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| # | Post Title | Result Info | Date | User | Forum |
| What’s the difference between 4 piston & 6 piston brake callipers? | 20Relevance | 5 years ago | Manoo | Submit Your Question HERE | |
| Hi guys I have always been confused when ever car reviews said the brakes are 4 pistons or 6 pistons. What does it mean? | |||||
| Answer to: Scotty. I purchased a 2011 BMW 535i. Three days after the purchase, a piston and rod was damaged. Pepboys, suggested replacing the engine. What do you think about replacing the damaged piston and rod, and do I need to think long term about... | 20Relevance | 5 years ago | Mod_Man | Submit Your Question HERE | |
| You need a new motor. If you bought it as is, the dealer owes you nothing legally, even though it was a sleazy thing to do. Did you get it checked out by a mechanic prior to purchase? Did you happen to buy from.a dealer with a 5 or 7 day return policy? | |||||
| Answer to: Scotty. I purchased a 2011 BMW 535i. Three days after the purchase, a piston and rod was damaged. Pepboys, suggested replacing the engine. What do you think about replacing the damaged piston and rod, and do I need to think long term about... | 20Relevance | 5 years ago | InThrustWeTrust | Submit Your Question HERE | |
| Goodbye engine. If they sold you such a badly damaged vehicle, you need to ask for a full refund, and if they refuse, contact a lawyer. Did you do a pre purchase inspection on the vehicle, before purchase? | |||||
| Answer to: White exhaust smoke at startup with oil loss | 21Relevance | 11 months ago | Abhi | Submit Your Question HERE | |
| It's likely Coolant or Engine oil burning inside the Chamber. Lets assume its coolant, Coolant Quantity will deplete faster and you might want to check your coolant level often after driving your car for a good distance with the AC turned on.Coolant burns are most likely associated with bubbling of the coolant when you open your Radiator cap in colder engine you can see coolant boiling due the the loss of compression gasses from the head gasket. That said, you may also have a blown up head gasket and further see oil leaks in due time. Coolant burns are hard to find in exhaust fumes, if the leak is slow, all you have to do is check coolant reservoir when cold. Secondly as I'm 90 percent assuming, lets say Its engine oil burning. Since you have replaced necessary valves. We can rule them out. On startup of a cold engine, what happens for a few seconds is. The piston and its rings are not fully expanded in colder temperatures and does to form a correct seal lock in colder Temperatures. And oil leaks from the piston rings and combust with the air fuel mixture, thus resulting in white smoke. As the engine chamber warms up gradually after few seconds, the piston, rings, sleeves, with heat, expand to their correct sizes and forms a tight seal, thereby after few seconds it does not let oil pass through them, there by not burning oil and white smoke has stopped. Engines are meant to be run hot, as their operating temperature, not cold. That's why its advised not to rev your engines right after startup as that's not the best temperature engine is to be run. It is most likely your piston rings and sleeves have given up in one or more cylinders. And it may need a rebuild. You can do a compression test professionally to determine the compression leak. You can drive your car until it passes emissions tests and does not emit much white smoke in traffic, you have to keep adding oil for every 500 miles. Over time, Your spark plugs also keep failing as unburnt oil deposits, clog the spark plugs. Causing misfires and tripping codes. White smoke is just visible on startup, but even later as you drive, engine still burns minute amounts of oil but you just cannot see them. When cold, put your finger in the tail pipe, it has to be dry like powder, if its greasy, your car is burning oil all the time. Heck if you are a cheap guy like me, you can just drive adding engine oil additives, you can add engine oil of thicker viscosity, you have to keep changing spark plugs. If the mechanic verdicts that you need a engine Overhaul, its upto you. When you anyways need a new engine why not experiment by using oil additives or Thicker engine oil. Again Not recommended. It's for curiosity. I remember adding myself a Truck engine oil to my Motorcycle which had same problem at startup. It still burned oil. ATS is for rubber seals, Fuel additives are for Injectors. If you want to experiment Additives, they have to be directly added to engine oil. Im not a Mechanic, it's my diagnosis as a enthusiast. I wonder why your Camry has given out such soon with less mileage. Better consult a Honest Mechanic like Scotty. | |||||
| Answer to: Do not like turbochargers. | 21Relevance | 1 year ago | Justin Shepherd | Submit Your Question HERE | |
