In this case, the 3. 1 injector #20 no. There is a rattling noise in the font of engine when reving from idle. The solenoid controls oil flow through a. So far Toyota was only willing to do the recall and not pay for the engine damage because it is 5,000 miles out of warranty. 6L V8 engine that delivers more horsepower and more torque! Dual Variable Valve Timing (VVT-i). The more advanced the engine, the more power the engine can deliver while maintaining lower emission and lower fuel consumption. Below, we will explain some of the differences across engine lines. The new Toyota Avanza has just been launched in Indonesia. This noise only happens intermittently and ONLY when in idle with your foot on the break (like when I'm stopped at a red light). Maruti Suzuki has launched the new 2. 6L 3V AND 5. When the weather is cold, on startup no lifter noise until engine starts to warm up. I took out the old engine and install a new one complete with vvt pulley, solenoid and all parts. The dual-equal phaser can turn the camshaft over a range of 26 degrees relative to the cam sprocket. Slick 50 and other engine oil additives supposedly reduce engine wear and increase fuel efficiency. I think I have vvt noise. Why Toyota VVT-i engine may start to consume oil and how to do oil leak test. If you're questioning what is normal engine noise, I may have the answer. any angle of advance between nil and maximum. 4 seemed to be quieter and gentler, and gained many fans. The more advanced the engine, the more power the engine can deliver while maintaining lower emission and lower fuel consumption. An engine equipped with a variable valve timing actuation system is freed from this constraint, allowing performance to be improved over the engine operating range. After years of use, wear, neglect, and degradation can result. Engine Hesitates, Stumbles, Lacks Normal Power The computer uses this information to determine how much fuel is needed to maintain the correct air/fuel mixture, and when extra fuel is needed if the throttle suddenly opens wide. 6 engine with only 13K miles. Hey guys, This issue is slowly bothering me more and more. It's semi-rythmatic as the engine runs. BMW E39/E52 VANOS Rattle Noise After Engine Start. Years 2000 to 2008. Find the answer to this and other Peugeot questions on JustAnswer. This ensures excellent engine startability. The Problem. The engine has aluminum DOHC 16-valve cylinder head with variable valve timing system VVTi on the intake camshaft only. The upper valvetrain would be the first to suffer in those cases. Just a basic car. Re: Tappet/tickety engine noise on startup (3. Automakers all use a variety of VVT systems, but they all come with one thing — complexity. Motor seemed pretty noisy during passing and merging acceleration. When its very cold-20-30 degrees, it makes a loud tapping noise like a bad lifter for about a minute or so. Chrysler Engine VVT - variable valve timing. They only replaced some bad chrome parts. Engine Clicking And Tapping Noises problem of the 2011 Chevrolet Equinox 30 Failure Date: 09/23/2011 Concerning 2011 chevy Equinox 4cyl, on startup, there will be a loud knocking noise, sounds as if there is no oil in the engine, sound lasts from 1-5 seconds then goes away. Took it to Toyota and they changed the oil - that fixed the issue for about 1000ks. Quite check is to unplug the VVT Oil Control Solenoid when the car is running and see if the noise changes. The profile on this cam keeps the intake valve open longer than the other cam profile. It has 140+miles on it, well maintained, including ~3K mile oil changes and no sludge issues. delete VVT in truck If you are having noise or stalling issues let me know I work on these all the time ill do my best to assist. My 2007 CX7 has 59,300 miles on it. Most modern engines are hidden under plastic covers and noise-blocking insulation. Concensus of opinion seems to indicate that it could be a VVT problem. Dealer says that the car has a fault with the engine. This engine has a chain driven exhaust camshaft and intake camshaft with variable valve timing. The Harley V-twin engine is characteristically noisy. 6 vvt nois on staft up, vectra 1. GM with each model and each use of this engine has refind the noise issue related to it. 4-liter is available in the Ford F150, F250 and F350 pickups, as well as the Expedition sports utility vehicle. This allows tighter pin to pin-bore tolerances and reduces noise generated as the piston moves through the cylinder. The longer I leave it off the more noise it makes during the next start. after few miles it starts giving me this noise. The most popular has been the 1. GM Powertrain announced today it will deliver a 3. What is this BAD knocking sound in Toyota VVTi engine. Great forum - I hope it's appropriate to seek help on here for my engine problem. 