Edmunds.com | Inside Line | Auto Observer Your Account | Help | Directory
You are here:
![[F]](http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com/media/townhall/webxicons/site.gif){kind=small}
Forums
Sedans Nissan Altima Nissan Altima Engine Failures
500 messages, Last post on Nov 29, 2009 at 8:42 PM
You are in the Nissan Altima Forum. Your Hosts are pat & karens
|
|
|---|---|
|
Replying to: electricdesign (Mar 01, 2008 3:37 pm) 6. "And finally, please help me understand how a bad cat causes cylinder wear and oil consumption. Does a clogged cat cause the exhaust and cat chemicals to back-up into the engine? Does that corrode or wear the cylinder walls? Since I'm now using 1 quart / 200 miles, does that sound to you like it's too late to save it? And if I'm burning 1 quart / 200 miles, whether it's from scored cylinders, bad head gasket, or leaky valve guide seals, why don't I have a sooty black carbon buildup at the tail pipe?" The chemical ceramic material (like sand) comes out of the cat and into the exhaust ports and into the cylinders and eats up the cylinder walls and piston rings, allowing oil to leak up past the piston rings into the combustion chamber and burn up with the gasoline. The oil burns clean, so you don't get much soot, I'm not sure why it burns so clean, maybe computer controls helps it to burn more completely by advancing timing and adjusting the air/fuel ratio. 7. Finally, give me what ever information that you can, but it appears to me at this time, if you want to keep driving this car, you will need to set aside a pile of money and set some time aside out of your schedule and put your car on the calendar to do some major work on it. After everything else externally is checked out, you will need to tear down the engine and remove the head for an "Exploratory Teardown", send the head out to be resurfaced and rebuilt (New valve seals and check for cracks or leaks), And check the cylinders very carefully, lightly file the top of the engine block with a long straight file to be sure the deck is flat. If cylinders are good, you may put the whole thing back together like I did, but if cylinders are bad, the engine has to come out. Then you can decide to either rebuild that engine, or replace it with a rebuilt engine. Good Luck, E.D. in Sunny Florida
|
|
|
|
|
Replying to: electricdesign (Mar 01, 2008 3:44 pm) Thanks for the detailed reply. I have been off line for a couple days. I will read thoroughly and get back to you. |
|
|
Hello all, I wanted to let everyone in on what is going on with my very own 2002 2.5 altima with 85,000 miles. About 3 weeks ago I was driving home from work and the OIL light came on. I thought it was just from driving the car from Indiana to Florida and putting so many miles on it in a short time that may have burnt off some oil. I checked it and there was no oil on the dipstick. This freaked me out a little bit and I took it to get the oil changed. About 10 or so days later the OIL light and also the SES light came on. I checked the oil again and there was once again no oil on the dipstick. I put more in it myself and checked to make sure the level was correct after running it for a bit and the oil was BLACK. Very strange after putting brand new oil in. My dad looked around the Internet and found the forums on this problem. I took my car to NISSAN to get it diagnosed and they said the oil was mettalic and that showed signs of wearing on the cylinders. Now that it was diagnosed I called Nissan and after around a week or two ago got an answer back saying they couldn't do anything about it since it was out of warranty, which is understandable but something doesn't seem right about the whole ordeal. Now I am stuck in a perdicament to either rebuild, replace or trade. Any suggestions?
|
|
|
|
|
Replying to: seanakio (Mar 05, 2008 7:43 am) |
|
|
Replying to: seanakio (Mar 05, 2008 7:43 am) Thanks for sharing your experience and I hope it works out for the best for you.
|
|
|
|
|
Replying to: laura19 (Mar 05, 2008 8:12 am) Once the rapid oil consumption starts and the oil turns black quickly, it is TOO LATE, the engine is TOAST! The Pre-Cat has already eaten the inside of the engine, ate out the clyinder walls and piston rings! A new Precat or parts will NOT fix a toasted engine, only a new engine will, and eventually the same thing will happen again, given enough time and miles. It looks like laura19 got the right idea and decided to get rid of the car, no sense in throwing good money after bad. I'm sorry she spent so much money trying to fix it, but you get to a point that you must throw in the towel, because you simply can not afford to lose anymore money. It's just too bad that many people buy cars without first researching them on the Internet. Researching on the Internet saves so much hassle and money! Warn everyone that you can about problematic cars! Well, good luck to all you guys, and I hope the best for you or at least better luck next time. E.D. in Sunny Florida |
|
|
|
I red online that back in 2003 there was a recall on the Pre cat. They replaced it with a hollow one this recall was for the 2002 altimas. That is Y manally Verry few of those mottal Year cars are having sum problems. The recall was NOt that whell noen. Has anyone elce Heard about this recall. Happy MOtoring. The altima is Not a bad car. Thankyou guys for reading My posting. Sorry about sum of My spelling. I am Leaguly blind I try my best cant drive the cars lov beeing around Them. Thankyou for taking the time to reed Marco.
|
|
|
Replying to: marcogallo1986 (Mar 11, 2008 6:17 am) of course its not, it's actually one of the best selling cars out there right now. 4or 5 people complaining on a MB about problems they had with theirs doesn't make a car a lemon. But I do understand their frustration. If I bought a car and it needed major work before it even hit 100k I'd : 1. Be pissed off 2. refuse to ever buy a car from that company again. |
|
|
|
|
Replying to: electricdesign (Mar 01, 2008 3:37 pm)
|
|
|
Replying to: scttcrssmn (Mar 11, 2008 8:00 pm) link title
|
|
You are here:
Forums
Sedans Nissan Altima Nissan Altima Engine Failures
New? Join Now!
Forum Tools
Search Forums
Browse by Vehicle
2010 Nissan Altima
Browse by Board
Browse by Topic
Today's Chats
