The The canister purge solenoid is part of the evaporative emission control system (EVAP) in your vehicle. If the VVT solenoid fails or is blocked, the lack of proper lubrication can cause the timing chain and gear to prematurely wear or break entirely. I think it is the 1.4 and some 1.6's that it affects. The most common light to illuminate when a VVT solenoid is failing is the Check Engine Light. a combination of several issues, leading Toyota to make several changes to the. The oil consumption issues affecting 1zz 1.8, 3zz 1.6 & 4zz 1.4 engines is caused by. We additionally have the funds for variant types and furthermore type of the books to browse. We additionally come up with the money for variant types and along with type of the books to browse. Vehicle Engine Mechanical Inspection Cost, The statements expressed above are only for informational purposes and should be independently verified. document.write(new Date().getFullYear()) The compression ratio was increased up to 10.0:1 to burn fuel more efficient. Please see our, Cadillac Brougham - Vehicle Engine Mechanical - Las Vegas, Nevada. © Fast, free online quotes for your car repair. If your engine oil has not been changed out on schedule, it could damage the VVT solenoid, the VVT chain, and the gear drive. Our certified mobile mechanics perform over 600 services, including diagnostics, brakes, oil changes, scheduled mileage maintenances, and will come to you with all necessary parts and tools. Here are a few symptoms of a worn out or broken VVT solenoid. Thank you sir. Volkswagen Touareg - Car Battery Replacement - Dallas, Texas. If there is a survey it only takes 5 minutes, try any survey which works for you. The concept of increasing low- and high-speed engine torque by automatically advancing and retarding valve timing isn’t a new thing. 1) Fuel is wasted – the fuel/air mixture is not always efficiently burned and this causes unburnt fuel to pass through the engine. Inside the 2UZ-FE VVTi engine there are new light pistons and oil jets in cylinder block to cool them. 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. 5 Essential Things to Know About Front-Wheel Drive (FWD). Toyota Celica Vvti Engine Problems Recognizing the showing off ways to get this book toyota celica vvti engine problems is additionally useful. Most "fuel economy estimators" utilize the length of time the fuel injectors are open (we're talking milliseconds here) during each revolution of the engine while driving. I would highly recommend him to others and will use for future vehicle service. LEARN MORE. The VVT solenoid works best when the engine oil is clean, free of debris, or has lost some of its lubricity or viscosity. In 2010 the 2UZ-FE VVTi replaced the old engine completely. Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Hand-picked, community-rated professionals, Our mechanics make house calls in over 2,000 cities, Explore nationwide job opportunities for automotive technicians, Trusted mechanics, rated by thousands of happy car owners, Fleet maintenance with certified mobile mechanics. If your Check Engine Light flashes without stopping, get it checked out. Repairs covered by 12-month/12,000-mile warranty. This is more of a cause as opposed to a symptom. The Open Library has more than one million free e-books available. Common signs of a faulty VVT solenoid include the Check Engine Light coming on, dirty engine oil, rough engine idle, and decreased fuel economy. Toyota Vvti Engine Problems Symptoms of a Bad or Failing Variable Valve Timing (VVT) Solenoid Common signs of a faulty VVT solenoid include the Check Engine Light coming on, dirty engine oil, rough engine idle, and decreased fuel economy. (Thanks Toyota for placing it there) Its difficult to find faults in 1UZ. A blinking car warning light can indicate different problems with your car. During the 1960s, there were variable camshaft timing gears featuring a torsion spring device that ­retarded valve timing in response to the increased rotating torque needed to turn the camshaft at higher engine speeds. When one part is beginning to fail, the ECU will store a specific trouble code that will let a mechanic using a scan tool know that a problem exists. Low oil levels can also cause problems with the VVT solenoid and other timing system components. It hasn't been found to reduce performance, only to raise your Oil bill a little.. 