7i vvti its making noise from the vvti and i have replaced it and i still get the same noise - Toyota Cars & Trucks question VVTi engine. (See Figure 1) Phasers can be found just on the exhaust cam or on both the intake and exhaust cams. The noise goes up & down as you rev the engine (sounds like an old fan-driven electric heater !), even when it's in neutral, so presumably engine, not transmission, related. Description Variable Valve Timing (VVT) is used to vary engine performance and enhancements. For many it's the car's ease of use and low impact cost of ownership, while others are drawn to concept of a low CO2 supermini. Along with the SES light, DTC PO300 and engine misfires on the related cylinders, but it is unlikely that any noise will be experienced. One issue is a loud metallic noise heard when you let off the throttle. 6 engine with only 13K miles. uneven wearing of piston skirts would make an otherwise mechanically-sound engine to gradually become noisy (piston slaps) when cold. 7-liter engine is gradually replaced by the new 5. It has 140+miles on it, well maintained, including ~3K mile oil changes and no sludge issues. VVT is computer-controlled and typically uses oil pressure to change the position of a phaser mechanism on the end of the camshaft to advance or retard cam timing. New 2019 Dodge Durango SXT PLUS RWD, from Flowood Mac Haik CDJR in Flowood, MS, 39232-8891. NOTICE • Be careful NOT to damage the cylinder head or spark plug tube with the wrench. It will also accept either E85 or 7 octane fuels. 8 VVTi knocking noise. Hi all, I have a very annoying problem, I acquired a 2005 Mazda 3 2. Gasoline engine. Thank you!. Get great deals on eBay!. No money from the licence fee was used to create this website. If you are looking for a solution, that will not only get rid of that awful lifter noise in your engine but also improve the performance of your car as well, look no further than Liquid Moly Hydraulic Lifter Additive. Reading the codes in your MINI Cooper is a most often the fastest way to find fix most any issue the car might have Check with the experts at Minimania com. Description Variable Valve Timing (VVT) is used to vary engine performance and enhancements. Variable valve lift (VVL) and variable valve timing (VVT) are two of the most popular ones. The car has to be sitting for several hours for it to reoccur at start. On certain vehicles, a loud ticking noise may be exhibited from the VVT when the engine is first started at cold condition, due to wear on the lock pin hole in the VVT rotor or breakage of the VVT case. Replacing the failed actuator will commonly correct this noise issue. I took out the old engine and install a new one complete with vvt pulley, solenoid and all parts. 6 engine with only 13K miles. We test GM's new variable valve timing system and get dozens of horsepower with not sacrificing and torque. With this, lower fuel consumption, higher engine performance, and fewer exhaust emissions have been achieved. My engine makes a rattling sound under acceleration, it does it everytime a depress the gas pedal. The noise only happens for a few seconds, and only when the engine is cold. Kreen would be my choice. When the engine stops, the VVT-i controller (intake) is locked at the most retarded angle by its lock pin, and the VVT-i controller (exhaust) is locked at the most advanced angle. On the '98 onwards engine (AJ27) the VVT has a 10 degree greater operating range and works in a linear fashion: i. Offered to send videos in multiple times showcasing the noise only to be rejected every single time. noise go away when I press down on the gas pedal and pick up speed. With the engine warmed up, some vehicles may exhibit a knocking/rattle type noise from the front timing cover and/or valve (cylinder head) cover below 2,000 rpm. 3 injector #40 no. engine - 1zz-fe and 2zz-ge engines ill ecm +b batt efi main relay battery sfi #10 no. It's a noise that seems to loosely follow the firing cycles of the engine, if that gives you an idea of the frequency of the sound. One issue is a loud metallic noise heard when you let off the throttle. Do you hear the ticking noise while driving? I only hear mine at idle with the windows open, it's worse when the sound is bouncing off a building. I would first clean the engine to rule out deposits. Popular VVT-i & Toyota videos Toyota Celica 1. VTEC (Variable Valve Timing and Lift Electronic Control) is an electronic and mechanical system in some Honda engines that allows the engine to have multiple camshafts. The phasers use directed oil pressure to manipulate camshaft position relative to the sprocket and therefore vary valve timing. VVT-Variable Valve Timing-Cam Phasing - How Does It. Why Toyota VVT-i engine may start to consume oil and how to do oil leak test. Toyota Corolla 1. If the cause of the engine lifter noise is a fault with the engine lifter itself, then it will need to be removed or rebored. Also, does your engine feel like it slightly surges at idle? I sent a couple sound clips to a Chrysler tech and he said it sounds like I may need rocker arms & lifters. Buy CNS TK1030WPOP Brand New OE Replacement Timing Chain Kit, Water Pump Set, & Oil Pump Set for VVT-i Engine "1ZZFE" "1ZZ-FE": Sets & Kits - Amazon. The car was recently in for a "Service Engine" fix and we were told it might start making a noise after that. TigerShark. 