I dont have a reader so i don't know if there are any codes stored. • Mark any suspect "soft" HVA element(s) for further examination. The resulting clearance between the HVA elements and the camshaft lobes causes the tapping/rattling noises. I've been chasing a right side tick/knock at startup on my 2007 12GS for quite a while now. Car has 186000 miles. It was an aftermarket installed just 3 months ago -- the threads are somewhat uneven already and look different from the new BMW one, which is enough to make the cold-start squealing/rattling noise after just 3 months. • Let engine idle at operating temperature with the hood open to verify valve train tapping/rattling noise. Quoted below some info from DrVanos.com "The common M5 'diesel rattle' can be attributed to the splined gears that fit at the back of the vanos, connecting the vanos to the cam gears. JavaScript is disabled. I’ve certainly heard the same thing from many modern VW/Audi engines and professionally I consider it normal and harmless, although I find their 4 cylinder engines to be absurdly noisy in general and find that startup noise and general engine noise unacceptable personally. Remove suspected HVA elements and visually inspect. Refer to the HVA bleeding procedure described below. Tapping/rattling noise from the valve train area may have various different causes depending on […] I'm not exactly sure what it is but it's pretty loud. The components that secure the muffler can get corroded over time. M5Board is the best forum community for information on the BMW M5 E60 (V-10), E39 (V-8), E34 (straight 6), E28, F90 and F10. Apply a force of approximately 4.50 – 6.75 ft.lbs for 10 – 15 seconds to the HVA element using your thumb, folding arm tool or a hard wood wedge. It doesn't do it when cranking, it's only when the car first starts up (more noticeable on cold start-up). I will be pushing the issue again soon. A typical VANOS rattle usually sounds like a bunch of marbles rattling around in a plastic bucket. A rattling VANOS doesn't necessarily associate with any codes. Always start your diagnosis with the most common cause. Get a BMW Pulley Kit here http://amzn.to/1ThRncDI know i'm not the first or the last to experience this and i'm sure many people have already. As the vehicle moves, the loose muffler gets hammered into the other parts of the car’s body producing the characteristic rattling sound. No loss of performance. Sharp Engine rattle noise at startup Diagnose and fix engine rattle noise with P0011, P0014, P0016, or P0017. Another reason why I don't think its vanos noise is because when you replace this tensioner bolt we are talking about, the very first startup the rattling is SUPER loud because the bolt has to pop out of its clip that holds it back for the first time. When i start the car, as it revs automatically towards 1000rpm approx a quite loud rattling noise is heard. This could be a simple fix such as tightening or replacing your engines various belts. I can't really tell. For a better experience, please enable JavaScript in your browser before proceeding. This is usually caused by low-octane fuel in a high-compression engine, but it can also be due … • Then with the engine at idle listen for valve train noises again. Could also be the starter itself; mine had this problem and it was replaced under warranty. • If no more noises can be heard, the test procedure is complete. A noisy VANOS may drive you up the wall while driving, but it won't result in poor performance … Since i 1st started this thread it has done it 2 more times at random. The air which is drawn into the oil system can enter the HVA elements. To update, the noise turns out to be the water pump/alternator/PSP belt. There are three possibilities: your calipers have an anti-rattle plate and if it’s incorrectly fitted the pads can move around. • The number of subsequent cold starts without the engine being warmed up to operating temperature. A small amount of oil also escapes through the gaps between the HVA elements and the HVA housings in the cylinder head. The two flames collide, boosting the pressure. This prevents possible binding due to different wear patterns between the bore in the HVA housing and HVA element. For more information ontechnical bulletins available through APRA call 703-968-2772 or visit www.AutoBulletins.com. Rattles are rarely heard at idle, although they'll become louder as engine RPMs increase. If clearance between the camshaft lobe and the HVA element is created when the force is applied, this indicates that the check valve incorporated in the HVA element is not closing/sealing properly due to contamination. This operating condition can occur, for example, on new vehicles. Hot engine oil initially escapes from the oil galley of the HVA elements when the engine is stopped. Engine ping or pre-ignition is caused by hotspots