fit the balance shaft gear onto the balance shaft. Use an 8mm socket to secure the three 8mm fasteners at the front of the cover. The thickest part of the bracket will go towards the passenger's side of the engine. The BMW N20 timing chain is replaced because it wears out quickly for the following reasons: The tensioner has deteriorated, as a result, the timing chain of the BMW N20 does not stretch well, slips, and the valve timing is disturbed. Flip-up the lock on the plug, and connect the harness to the coil, then lock them once connected. In the middle of nowhere without cell service? On the front of the timing chain cover under each camshaft sprocket, are the camshaft angle sensors. Use a jack on the transmission to lift the engine up and towards the passengers side to wiggle the pan out. Starting with the airbox, loosen the intake pipe clamp on the backside of the airbox with a flat-head screwdriver. With the engine filled with oil, refit the negative cable onto the battery, but don't tighten it down. Slip the drive onto the camshaft and then feel around with the bolts until you locate the threaded holes and can secure the pump to the cylinder head. Head into the trunk and locate the battery. The new timing chain assembly is shipped unassembled and needs to be snapped together before being installed. Use an E12 socket to torque them to 9 N m. To be extra careful, tighten them all halfway before starting the pattern over again and setting the final torque value. Using a 16mm socket, remove the windshield wiper arms. The timing chain appears to be the number one fault on the N20, however, this issue is mostly prevalent on engines and vehicles produced prior to 2015. Tighten them to 5.5 N m. Plug the actuators in once they are torqued down. The large breather hose that runs between the camshafts needs to be disconnected from the cylinder head. Posted on August 7, 2016 by bmwtechnician. Grip the front of the engine cover and pull up to pop it off of the front locating pins. The labor alone will be between 10-15 hours, causing the cost of the job to be upwards of $5000. The tensioner keeps the timing chain tight and in place as the engine runs. The driver's side cover will have one extra push clip, just on the inside of the strut tower. Next, fit the new oil pan seal into the channel in the oil pan. It is nearly impossible to get a look at it with a camera, so youll need to feel around until you find it. Then, before connecting anything else, fill the engine with oil, and change the filter. This motor is in just about all GM vehicles and product lines currently, no exaggeration. Engine Timing Chain Tensioner, Engine Timing Cover Plugs, Engine Crankshaft Pulley Hub Bolt, Oil Pump Sprocket Bolt, Vacuum Pump . Eventually it breaks, taking your whole engine with it. When it starts to move, put one hand in the engine to keep the pressure on the rail as you back out the tensioner tool with the other. These 5 come in under $10,000. Then, spread the ears at the bottom of the right side guide and slip the left-side guide inside of the ears. These are all pretty standard specs for most modern BMW engines. Pop these clips out, and the cowl can be pulled off. Start by lubricating the inside of the new crankshaft seal with oil. hb``` cbO The engine will cost over 10K and who knows where you will be when it breaks. Note. . Bringing the BMW community together. The biggest piece of the CTA balance shaft tool is used to lock the oil pump in place so that the sprocket bolt can be removed. Tighten the tools mounting bolts with a 10mm wrench. If not addressed, this issue can lead to major engine problems. Unclip the wastegate rod from the turbocharger and pull the actuator and solenoid out of the engine bay. Remove the timing chain tensioner tool, but don't release all of the tension from the rail. Then, thread in the rest of the fasteners before tightening all twenty of them down with an 8mm socket. TIMING CHAIN KIT For BMW ENGINE CODE: N20B20A, N20B20B, N26B20A 228i 320i 328i 2.0L. Once it is nearly in place, hold the assembly against the block with one hand, while threading in one of the center bolts with the other hand. Starting at the exhaust side front corner, remove the bolts in a counter-clockwise spiral pattern, removing the outermost bolts before moving to the inner bolts. Three 8mm bolts hold the inner panel to the car, while two locating tabs lock the rear in place. I'm at 89k with no issues on my 2013. // end settings. Engines are built to tight tolerances, and a worn chain puts the internal parts outside of those tolerances. Photos: BMW Owner Reviews Write a Review Kathy Rogers on March 10, 2022 under the intake to the turbocharger and tighten it down to secure the two together. For those capable or bold enough to take on this job, there is a lot of monetary savings to be had. Parts: $667 to $672. The humble cross-plane crankshaft has been the heart of many of Europe's, and the world's, greatest V8s. 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