| Those engineers for the most part are really doing the best they can, all things considered. EPA rules and regulations don't follow the laws of physics 99% of the time. Most lawmakers were attorneys before going into politics, not engineers. EcoBoost engines, and really all ultra-modern, run-of-the-mill turbocharged engines are a massive compromise in order to appease the lawmakers. Most have absolutely no clue about how internal combustion engines work. My 2017 Mustang V6 takes 5W-20 oil, my wife's 2017 EcoBoost takes only slightly heavier oil, 5W-30. Her Mustang is designed to only occasionally use the turbocharger. The engines are great on paper, if you drive conservatively. Most people don't drive conservatively when they know they have turbos in their cars. I have a piston from the 3.6L Pentastar V6, which takes the same oil as my wife's Mustang; I can easily squeeze in the piston rings with my hand. The EcoBoost Mustang isn't designed to constantly use its turbocharger. Most engineers know that in order to put a turbocharger on an engine properly, the piston rings need to be a lot stiffer than in my wife's Mustang's engine. Stiff piston rings require heavier, more viscous oil which decreases gas mileage when the turbo isn't kicking in. That wastes gas, because the turbo is only really meant to accelerate the car, and spool down once the car is going at the driver's desired speed. Once it's at the desired speed and the turbo dies down, increased fluid friction noticeably decreases gas mileage. They're not meant for applications like the WWII-era P-47 Thunderbolt or P-38 Lightning, where simply cruising kicks in the turbocharger, and the turbo doesn't stop until you idle the engine. Those engines had viscous oil, because their engines were intended from the start to pretty much always use forced induction. | |||||
| Oil consumption | 18Relevance | 5 years ago | Roberto79 | Submit Your Question HERE | |
| ... sense to be the rings. What do you think it is and if it is the rings then is there a liquid sealant that you know that works instead of paying someone to do an engine tear down to replace the rings? Also I didn’t do my research about kias when buying from the dealership and apparently Kia has been having this problem a lot with their cars. | |||||
| Answer to: Why Are There So Many Recalls When Robots Help Assemble Vehicles? | 16Relevance | 2 years ago | Justin Shepherd | Submit Your Question HERE | |
| Robots don't design piston rings, etc. Some human designed the piston rings and the robot made them. Robots don't problem-solve; if the engineer royally screwed up, the robot who made the piston rings or whatever, screwed up as a result. Artificial Intelligence can problem-solve. We don't design cars using AI. | |||||
| Answer to: New Corolla uses 0W8 oil, yikes! | 16Relevance | 2 years ago | Justin Shepherd | Submit Your Question HERE | |
| It has a lot do to with low tension piston rings. I have a complete piston assembly from a 2010 Dodge Journey that I found at the scrapyard. That used 5W-20. You can squeeze piston rings with your hands. Back in the day, you needed special tools to even think about putting one inside of an engine. It's all in the name of getting better gas mileage, and I'm sure there is probably a lot of blow-by. | |||||
| Answer to: OEM Oil & Filter any better | 21Relevance | 1 year ago | Oskool | Submit Your Question HERE | |
| According to independent oil filter testing. Toyota oil filters have some of the worst filtering performance. I'm not sure where Brand Ranks bought their Toyota oil filter from. If they bought it off Amazon there's a high probability it's a counterfeit part which would explain the oil filter's poor filtering performance. I like to buy premium oil filters. I'll spend an extra $5 on a premium oil filter that I change once a year. It seems silly not to. The latest oil filter I bought is the Purolator Boss. I might try out the Frame Ultra Synthetic oil filter next since it's available at Walmart and scored well in filtration testing. I also change the oil filter and motor oil every 5,000 miles or once a year, even though on the oil filter box it states the oil filter can go 20,000 miles. If I had a turbo charged vehicle I'd change them both at 3,000 miles due to turbo charged engines having high in-cylinder pressure which wears the piston rings out faster. The turbo charger spins at 20,000+ RPM which wears the motor oil out faster too. For my next oil change I'm switching to Valvoline Restore and Protect full synthetic. The motor oil appears to do a good job keeping the inside of engines clean. Which helps prevent piston rings from sticking. Recently I've learned about certain gas stations selling Top Tier fuel with detergent and fuel injector cleaning additives above the EPA minimum requirements. Toyota recommends running Top Tier fuel in their vehicles, as do other automotive manufacturers. It's important to note that Top Tier fuel is available in all octane levels, including Regular 87 octane. I've come to learn the fuel in a vehicle is just as important as the oil. If the fuel injectors become clogged, the fuel can't atomize and it won't burn. Which leads to what's called cylinder washdown. The unburnt fuel washes all the oil off the cylinder walls which causes the piston rings and cylinder walls to wear down. Once that happens blowby starts to occure, leading to a loss of power. Along with fuel and exhaust gases blowing by the piston rings and going into the oil pan and contaminating thr oil. Leads to accelerated engine wear. | |||||