in the cylinder igniting the air-fuel mixture before the spark plug. Only very rarely do i not get this rattle, im worried it could be a vanos issue. This happens pretty much all the time no matter how warm the engine is. If you suspect the noise could be coming from belt driven accessories, such as the alternator, water pump, power steering pump, and so forth, you can disconnect the serpentine belt from the engine and run the engine just briefly (as before, that is after it has sat idle and is cold) and see if the noise disappears. Remove HVA elements and visually inspect. This type of HVA failure may not cause a tapping/rattling noise but the customer complaint may be, "engine runs rough during the warm up phase and runs good when warmed up" and/or the "Check Engine" lamp is on. Any subsequent start within a few hours has no problems. Note: A faulty oil pump control valve O-ring or oil pump pick up gasket (slight tear in O-ring or gasket) may not always result in a low oil pressure indication when performing an oil pressure check. Replace any binding HVA element(s) and check others for extreme wear (deep grooves, scratches, etc.) • If there is a binding HVA element in one or more cylinders as described above a misfire fault can typically be reproduced in the affected cylinderfs) by duplicating the conditions in which the misfire occurred according to the DME/ECM fault code description i.e., at engine temperature = X, engine speed = X, etc. VANOS rattling usually occurs on higher-mileage BMWs, although it can be difficult to predict exactly at what mileage it happens. If any clearance is detected this indicates that the HVA element is sticking. Tapping/rattling noises in the area of the valve train for the first 8 -10 consecutive cold starts. Suspension - Intrax Shocks with Bilstein Springs. VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Run the engine to dissipate (bleed) the air trapped in the high pressure chamber of the HVA elements. No SES lights no warnings no messages. Discuss performance, specs, reviews and more! These noises can be traced back to the higher viscosity of cold mineral based engine oil. Im sure ill get it to bmw soon but for now it is still home with me. Sounds louder from under the car more than it does under the hood. 1, Toubleshooting BMW Hydraulic Bucket Tappet Problems. If the oil pump pressure (at idle = minimum pressure or regulated =maximum pressure) is below specification a visual inspection of the oil pump and oil pump pick up in the oil pan should be performed with emphasis on the pick up gasket and control valve O-ring were applicable. The two most common reasons for the replacement of BMW hydraulic bucket tappets (HVA) found in M42, M44, M50, M52, M54, M60, M62, S50, S52 and S62 engines are: tapping/rattling noise from the valve train area or a binding HVA element. Hi all, Just noticed this yesterday, upon startup there is this brief knocking/rattling noise that seems to be coming from the passenger side of the engine. If the HVA element collapses slightly as though it is spring loaded, this is a sign that air is trapped in the high pressure chamber. LOUD rattling noise during start up and gassing. which may also need to be replaced. Refer to Temperature/Viscosity chart for further information. Recently, I have noticed that there is a brief rattling or clacking noise coming from the engine on a cold start. An engine rattling noise, or a clicking sound in an engine, can spring up from a number of sources. Stay up to date by signing up for the Engine Builder newsletter. This results in clearance between the HVA element and the camshaft lobe which then causes a tapping/rattling noise. Discussion Starter • #1 • Jun 11, 2018. The noise doesn't always occur on every start, but when it does happen, it's always on a cold start. Do you ever hear strange sounds coming from your motorcycle and wonder if it is trying to tell you something? 2010 … It is for sure a valve noise. This is where the chain is not under the correct amount of tension and is free to rattle around against the plastic chain guides. Tapping/rattling noise from the valve train area may have various different causes depending on engine oil level, engine/oil temperature, when the noise is heard (cold start, engine hot), etc. I have 112,000 miles on the bike and it has over the last few years been getting more and more rattling and ticking as time went on. The noise becomes most pronounced two, sometimes three times right after startup, each time lasting for about 3 seconds. After about 10-15 seconds or so, the sound settles and is no longer audible. Only very rarely do i not get this rattle, im worried it could be a vanos issue. Whatever the cause, there are some adjustments you can perform to quiet the lifters on start-up. Whether it's engine knocking when accelerating or some kind of spark