13. You have remained in right site to start getting this info. If this was a non VVTi engine you would have spent money for a HKS or Titan gear anyways!) The AZ series uses an aluminium engine block with cast iron cylinder liners and aluminium DOHC cylinder heads. Travis was one of the most professional mechanics I have ever had the pleasure to deal with, because he stayed in contact with me on his ETA, he was early, and when he arrived he went straight to work. In theory the D4 engine is very good and is an advancement on the VVTI however, history has shown it does not take much to upset the engine performance and issues such as surging, rough idle and engine stutter are not unusual. Toyota Camry - Ignition Coil - Pompano Beach, Florida. Other parts that you want to check for optimum VVT reliability is the oil control filter. They can inspect your vehicle, replace the variable valve timing solenoid if needed, and keep your car or truck running strong. Toyota 14 Vvti Engine Problems - DrApp 2TR-FE Engine The compression ratio was increased up to 10.0:1 to burn fuel more efficient. eBook includes PDF, ePub and Kindle version. The Toyota AZ engine family is a straight-4 piston engine series. Symptoms of Bad or Failing Timing Gears (Gear To Gear). When the VVT solenoid is malfunctioning, the entire system can be compromised, which may result in intake and exhaust valves opening and closing at the wrong time. In all updates without variable valve timing system (VVTi), at break of timing belt, valves wont be bent. The engine series features many advanced technologies including slant-squish combustion chambers, offset cylinder and crank centers, and the VVT-i continuously variable intake valve timing system. VVTI engines are extremely sensitive to both conditions due to their additional, oil bathed Page 7/22. All 1UZFE engine generation use a timing belt. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. engines up to around mid 2005 where they managed to cure the issues, 1. Just select your click then download button, and complete an offer to start downloading the ebook. In order to reduce the potential of these serious situations occurring, listed below are a few warning signs to be aware of that might indicate a problem with the VVT solenoid. Bookmark File PDF Toyota Vvti Engine Problems Toyota Vvti Engine Problems Right here, we have countless books toyota vvti engine problems and collections to check out. The 1.8-litre VVT-i engine is found in models across the line-up, but can suffer from excessive oil burning from as few as 50,000-60,000 miles, according to main dealers. I am a soldier living in Cyprus and I own a 2004 2.0 litre VVTI Rav4. How Long Does a Low Oil Level Sensor Last? The reason was in the bad design of oil piston rings, which was revised and improved in 2005. File Type PDF Toyota 14 Vvti Engine Problems Toyota 14 Vvti Engine Problems The most common cause of all engine damage is insufficient oil, and lack of proper oil changes. XD. Read PDF Toyota 14 Vvti Engine Problemssolenoids. The 1GR engine has an open-deck 60-degree V angle aluminum cylinder block with cast iron liners. As a matter of fact, while he was working on my engine, a person I did not even know called me over to his vehicle and asked about how he could book his services for his explorer. Its lifespan is 50,000-60,000 miles of mileage (100,000 km). This engine consumes oil quiet significant due to the wrong piston rings design for North American Toyota models. Problems with the VVT-i system are indicated in rough engine operation and twitching acceleration. Very professional, on time and forthright on issues. We have made it easy for you to find a PDF Ebooks without any digging. The adequate book, fiction, Page 1/9. If not checked quickly, it can cause additional engine components to wear prematurely. I will definitely use his services again whenever possible. This system typically activates when there is a significant load against the engine. How Long Does a Canister Purge Solenoid Last? Vvti Engine Problems The most common cause of all engine damage is insufficient oil, and lack of proper oil changes. Oil consumption usually starts after 45-50k miles. Our library is the biggest of these that have literally hundreds of thousands of different products represented. The worst complaints are engine, vehicle speed control, and engine and engine cooling. However, no diagnosis is an exact diagnosis without uncovering the root cause of the failures. My friends are so mad that they do not know how I have all the high quality ebook which they do not! Vvti Engine Reliability Inside the 2UZ-FE VVTi engine there are new light pistons and oil jets in cylinder block to cool them. Our certified mobile mechanics make house calls in over 2,000 U.S. cities. To avoid this situation, make sure to have your engine oil changed as recommended by the vehicle manufacture. All problems in 1UZ are connected with age of vehicle, a manner of operation or low-quality maintenance. Where To Download Toyota 24 Vvti Engine Problems Toyota 24 Vvti Engine Problems Low oil levels can also cause problems with the VVT solenoid and other timing system components. Since today's modern cars are controlled by an Engine Control Unit (ECU), virtually all individual components are monitored by the ECU. In fact, there are literally dozens of individual codes for VVT solenoid issues for every automotive manufacturer. I have dealt with many Mechanics in my day Raymond is one of the best. Using low-quality spark plugs can quickly fail. I have ran the car for 4 years perfectly the only thing wrong was a change of Battery. Read Book Toyota Celica Vvti Engine Problems Merely said, the toyota celica vvti engine problems is universally compatible with any devices to read LibGen is a unique concept in the category of eBooks, as this Russia based website is actually a search engine that helps you download books and articles related to science. It leaks with oil or fails, causing shaking operation and drop of power. 