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Showing results for tags 'blue smoke'.
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I scrolled through a few pages looking for another post on the issue with no luck, so I apologize if this has come up before. I have a 2021 Silverado 1500 Custom, 5.3L 6 speed. About 80k km on it. A couple months ago I had it parked on a bit of a hill outside my office, facing uphill. Probably had been sitting for a couple hours since I last drove it. I started it up and a big cloud of blue/black smoke came out of the tail pipes and smelled like burnt oil. Smoke cleared pretty quick and that was it. I didn't see this happen again for another few weeks, but once again, parked the exact same way as before, I started it up and a huge cloud of smoke and burnt oil smell. I had parked the same way lots of times in between both smoke shows. I haven't seen it do this since. I had it in at Chev today for an oil change and the tailgate recall and I told them about this. They had a red seal tech check it out. No signs of leaking valves, no codes thrown and he couldn't recreate it. They charged me $170 to tell me they couldn't find anything wrong except the oil level was low (but they didn't say by how much) but that it's normal for these trucks to burn 3L or so of oil every 10k km. They even had documentation from GM Canada backing that up. But just to be safe, they want to track the oil consumption and every 1000km, I have to go back to the dealership, let the truck sit for 15 min and then they check the oil level and log it. I'm in the last 20k km of my powertrain warranty so if something is going on, I want to get it dealt with before it costs me. Anyone experience something similar? My buddy suggested adding a catch can, but to also have the valves and rocker taken apart and cleaned out. This is way above my skill set and sounds expensive. I don't buy the "this is normal operation" argument because if it was, I would have seen it happening sooner. My driveway is level and I've never seen it happen when I start it at home, so I definitely think hill parking it is a piece of the puzzle.
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Hey guys and gals, Long time creeper, first time poster. I currently have a 2011 silverado 1500, with 163,622 miles on it. It's a 5.3 vortec engine. It smokes from the exhaust a light blue exhaust that's mixed with a grey/white exhaust. It stops smoking after roughly 10 seconds of running. Haven't noticed it while driving. It also doesn't smoke every start-up. It rough idles when in park. I replaced the plugs and wires a couple weeks ago, and I started misfiring on cylinder 8 after the change, before the change it was cylinder 5. The only codes it's thrown is for the misfiring. I also pulled plug 8 after the codes to check it and found oil on it. I did a combustion gas leak test and the liquid stayed the same color (blue). I'm starting to lose my mind. Any thoughts, suggestions to try? Also, as of now....I've noticed no loss in power at the moment.