5-litre all-aluminium engine uses iridium spark plugs, and an enhanced engine cover also reduces noise and vibration. We didn't find any noticeable problems or defects. - Oil consumption (known on the 2. 4L 3v engine but some competitors reuse cam gears or replace them with inferior aftermarket alternatives. Then the lifters start ticking. Without variable valve timing or variable valve lift, the valve timing is the same for all engine speeds and conditions, therefore compromises are necessary. Toyota dealer told me that it is very common on all VVTI. In the sections below, we describe the basic features of several versions of VVT used in different Chrysler engines. If a valve spring has broken or a camshaft lobe is worn down it will cause the engine to create a tapping or clicking sound due to the excess clearance. I saw posts about the VVTi going bad but I cannot find anything wrong there. The engine is knocking its a toyota yaris 1. That motor does tend to have a lot of valve train noise simply by design, there is little that can be done about it. 2015 Lexus NX Has A Fake Engine Noise Volume Knob, Best Enjoyed 'Off' The "Engine Volume Knob" has a VVT-i variable cam-timing setup to mitigate turbo lag but the boosted version of this. 8 1ZZ-FE VVT-i will develop continuous metallic noise when driving 80-110km/h. I have a 2002 Solara with 2. The ECM operates camshaft timing oil control valve by controlling position of spool valve. Presently there is no rattle on our car due to the heat shields being completely removed. The purpose of these systems is to enhance the engine’s performance by increasing its flexibility when facing various driving conditions. First start of the day is ok. It comes from the engine bay and sounds like a metallic tapping noise, possibly from the top of the cylinders. The video below is of a VVT engine (in this case a Z18XER) with a failed inlet camshaft phasing pulley. Took it to Toyota and they changed the oil - that fixed the issue for about 1000ks. Has that famous VTC actuator grind noise after cold start up. Brief Engine Knock/Rattle Noise at Cold Startup (1AR/2AR) Repair Procedure (Continued) C. vvti gear I had a loud metal to metal noise that began to occur for a second or 2 on cold startup. The VVTi lifespan isn’t that long. Hi Been reading a few threads on here about the cam shaft solenoid filter issue on the 1. Each automotive manufacturer has their own unique VVT system, but most of them rely on a fully functional variable valve timing solenoid to control the flow of oil to the VVT system as it is engaged. The Problem. The noise disappears when it warms up. So that is normal noise then? Or an indication that the lock pin hole is worn? How hard is it to get the dealer to do this repair? if it's the VVT and is not normal, I assume engine temp is irrelevant? How long would the engine have to sit for the pressure to drop. The improved Vios is now a certified EEV (Energy Efficient Vehicle), and can achieve 18 per cent better fuel economy compared with the previous Vios' single VVT-i engine with a 4-speed automatic transmission. As a comparison, the Puretech 110 of the PSA group shows a torque of 205 nm at only 1 500 rpm and the new Fiesta 1. uneven wearing of piston skirts would make an otherwise mechanically-sound engine to gradually become noisy (piston slaps) when cold. also it initially when I started this car there was no noise. 8 L members of the family, the 1ZZ and 2ZZ, use different bore and stroke. It has 140+miles on it, well maintained, including ~3K mile oil changes and no sludge issues. Used 2018 Ford Fusion S Sedan Oxford White in stock and on sale at Bayside Pre-Owned Super Center in Prince Frederick, MD. Applied for engines: series NZ, AZ, ZZ, SZ, KR, 1GR-FE type'04. 1 1 Timing Marks. with 40 years of GM advancements and a new variable-valve timing system. Some vehicles equipped with a 4. VVT sprocket problems are standard of almost all GR engines. ***UPDATE – Never put the word resolved with car issues until you are 100% sure! I never really resolved the issue, the 2jzgte vvti igniter seems to have limitations, I ended up going to a LS2 LQ9 Coil setup, info on the kit and installation can be found HERE Everything posted below is what I …. 