knock or just a general engine noise, some are more serious than others, but there’s one thing that’s true of them all: it’s never good to leave it alone. You can do a simple check by dropping some water on the belts and revving the engine. Oil Clearances and Options for LS Engines, Metalworking Fluids and Machining Webinar, Sonoma Appoints Nick Bublitz as Drag Strip Manager, Champion Modern Muscle 0W-40 for Gen III Hemi, Fluidampr Toyota 2JZ 15% Underdrive Damper, Mild vs Wild – Horsepower At Any Cost (Diesel Edition) Ep. which may also need to be replaced. Certain BMW noises can be an indication of a bigger car problem. If this doesn’t quieten down the noise you could have a more serious problem on your hands. The rattling noise is typically heard while driving especially during acceleration or when you drive on poorly-paved roads. This happens pretty much all the time no matter how warm the engine is. Some or all of this information was provided by the AutomotiveParts Remanufacturers Association (APRA). Problem: You hear a rattle from the rear of your vehicle, come to find out the exhaust butterfly valve is loose causing the rattle noise. • A binding HVA element will typically have a high pressure piston (located in the center of the HVA element body) which extends out approximately 3 mm further when compared to the other HVA elements removed from the cylinder head. Tapping/rattling noises in the area of the valve train after extreme cornering/lateral acceleration (engine oil level at or below minimum). A cylinder with a binding HVA element will indicate a high reading when compared to the other good cylinders. • Release the applied force from the HVA element and using a feeler gauge measure the clearance between the HVA element and the camshaft lobe. after a waiting period (at idle) of approximately 15 – 30 seconds. • If a tapping/rattling noise can be heard from the valve train, run the engine for 3 minutes without load at approximately 2,500 to 3,000 rpm (bleeding procedure). This condition is not caused by mechanical damage to any engine components and has no damaging effect on the service life ofthe engine. If the tapping/ rattling noise is still heard after performing the above HVA Bleeding Procedure the following scenarios will assist in further troubleshooting for HVA element noise: If the noise is coming from all HVA elements an oil supply problem is the most likely cause. Watch Engine Builder's latest discussions and explanations. Refer to the HVA bleeding procedure described below. Note: Only listen for noises when the engine has reached minimum oil pressure, i.e. It's also not every time you start it, only when it's been sitting awhile (such as over night). A weak tensioner can cause your MINI to develop the dreaded cold start (death) rattle. • Since a binding HVA element may in some cases be intermittent (engine only runs rough when cold) if a cylinder leak down check is used for troubleshooting this should be performed when the problem exists, for example: compare the cylinder leakage rates to each other with a cold engine to determine the cylinder with the extreme leakage rate. If you hear a rattling noise when you are accelerating then this is definitely a friction problem. An HVA element which is binding (element stuck in the extended position) will not allow avalve (intake or exhaust) to seat properly causing valve seat leakage. Is the SES light illuminated? Vehicle lifter noise on start-up may be caused by several factors, depending on the type of oil filter, oil, lubrication system, mileage, mechanical condition and even required adjustments of your vehicle. • If the tapping/rattling noises can still be heard, the bleeding procedure must be performed one final time for approximately 15 minutes. No further action is necessary, the engine is working properly. Car: 2011 BMW 335i XDrive Coupe, Automatic (Factory/Stock – no engine/exhaust modifications) AGATools.com Exhaust Rattle Repair Kit – E92 Part Number: AGA-ER-E92. Once the engine is running the noise either stops or is simply drowned out. … When i start the car, as it revs automatically towards 1000rpm approx a quite loud rattling noise is heard. Noise when braking? The noise at 3-4k is valve noise as well. Something needs to be done with this noise. The chain tensioner is inherently weak and has had several revisions from BMW over the years. The two most common reasons for the replacement of BMW hydraulic bucket tappets (HVA) found in M42, M44, M50, M52, M54, M60, M62, S50, S52 and S62 engines are: tapping/rattling noise from the valve train area or a binding HVA element. Well, isn't this a timely post. If the "Check Engine" lamp is illuminated due to a binding HVA element(s) one or more misfire fault codes may be set in the Engine Control Module (ECM/DME). Power approx 429 bhp on Evolve's Dyno, may vary depending on