# Sentra Spec-V Burning Oil **URL:** \ **Category:** Canada Nissan Automotive\ **Created:** [September 29, 2008, 5:43pm UTC](https://forums.speedlife.net/t/sentra-spec-v-burning-oil/136391 "2008-09-29T17:43:07Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![mikulas](https://avatars.discourse-cdn.com/v4/letter/m/dfb087/32.png) [@mikulas](https://forums.speedlife.net/u/mikulas)\ **Post date:** [September 29, 2008, 5:43pm UTC](https://forums.speedlife.net/t/sentra-spec-v-burning-oil/136391/1 "2008-09-29T17:43:07Z")
I have an 02 stock sentra spec-v which always burned a litre or two between oil changes and I wasn’t too concerned. I’m alright with checking oil every couple of thousand km. In the last week or two the oil consumption became ridiculous. It burns about 1 litre every 200km. If this had been a steady increase, I’d call it wear or maybe that pre-cat issue I keep reading about. This sudden change makes it seem like something just broke. The car has about 140k on it. It’s definitely not leaking the oil. I can see a cloud of smoke when I rev the engine in the garage. My mechanic suggested I replace the engine. He’s usually pretty good with advice but he didn’t run a lot of tests so I wanted to get a second opinion before spending a few grand. I know this could be caused by a lot of things but most of them require a rebuild or new engine in which case I’m spending the money anyway. I’m looking for potential causes which would be easy to fix that I should test for before replacing the engine. Anyone have any ideas? I already checked the PCB valve. Failing that, the names of any good shops in the GTA that know their engines would be appreciated. Any feedback is appreciated. ---
**Author:** ![JOHNYSLEEPERB15](https://avatars.discourse-cdn.com/v4/letter/j/b77776/32.png) [@JOHNYSLEEPERB15](https://forums.speedlife.net/u/JOHNYSLEEPERB15)\ **Post date:** [September 30, 2008, 6:31am UTC](https://forums.speedlife.net/t/sentra-spec-v-burning-oil/136391/2 "2008-09-30T06:31:07Z")
Dude I have a 04 stock sentra spec-v at 140K… It’s definitely not leaking the oil. But everytime i do oild change one liter od oil is grained… so i have to check my oil level freaquantly too… that’s ok… but the pre-cat and butterfly issue is crap…i don’t know it is causing it or if i should leave it (corss my fingers) that it won;t cus engine damage… so the question is… why change engine now cus i can wait it out and do it when it does breack down…???😕 :mad: 😕 ---
**Author:** ![mikulas](https://avatars.discourse-cdn.com/v4/letter/m/dfb087/32.png) [@mikulas](https://forums.speedlife.net/u/mikulas)\ **Post date:** [October 2, 2008, 9:10pm UTC](https://forums.speedlife.net/t/sentra-spec-v-burning-oil/136391/3 "2008-10-02T21:10:32Z")
Just an update. I took the car into the dealership to see what they have to say. I tell them that I have a sentra that’s burning oil. They say 2.5? Standard? I say yes. They say it’s the pre-cat and I need a new engine. So I ask about the recall on the pre-cat. They look up my vin and the computer shows the recall maintenance was performed back in 2005. I’m not impressed. They knew there was a problem with the pre-cat back then, they performed some recall maintenance, and it ended up failing anyway. Sounds like they didn’t do enough to fix the original problem. ---
**Author:** ![JOHNYSLEEPERB15](https://avatars.discourse-cdn.com/v4/letter/j/b77776/32.png) [@JOHNYSLEEPERB15](https://forums.speedlife.net/u/JOHNYSLEEPERB15)\ **Post date:** [October 3, 2008, 11:12am UTC](https://forums.speedlife.net/t/sentra-spec-v-burning-oil/136391/4 "2008-10-03T11:12:34Z")
When you take your Nissan in for the official precat recall, here’s what the dealer will do: - Reprogram the Engine Control Module (likely to lean out the air/fuel mixture) - Test the pre-catalyst to determine if it needs to be replaced - Inspect the pre-catalyst to determine if more extensive repairs are needed - Install new heat shields - Change your oil/filter IMPORTANT: There are numerous instances of precats failing even AFTER the official Nissan recall procedure. The only 100% proven and effective solution is to remove the precat entirely.