0L, 120 bhp one. It seems to be a closed kept secret. Get great deals on eBay!. 0 vvti the person next door to me said it was the big end bearings and another guy said it was the cam shaft and another mate of mine said i have to replace the engine what should i do he reved the engine from under the bonet and when it gets to a certain point the knocking gets very clear as in sound wise and ive been told it is very expensive what. On February 22, Toyota announced phase three of a Limited Service Campaign (LSC) on certain 2007 – 2009 model year Avalon and RAV4 vehicles with a 2GR-FE (V6) engine, the rubber portion of the oil supply hose for the VVT-i actuator may degrade over time. We didn't find any noticeable problems or defects. It also uses sequential fuel injection, and has 4 valves per cylinder with VVT-i. Note: the Toyota PRIUS Toyota engine size doesn. I don't hear anything unusual in your video. When the engine is first started, some vehicles may exhibit a loud ticking noise from the variable valve timing (VVT) (A). obviously bad. The concept of increasing low- and high-speed engine torque by automatically advancing and retarding valve timing isn’t a new thing. I went to change the oil but it looks like when it was last serviced someone went to town and tightened the crap out of the sump plug so once i get that undone i should be right. hi andy if its a 1. 2008 Toyota Highlander V6 - VVTI startup clatter noise - 48K miles: Should I panic or ignore? Apparently this is a common issue, but at a cold startup, a rattle noise comes from the engine for 3-4 seconds. VVT is computer-controlled and typically uses oil pressure to change the position of a phaser mechanism on the end of the camshaft to advance or retard cam timing. SweTechAuto 33,482 views. On paper, this 1. The specific device used to relay information from the VVT to the vehicle's computer is the variable valve timing switch. Local Toyota agents sent me test info. Inside the 2UZ-FE VVTi engine there are new light pistons and oil jets in cylinder block to cool them. My 2007 engine was very noisy, especially when cold. 5 engine only about half the noise under the same circumstances. Variable Valve Timing (VVT) Solenoid is one of the awesome innovation of the automobile industry. Ever since I got it (from new) the engine rattles from about 1000rpm onwards. We've got the best Toyota for you! View Toyota's website now for new cars. ,,,, does the noise go away if you take it to 800 revs on the rev counter ???. Depending on the application and timing, the switch to either fluorinated rubber or all steel was the right thing to do. This noise only happens intermittently and ONLY when in idle with your foot on the break (like when I'm stopped at a red light). What is this BAD knocking sound in Toyota VVTi engine. With the push to get more …. Intake and exhaust Dual VVT-i aside, the new engines feature teflon coating for the pistons (reduces friction), larger water jackets (better cooling, improved combustion, lower noise), roller. In 2010 the 2UZ-FE VVTi replaced the old engine completely. Looks like the - Answered by a verified Toyota Mechanic. A good quality oil helps a lot. 7 has a lot of moving parts. Notice there is a spring on the exhaust cam phaser. 8 vvt oil light comes on for a few seconds, vectra c vvt slight rattle when cold, vectra c 1. 34 If your vehicle experiences the noise from engine room (VVT and/or timing chain noise), your Mazda 35 dealer will inspect the vehicle to verify the cause of the noise. 4-liter is prone to three different types of abnormal engine noise. Spools hard and with the cold. Celica 140 Vvti "death Rattle" i listen under the bonnet. It sounds awful for a second. NOTICE The VVT gear bolts may interfere with the housing during removal. and for the oil to be able to come up again, it will definitely make the noise at start. It will be a little noisier and then it will cycle down when direct Port injection cycle engages. FOUR-CYLINDER ENGINE SECTION 1. Hi Guys, I have a 2002 V40 with a B4184s2 Engine, I have been plagued for several weeks by an intermittant chattering noise coming from the top of the engin, the car even went through its MOT and the garage mechanic didn't know what the noise was, but he said it didn't sound like an "engine" noise. Improvements include stop-start technology, a six-speed gearbox and a tweaked version of the 1. I saw posts about the VVTi going bad but I cannot find anything wrong there. 