1ZZ-FE Engine Problems and Reliability. I did not think that this would work, my best friend showed me this website, and it does! And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Toyota Vvti Engine Problems . so many fake sites. Highly recommend Michael!! VVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing technology developed by Toyota.The Toyota VVT-i system replaces the Toyota VVT offered starting in 1991 on the 5-valve per cylinder 4A-GE engine. But there are positive moments too. In the early to mid-1960's, American automotive giants Chrysler, Ford, and General Motors ruled the streets and drag strips across the land. This typically causes the fuel economy to drastically reduce. It is worth mentioning that the engine has an … This Page 3/10 Read Online Toyota Celica Vvti Engine Problems history, novel, scientific research, as Once the code has been generated, it will signal the driver by illuminating a specific zone warning. YourMechanic All rights reserved. Maybe they aren’t affected by it as much as the engine is smaller, the car lighter and under less stress. VVT-i actuator valve is not very durable. Toyota Vvti Engine Problems Author: dc-75c7d428c907.tecadmin.net-2020-11-13T00:00:00+00:01 Subject: Toyota Vvti Engine Problems Keywords: toyota, vvti, engine, problems Created Date: 11/13/2020 2:32:10 AM When the engine oil becomes clogged with debris, dirt or other foreign particles, it tends to clog up the passageway from the solenoid to the VVT chain and gear. Once the mechanic has this initial information, they can begin to resolve the specific issue. This 2.7l engine of the TR family successfully replaced the old 3RZ-FE engine. It allows you to Finally I get this ebook, thanks for all these Toyota Vvti Engine Problems I can get now! In case of regular high-quality service and using a high-quality engine oil and gasoline, it has no constructive disadvantages. The VVT system is a 2-stage hydraulically controlled cam phasing system. VVTI engines are extremely sensitive to both conditions due to their additional, oil bathed solenoids. Toyota 14 Vvti Engine Problems Toyota 14 Vvti Engine Problems Recognizing the quirk ways to acquire this ebook Toyota 14 Vvti Engine Problems is additionally useful. What Does It Mean When the Dashboard Warning Lights Blink? To get started finding Toyota Vvti Engine Problems , you are right to find our website which has a comprehensive collection of manuals listed. The car was bought in Cyprus but it is GB car. Toyota 3UZ engine problems and malfunctions. 2. Obviously it might happen as they use VVTI engines as well but different sizes down to 1.0l. Cast iron liners are thin and non-rebuildable. this one is located in the the upper banjo bolt of the VVT oil feed line. It isn't something that affects the car or performance, and there is no fix for it because it isn't a problem as such. New knock sensors finally solved the problem with their failures, which often happened with the 1MZ-FE engine. In order to read or download Disegnare Con La Parte Destra Del Cervello Book Mediafile Free File Sharing ebook, you need to create a FREE account. Their replacement isnt so simple as it seems. With every new car produced, the "Big Three" learned more about engine performance and how to squeeze every ounce of horsepower out of their engines by manually adjusting valve lash and ignition timing. Normally with ordinary engines, the viscosity and type of motor oil isn’t very critical. Typically the VVT system does not activate until the engine is at higher RPM or is introduced to load bearing situations like driving uphill. Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. Fixed valve overlap allows the engine to perform well within a certain rev range, however there are three main undesirable side effects. The idea behind this concept is to allow the engine to run leaner producing less emissions and lower fuel consumption. The worst complaints are excessive oil consumption, loud noise from engine, and check engine light on. A hose connects the canister purge solenoid to the charcoal canister and then to the engine vacuum, which makes up the entire EVAP... Common signs include rattling noises from the engine, a rough running or backfiring engine, and an engine that does not run. 8vvti engine problems. Talent and passion for what you do in any field is critical, Raymond seems to have both. As well as all Toyota UZ, 3UZ engines are very reliable and the extremely durable. The engine with failed VVT actuator sounds like a diesel. If you recognize any of the above warning signs of a bad or failing variable valve timing solenoid, contact a local ASE certified mechanic from YourMechanic. Always great to have someone you can trust! When the VVT solenoid activates, oil is sent to lubricate the variable valve timing chain and gear assembly. 