This Nissan Altima was sold (used) to me with this problem hidden, and a few weeks later, it began to get noticeable, and it continued to get worse. I ended up losing around ,000 total. I had this car checked by a master mechanic who works at a local dealership and does excellent work, and noone had thought this car would give any trouble. After several weeks, we noticed it eating approximately 1qt / wk of oil, and as well having issues starting and misfiring (all caused by the same thing). To those of you thinking of purchasing a Nissan, my advice is don’t, and especially not from Armo Motors. They sold this engine (First gen QR25DE) for 4 years, in the 2002 – 2006 Nissan Altima 2.5S, the 2002 – 2006 Sentra SE-R, and the 2005 Frontier, and ALL THREE have issues. Nissan has had a few recalls on them, but still refuses to admit that all those cars had issues. They claim that although the engine is the same, and shows the same issues, that it is only truly their fault in a few cases. My particular car had two major issues that Nissan shoved under the carpet. The first is that the mesh that holds the catalytic converter material in place can come off, and cat material can clog the exhaust, or worse, get pushed into the engine. The second is that the screws that hold the butterfly valves in place can come loose and literally get sucked into the engine. Both of these will cause increased oil consumption, and (evenually) can lead to a dead engine. After contacting the dealer at Armo Motors: http://www.yellowpages.com/fort-walton-beach-fl/mip/armo-motors-455256640, I asked if he could possible help with part of rebuilding the engine, and he said he had a shop that could do it, and he would pay half. We were about to get it rebuilt, and when we went to ask for his half, he said ‘I’ve talked to my lawyer, and he says it’s best that I don’t help you because it would imply that there was a warranty on the car, which would give you further grounds to sue’ and hung up. I bought a Honda Civic since then and took the hit; Still waiting from that settlement from Nissan though.
http://www.youtube.com/watch?v=5r_9qcSQBfc is a continuation of problems I had