4L three-valve V8 engine and experience a rattling noise, rough idle, check engine light, the repair may not be as serious as you thought. Variable Valve Timing (VVT) is a way to advance/retard valve timing, and change duration, overlap and even lift in some applications while the engine is running. Car burns a lot of oil and makes a loud noise from engine but told that this is normal for this brand. Popular VVT-i & Variable valve timing videos 171 videos; How to check noise source in exhaust manifold VVT-i engine Toyota Corolla by Peter Finn the Car Doctor. On February 22, Toyota announced phase three of a Limited Service Campaign (LSC) on certain 2007 ? 2009 model year Avalon and RAV4 vehicles with a 2GR-FE (V6) engine, the rubber portion of the oil supply hose for the VVT-i actuator may degrade over time. Years 2001 to 2018. 7-liter engine is gradually replaced by the new 5. 0L Vortec V8 VVT Kodiak Marine Engine (LY6) FEATURES. Motor seemed pretty noisy during passing and merging acceleration. Select the option to run ads for autoblog. BMW E39/E52 VANOS Rattle Noise After Engine StartShort Description E39 M5 and E52 Z8 with S62 engine produced up to 11/30/00. Toyota Corolla 1. My 2008 Impala with the 3. 6L (named the High-Feature engine). Engine airflow is a primary component in the fuel injection control algorithm. high lift and high duration) cam lobe profiles. Toyota service center say they need to replace camshaft gear assy, tensioner, chain damper, timing chain, guides and VVTi assys over 14hrs worth of work with engine out. 0 sport which has an engine rattle. it will eventually start blowing an engine code. I have a 2008 Rav4 that, for the last 12months has been making a noise that sounds like a diesel engine running or something hitting a fan at a rapid speed. corolla vvt 1998; corolla vvti 2001 rear caliper; corolla vvti bearing knock diagnostic; corolla vvti engine noise; correct pressure for cylinders in 2001 toyota corolla; cost of speed sensor 2002 toyota corolla; cracked cylinder head or blown head gasket toyota corolla; cv on a corolla car troubleshooting; cyc head repair on 4zzfe corolla. 150k miles on it, so I'm thinking an auxiliary belt (chain cam engine). 34 If your vehicle experiences the noise from engine room (VVT and/or timing chain noise), your Mazda 35 dealer will inspect the vehicle to verify the cause of the noise. The Toyota 1MZ-FE engine is equipped with SFI (Sequential Multiport Fuel Injection) system and Electronic Spark Advance (ESA) ignition system with individual coils on each spark plug. After that engine gets quiet, No lifter noise. 4L (LE9) engine is offered in the efficient Chevrolet Malibu (fleet only) and HHR. Average repair cost is $2,200 at 88,800 miles. Hi, my first post here and need some help if possible. I'm guessing i might have the Megane VVT dephaser pulley problem. With the largest range of second hand Toyota cars across the UK, find the right car for you. ,,,, does the noise go away if you take it to 800 revs on the rev counter ???. When i removed jack from vvt solenoid, noise was gon but the car has less power. Hey guys, This issue is slowly bothering me more and more. This ensures excellent engine startability. 5 VVT-iE 2017 review. 4 VVT-i bad engine noise. Please, subscribe :) This is my first ever uploaded video. reducing friction and operational noise, while also bolstering the engine’s durability. Looking for a new or used Cadillac, Buick or GMC to get you around the roads in Hermitage, Youngstown, New Castle or Mercer, PA? Stop by Montrose GM Superstore, located right in the middle of Hermitage. So, Variable Valve Timing-In theory, maximum overlap is needed between intake valves and exhaust valves' opening whenever the engine is running at high speed. VVT Noise: Figure 1. Designed to install and perform like the original. My Aurion ZR6 is making the VVTI noise. Hi all, I have a very annoying problem, I acquired a 2005 Mazda 3 2. I was wondering if anyone else is experiencing the same thing?. Often, the right phaser is noisier than the left. There are. Average failure mileage is 63,950 miles. Let them determine if there is a problem that may emerge as a serious and expensive repair down the road. Now, you can replace the failed gasket instead of the entire Variable Valve Timing Solenoid. Variable valve timing systems are usually found in new car engines. This can be caused by a faulty valve timing control actuator. All maintenance is up to date. 4 VVTi 4ZZ-FE strange noise. When warm from about 1. 