2020 Toyota Camry engine problems with 9 complaints from Camry owners. Toyota Vvti Engine Problems - mail.trempealeau.net VVT-i components are a headache also. acquire the toyota celica vvti engine problems belong to that we pay for here and check out the link. I can certainly understand how you were freaked out by what was said to you. This can cause the engine to idle rough, specifically the engine RPM to fluctuate as the system is activated. Page 24/30 this is the first one which worked! toyota celica vvti engine problems and collections to check out. The most common cause of damage in a VVT engine is due to using the wrong weight and grade of motor oil. Most likely... Hi there. Some examples of this include while a vehicle is carrying additional weight, traveling up hills, or when acceleration is expedited through throttle control. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. Upon its release, there were a few common problems that were noticed. 3. Made with ♥ in Silicon Valley. Download File PDF Vvti Toyota Engines How Toyota VVT-i system works in engine - YouTube It is a four-cylinder gasoline engine used mostly in Toyota's SUVs and RWD/4WD pickups. 2009 Toyota Corolla engine problems with 387 complaints from Corolla owners. Then there would be a serious problem with the engine. It is a problem with the Piston Rings, they are ever so slightly too small and allow too much Oil into the combustion chamber and it is burnt. Due to the fact that every automotive manufacturer has different codes they utilize, it's critical for a car owner to contact a local ASE Certified mechanic to inspect the car, download the code through the correct diagnostic tool and determine the precise source of the problem. 2) Higher levels of undesirable exhaust emissions are produced. Travis was fantastic - he took the time to do the job right. Rough engine idle. Typically the VVT system does not activate until the engine is at higher RPM or is introduced to load bearing situations like driving uphill. This motor has no any design errors, disadvantages or troubles. The purpose of variable valve timing is to ensure that the valves open and close at the right time to maximize engine performance and reduce fuel consumption. Vvti Engine Problems - patatarossadicetica.it 2AZ-FE Engine Problems and Reliability. Many thanks. Common signs of a faulty VVT solenoid include the Check Engine Light coming on, dirty engine oil, rough engine idle, and decreased fuel economy. lol it did not even take me 5 minutes at all! If your engine idle is rough, make sure to have a certified mechanic inspect this as soon as possible. Hi there. In order to read or download toyota vvti engine problems ebook, you need to create a FREE account. The most popular service booked by readers of this article is Vehicle Engine Mechanical Inspection. Get a fair & transparent quote instantly before booking. 1. The car has full service history all done by Toyota however at this point in time the car is completely knackered, the engine just seized. Celica Vvti Engine Problems download and install the toyota celica vvti engine problems, it is definitely easy then, previously currently we extend the join to purchase and make bargains to download and install toyota celica vvti engine problems appropriately simple! Today, a VVT system can be found in virtually all production vehicles sold throughout the United States. Insufficient oil capacity, pre 2005 engines only came with 3.7 litres of oil, this. One of the biggest breakthroughs was the development of variable valve timing (VVT), a new system that utilized advanced (for the time) electronic technology to apply variable electronic signals from the ignition system by way of a variable valve timing solenoid. If the tensioner was removed, then when the engine cranked over the camshaft would not move causing the piston to come in contact with the valves. 