conditions and Dyno. The oil then contracts while the engine is cooling down and allows air to enter the oil system. BMW Makes Noise When Opening Door If you hear a noise when opening a door in your BMW, the most likely causes are a fuel pump that primes the fuel system before starting the engine. Hello, my BMW recently developed a whining noise in the steering it's very low pitched but kinda loud and is worse when cold, it is a 2000 bmw 323i, also I keep having to put water in my car like every 2-3 days the water light comes on, there's no sign of overheating it's just losing water what could that be? Check engine oil pressure as outlined in the appropriate repair manual. Components: Making the Most of LS Cylinder Heads, Shop Solutions: Shop Solutions January 2021, Products: Champion Modern Muscle 0W-40 for Gen III Hemi, Engine News: Metalworking Fluids and Machining Webinar, Diesel of the Week: Twin Turbo 5.9L Cummins Engine, Engine News: Sonoma Appoints Nick Bublitz as Drag Strip Manager, Service Issues on Ford 4.6L SOHC & DOHC Engines, Carburetor Tuning: A/F Mixture, Air/Fuel Equation, Cleaning Engine Blocks & Engine Cylinder Heads, Ticking, Knocking Noise Complaints: Ford 4.6L / 5.4L 3V Engines. • Check oil level – correct if necessary. The resulting clearance between the HVA elements and the camshaft lobes causes the tapping/rattling noises. • Performing the "Smooth-Running" test (found in the DME control unit functions section of DIS) will assist in pin pointing a cylinder with a binding HVA element. The noise you are hearing is quite common. Are there any codes stored? For a brief moment insufficient oil reaches the high pressure chamber ofthe HVA element via the high pressure valve after start up. Here's what those noises may mean. Replace any suspect "soft" HVA element(s) and check others for extreme wear (deep grooves, scratches, etc.) Sounds like VANOS. • If the tapping/rattling noises can still be heard, the bleeding procedure must be repeated (run the engine for 3 minutes at 2,500 – 3,000 rpm).If necessary, repeat this procedure up to five times. Shop the latest Engine Builder merchandise. This HVA tapping/rattling noise is not dependent on the amount oftime the engine is off, but rather on: • The temperature of the engine when it was turned off (operating temperature – hot). It is important to address your BMW problems and noises as soon as possible. A cylinder with a binding HVA element will indicate a leakage rate above 15%. Note: Always reinstall used HVA elements in the same bore which they were removed from. GM 2.0, 2.2 and 2.4 liter engines can make a sharp engine rattle noise at startup and set any of the following trouble codes on the vehicles listed below. This condition usually occurs after the engine has been turned off at normal operating temperature and then not warmed up to full operating temperature during the next series of cold starts. Check that oil viscosity is matched to ambient temperature range at which the vehicle is being operated. • Repeatedly apply a force ofapproximately 2.25 ft.lbs to the HVA element with your thumb or using a folding arm tool BMW special tool number 90 88 6 009 321 (included in the BMW assembly wedge kit P/N 90 88 6 009 310) or a hard wood wedge. It's like an extremely loud rattling/clanking noise. Hi all, I've noticed something strange. During the subsequent cold start, this air can be forced into the HVA elements (causing air pockets) through the build up of engine oil pressure. Run the engine to dissipate (bleed) the air trapped in the high pressure chamber ofthe HVA elements. • Conduct the checks as described above on all HVA elements. • A binding HVA element which is causing a misfire in one specific cylinder will not "move" to an other cylinder and will always cause a misfire fault in the affected cylinder. If the noise is still coming from an individual HVA element after performing the above HVA Bleeding Procedure the suspected element(s) can be isolated as follows: • Turn the engine over (normal direction of rotation) until the camshaft lobe ofthe HVA element to be checked is pointing away from the HVA element (engine valve completely closed). The following Complaint/Cause and Repair scenarios will assist in troubleshooting for HVA element noise: Tapping / rattling noises from the area of the valve train up to 20 seconds after a cold start. The noise shouldnt change at all if it wasn't the chains at all. 174 Posts . Note: Basic troubleshooting should be performed First before checking for a binding HVA element to eliminate all other possible factors/components which could set the misfire faults such as low fuel level, a faulty spark plug, etc. The air drawn in to the lubrication system via a defective gasket or O-ring will cause oil foaming and HVA tapping/rattling noises. 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