5 VVT-iE 2017 review. The Chrysler Tiger Shark and World Gas Engines: 1. The water pump on your engine is a thick metal casting containing a pulley, pump fins (a palm-sized propeller to push the water along), and a bearing set. 2004 Toyota Corolla I heard a ticking noise coming from the engine when i stepped on the gas. However, the service manager at the local main dealer last week commented that he'd noticed quite a lot of VVT noise at start-up and thought there might be some advantage to using 5W-30 in the 4. I - Answered by a verified Toyota Mechanic. Buy a 2011 GMC Terrain Engine Variable Valve Timing Sprocket at discount prices. That is an interesting thought, it is definitely possible, however I am wondering if the noise would be at a greater tempo, since it has so many revolutions. The camshafts are chain-driven. Below, we will explain some of the differences across engine lines. Engine Clicking And Tapping Noises problem of the 2011 Chevrolet Equinox 30 Failure Date: 09/23/2011 Concerning 2011 chevy Equinox 4cyl, on startup, there will be a loud knocking noise, sounds as if there is no oil in the engine, sound lasts from 1-5 seconds then goes away. car sat up for months on lot. Obviously it might happen as they use VVTI engines as well but different sizes down to 1. Then try the settings abdo mentioned restarting the noise values at 10 and restest and adjust the noise value higher with each subsequent attempt. The next morning when I started the car I heard a knocking noise in the engine that lasted two to three seconds. This article is to help out with the troubleshooting of the ETCS-i (Electronic Throttle Control System intelligence)also otherwise known as the DBW (Drive By Wire) system found on the 2JZ GE and GTE VVTi, this article is aimed at the supra but may also to apply to the JZS161 Aristo or any other ETCS-i equipped …. Its only happen in 1st gear. Hi Guys, I have a 2002 V40 with a B4184s2 Engine, I have been plagued for several weeks by an intermittant chattering noise coming from the top of the engin, the car even went through its MOT and the garage mechanic didn't know what the noise was, but he said it didn't sound like an "engine" noise. I changed my water pump on my 1998 Pontiac Sunfire Gt. Variable valve timing (VVT) engines have become rather common in the last decade. noise - warm engine at idle TSB 14-0156 NOTE: The information contained in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job. Ticking Noise And Sludge. Figure 1: Camshaft phasers on a 2. Welcome to Mazdaspeed Forums. It has 140+miles on it, well maintained, including ~3K mile oil changes and no sludge issues. The cylinder bore was increased to 88. After the VVT. Reducing emissions, reducing the need for an EGR valve, improving fuel economy, and getting more performance out of smaller engine sizes tells me that the VVT systems are here to stay. Loud ticking noise ,lexus es300 vvti. Check hoses where the meet metal flanges on manifold intakes and any sharp bends in ppipes. The new Toyota Avanza has just been launched in Indonesia. Now, unplug the connector going into the VVT Solenoid (highlighted in the yellow circle in the above picture) and start the engine. These systems sound pretty similar, but what. Tacomas (1995-2004)' started by 4banga, That gear has that spring set up to eliminate gear noise. I saw posts about the VVTi going bad but I cannot find anything wrong there. While there may indeed be cases where this is true, many of the complaints actually turn out to be the hydraulic lifters tapping due to out-of-spec issues. Another toyota service say replacing the VVTi controller will solve the issue. Toyota Corolla problems and issues. Rattling noise, rough idle, check engine light. A variable valve timing (VVT) mechanism has been applied in a high-speed direct injection (HSDI) diesel engine. The Toyota 5. Im still have the same problem with rattle and tick sound from solenoid from new engine. com, the official website for Hot Rod Magazine. If you do not want to confront the Ford dealer, then you can see what can be done to clean up the existing sludge. I don't quite know what to make of this, especially since the VVT system on my car doesn't seem particularly noisy to me when starting up. Check hoses where the meet metal flanges on manifold intakes and any sharp bends in ppipes. • LTC mode reduces NOx (85%), soot emissions (95%) and fuel consumption (15%). The noise you are hearing may be something else, like a timing chain. Installing the factory noise-dampening materials will fix this problem. 0 engine, and I have noticed a clattering noise while at idle with the engine warm. Perhaps if vvt engages in neutral, then it can be ruled out. 9cdti knocking noise on start up site:www. Most modern engines are hidden under plastic covers and noise-blocking insulation. Is the 1998 3rz-FE a VVTi engine? Discussion in '1st Gen. The noise might temporary eliminate if I release throttle and re-apply back (keeps regulating the throttle pressure). But they have issues with timing chains, needing replacement. 0 seconds and 55. 7 has a lot of moving parts. Engines need to be looked after. So far Toyota was only willing to do the recall and not pay for the engine damage because it is 5,000 miles out of warranty. Brief Engine Knock/Rattle Noise at Cold Startup (1AR/2AR) Repair Procedure (Continued) E.