| Answer to: Why does my car burn oil? 2004 Chevrolet Malibu Maxx V6 LT, 176K miles | 21Relevance | 1 year ago | Oskool | Submit Your Question HERE | |
| Oil burning is usually caused by not changing the engine oil every 5,000 miles or once a year for naturally aspirated engines. Every 3,000 miles for turbo charged engines. The Car Care Nut recommends changing the oil every 6 months instead of 12 months. Following the car manufacturer recommendations of 10,000 mile oil changes will almost certainly lead to oil burning. The service intervals car manufacturers recommend is designed to get the car through it's warranty period. Once the warranty expires and the car starts burning oil and the transmission starts slipping because the 'lifetime fluid' was never changed, they'll gladly sell you a new car. Here's a 3D video on how the lubricant system of an engine works. A video on how piston rings work. piston rings are supposed to spin and move freely inside the piston ring groove. Car Care Nut talking about his experience working at the Toyota dealership and showing how 10,000 mile oil changes cause piston rings to seize up in the groove. (12:40 timestamp) Royalty Auto showing what 10,000 mile oil changes did to a Land Rover with only 87,000 miles. | |||||
| Answer to: Ford misfires after compression test | 21Relevance | 2 years ago | Justin Shepherd | Submit Your Question HERE | |
| Cylinder 2 is worn. The wear should be within 10% of the highest value in your compression test, 140 PSI differs from 170 PSI by 18%. You can't correct this unless you rebuild the engine. Ensure your spark plugs are tight and there is no cross-threading. I had an issue with misfiring in my '79 Catalina a couple years ago. It would only misfire when cold. When it's warmed up, it was fine. I had changed the spark plugs 4 months prior and a couple had wiggled loose. They sealed when the engine got hot. That car has a V8, not an I3. Providing you used OEM coils and a turbo, a spark plug could have wiggled loose. That's the only explanation I can think of. | |||||
| Answer to: After driving through high water, cylinder 1 has low compression | 16Relevance | 3 years ago | MountainManJoe | Submit Your Question HERE | |
| No, there's nothing electrical in there. It's just a piston moving inside a cylinder. Either you have failed piston rings, or the engine ingested water and bent a rod. If you're lucky. There's a tiny chance the piston ring just has some rust on it and is getting hung up. You could try soaking it in some lube. | |||||
| Is there a detail video that help rebuild an engine | 16Relevance | 4 years ago | Elate46 | Submit Your Question HERE | |
| I have a 2012 Suzuki I've been told the piston ring has gone bad. The mechanic is charging $5,500 to replace the engine. I don't have that kind of money. I'll do the work of changing the rings myself , but most YouTube video only show people speeding through removing engines and parts. Is there a good detail video that shows how to breakdown and rebuild an engine? Is there a video that shows how to get to the piston without removing the engine from the car? If not can someone do a video showing how to breakdown an engine to replace piston rings. | |||||
| Excessive vibration at idle | 16Relevance | 4 years ago | Corolla9generation | Submit Your Question HERE | |
| Hello everyone! My new 2006 Matrix (manual, 120k miles) has cylinder glazing going radially around near the top of the cylinder. It is three lines of glazed area with honing between them. Literally It is as if the piston rings are wearing out that part of the cylinder wall as the lines look to resemble the location of piston rings when the piston is at TDC. I will post a video from my endoscope later. Does anyone have any preliminary ideas? I just bought this car and im hoping to keep it until its got at least 300k miles on it. Cheers | |||||
| RE: Timing issues 08 crown vic | 16Relevance | 4 years ago | nta98 | Submit Your Question HERE | |
| If the knock is coming form the piston hitting the valves, no. typically once the piston hits the valve it bends it, and a bent valve wont seal the combustion chamber, causing it to not make compression. I think you have to pull the head, make sure the piston isn't damaged, then basically redo the head. | |||||