# White Smoke Billowing From Exhaust After Repairs **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** nissan, xterra, exhaust-system, engines\ **Created:** [June 25, 2020, 4:27pm UTC](https://community.cartalk.com/t/white-smoke-billowing-from-exhaust-after-repairs/166333 "2020-06-25T16:27:47Z")\ **Posts on this page:** 1\ **Showing post:** 37
**Author:** ![thegreendrag0n](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/thegreendrag0n/32/9265_2.png) [@thegreendrag0n](https://community.cartalk.com/u/thegreendrag0n)\ **Post date:** [July 1, 2020, 2:08pm UTC](https://community.cartalk.com/t/white-smoke-billowing-from-exhaust-after-repairs/166333/37 "2020-07-01T14:08:13Z")
> [@ok4450](#): > > I have never heard of converter substrate getting into a cylinder I’ve heard before that early-2000s Nissans have this problem, it was specifically the reason I avoided Nissans between 2000 and 2010. This was discussed on this forum before: > [@2002 Pathfinder-Catalytic Converter sucked into engine?](https://community.cartalk.com/t/2002-pathfinder-catalytic-converter-sucked-into-engine/105928/9): > > After seeing Tester’s reply, I did some searching and reading on this. The best I can tell is Nissan’s QR25DE and VQ35DE engines, between 2002-2005, had their variable valve timing set to include EGR functionality. This momentary “pulling in” of some of the exhaust gas worked fine if the pre-cats were in good condition. However, if anything ever caused the pre-cats to begin to fail, the substrate powder would get sucked back into the combustion chambers, resulting in oil burning. It’s not cl… VQ40DE on XTerra is a “big brother” of VQ35DE. Here is some more from Nissan-specific sources: > **[Engine ate the catalytic converter stuffing](https://www.nissanmurano.org/threads/engine-ate-the-catalytic-converter-stuffing.9902/#post-113941)** > > This past week my engine hasn't been purring so quietly so I got it over to the dealer to have them check it out - turns out the engine inhailed some of the stuffing from the catalytic converter. This in turn is causing sticky valves and main... > **[Catalytic Converter Turned to Dust](https://www.thenewx.org/threads/catalytic-converter-turned-to-dust.147098/)** > > Hi I recently had my engine die on me - Nissan said one of the cats had turned to dust which got sucked in the engine basically killing it. after a full rebuild - block, heads etc I was advised on removing the other cats. > > the car is running ok but... --- _[View the full topic](https://community.cartalk.com/t/white-smoke-billowing-from-exhaust-after-repairs/166333)._