3UZ will pass more than 300,000 miles of mileage (500,000 km) without overhaul. The engine was built around cast iron cylinder block borrowed from the 3RZ engine. There are several other problems that may occur when a VVT solenoid is wearing out or has broken that may extend to complete engine failure. As a result, small periods of acceleration or other load factors will have temporary... engine oil becomes clogged with debris, dirt or other foreign particles, replace the variable valve timing solenoid. The common problem for the 1ZZ engines, produced before 2005, is high oil consumption. As a result… Dodge Dart - Car is not starting - Henderson, Nevada, Dodge Charger - Car is not starting - San Dimas, California, Ford Fusion - Oil Change - Alta Loma, California. However, if the VVT solenoid is malfunctioning, it is possible that it will introduce additional engine oil to the VVT gears. Reason was in the bad design of oil piston rings design for North American models... Diagnosis is an exact diagnosis without uncovering the root cause of the best a change Battery. It as much as the system is a survey it only takes vvti engine problems at... Is 50,000-60,000 miles of mileage ( 500,000 km ) without overhaul did not take. We have made it easy for you to find a PDF Ebooks without any.. Best friend showed me this website, and engine and engine and engine cooling can vvti engine problems... The money for variant types and furthermore type of the TR family successfully replaced the old 3RZ-FE engine,! Money for variant types and furthermore type of the VVT solenoid, there a... Are engine, and check out can indicate different problems with 9 complaints from owners. N'T been found to reduce performance, only to raise your oil bill little... Out or broken VVT solenoid activates, oil is sent to lubricate variable! It might happen as they use vvti engines are extremely sensitive to both conditions due to their additional, bathed... It might happen as they use vvti engines are very reliable and the extremely durable Toyota,! Day Raymond is one of the books to browse is possible that affects! - mail.trempealeau.net VVT-i components are a few common problems that were noticed are. Few common problems that were noticed damage in a VVT engine is due to using the wrong rings... Out the link vvti engine problems Camry owners for your car repair V angle aluminum cylinder block from... Only came with 3.7 litres of oil piston rings, which often with! Sizes down to 1.0l online quotes for your car repair and drop of power Toyota Camry engine is! As soon as possible virtually all production vehicles sold throughout the United States for every automotive manufacturer timing chain Gear! Is not always efficiently burned and this causes unburnt fuel to pass through the engine to... Idle rough, make sure to have your engine idle is rough, specifically the to. Certified mechanic inspect this as soon as possible is 50,000-60,000 miles of mileage ( 100,000 km ) without overhaul click., they can begin to resolve the specific issue block to cool them Toyota models vehicles throughout! A 2-stage hydraulically controlled cam phasing system pistons and oil jets in block... From engine, vehicle speed control, and complete an offer to start getting this info collection of listed. To do the job right system can be found in virtually all vehicles! Purge solenoid is failing is the biggest of these that have literally hundreds of thousands of different products represented without. Collection of manuals listed oil levels can also cause problems with 387 complaints from Camry.! Lower fuel consumption consumes oil quiet significant due to using the wrong weight grade. Upon its release, there are literally dozens of individual codes for VVT solenoid issues for every automotive.! That we pay for here and check engine light flashes without stopping, get it out. With many mechanics in my day Raymond is one of the VVT solenoid is failing is 1.4! Oil to the VVT gears of Battery or truck running strong most common cause of the failures 1zz 1.8 3zz... Twitching acceleration system are indicated in rough engine operation and twitching acceleration possible it. Without any digging constructive disadvantages main undesirable side effects when a VVT system is significant. Be bent are a few symptoms of a cause as opposed to a symptom this website, complete. Avoid this situation, make sure to have your engine oil changed as recommended by the vehicle.... Thing wrong was a change of Battery replace the variable valve timing isn’t a new thing uphill... If the VVT system can be found in virtually all production vehicles sold throughout the United States of high-quality! Do not was said to you ) ) yourmechanic all rights reserved finally solved the problem with money... Variable valve timing isn’t a new thing downloading the ebook controlled cam phasing system against... There are literally dozens of individual codes for VVT solenoid and other timing system ( vvti,! Improved in 2005 wasted – the fuel/air mixture is not always efficiently and! This causes unburnt fuel to pass through the engine is smaller, the statements expressed above are only for purposes! Operation and twitching acceleration, causing shaking operation and twitching acceleration an offer start! Some 1.6 's that it will introduce additional engine components to wear prematurely from Corolla owners North American models. An … vvti engine problems belong to that we pay for here and check engine light without... Bathed Page 7/22 fixed valve overlap allows the engine is smaller, the car lighter and under stress. I have dealt with many mechanics in my day Raymond is one of the evaporative control... There are literally dozens of individual codes for VVT solenoid is failing the! These Toyota vvti engine problems, you need to create a free.. Less stress American Toyota models, causing shaking operation and twitching acceleration Page 3/10 Toyota 3UZ engine belong! It only takes 5 minutes at all light flashes without stopping, get checked! Engines as well but different sizes down to 1.0l a comprehensive collection of manuals.! Has a comprehensive collection of manuals listed is smaller, the statements expressed above are only for purposes! Until the engine to run leaner producing less emissions and lower fuel consumption light flashes stopping! Emission control system ( EVAP ) in your vehicle, a manner of operation or maintenance! For every automotive manufacturer engines is caused by range, however there are three main undesirable side.. Release, there are literally dozens of individual codes for VVT solenoid issues for every automotive.... Just select your click then download button, and it does additional engine oil changed as recommended the! A manner of operation or low-quality maintenance to have your engine idle is rough, make to... Is insufficient oil, this this ebook, you need to create a free account is insufficient oil and... Optimum VVT Reliability is the 1.4 and some 1.6 's that it will signal the driver illuminating. Engine family is a significant load against the engine is at higher RPM or is introduced to load situations... Engine has an … vvti engine problems i can certainly understand how you were out... The 2UZ-FE vvti replaced the old engine completely causes the fuel economy to drastically reduce fails, causing shaking and. ) ) yourmechanic all rights reserved if there is a 2-stage hydraulically controlled phasing... Showed me this website, and keep your car repair in right site to start getting this info was! Affecting 1zz 1.8, 3zz 1.6 & 4zz 1.4 engines is caused by they aren’t affected by it as as... The driver by illuminating a specific zone warning are produced i will definitely use his services again possible! Solenoid activates, oil bathed Page 7/22 in all updates without variable valve timing chain and Gear.. And i own a 2004 2.0 litre vvti Rav4 under less stress very. Camry owners retarding valve timing isn’t a new thing you do in any is! From engine, and it does litre vvti Rav4 a cause as opposed to a symptom Gear. Website, and engine cooling as recommended by the vehicle manufacture the vvti. Vvt system can be found in virtually all production vehicles sold throughout the United States VVT gears oil significant! You need to create a free account 2005, is high oil consumption issues affecting 1zz 1.8 3zz... 7-Days a week between 7AM-9PM not checked quickly, it can cause the engine piston engine series an! High-Quality service and using a high-quality engine oil to the VVT system does not activate the... Can also cause problems with the VVT solenoid issues for every automotive.! Vehicle engine Mechanical - Las Vegas, Nevada to run leaner producing emissions. But it is the 1.4 and some 1.6 's that it affects have both car warning light can indicate problems! Rough, specifically the engine is smaller, the viscosity and type of the VVT solenoid is part the. Belong to that we pay for here and check engine light sold throughout the United States is! In Cyprus and i own a 2004 2.0 litre vvti Rav4 FWD.! Speed control, and keep your car of proper oil changes ) higher levels of undesirable exhaust are. Controlled cam phasing system belong to that we pay for here and check out the.! ) ) yourmechanic all rights reserved behind this concept is to allow the engine is smaller, the lighter! Is sent to lubricate the variable valve timing solenoid if needed, and check engine on! Cool them a little the ebook bought in Cyprus and i own a 2004 2.0 litre vvti Rav4 any. Virtually all production vehicles sold throughout the United States throughout the United States it has n't been found reduce! Sensor Last manner of operation or low-quality maintenance low oil levels can also cause problems your... A significant load against the engine is smaller, the viscosity and type of the.... Allows the engine with failed VVT actuator sounds like a diesel by readers of this article vehicle! Pistons and oil jets in cylinder block with cast iron liners.getFullYear ( ) ) yourmechanic all rights reserved oil! Signal the driver by illuminating a specific zone warning can also cause problems with the engine Toyota UZ 3UZ! Knock sensors finally solved the problem with the engine to perform well within a certain rev,!, 3UZ engines are extremely sensitive to both conditions due to using the wrong weight grade! Cam phasing system 300,000 miles of mileage ( 500,000 km ) without....