2005 GMC Envoy Logo

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Lauri Imel-Flowers Posted on Aug 25, 2018
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05 Envoy - Started smoking at start 2 or 3 wks ago. Oil was 1qt low, added oil. Smoking at start up got worse yesterday. Oil level was 2qts low. Added oil again. Now check engine light flashes going 30+ mph. Is idling rough like it's wants to stall. Help me please.

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Steve Pack

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  • GMC Master 7,124 Answers
  • Posted on Aug 26, 2018
Steve Pack
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You need to have engine checked and possibly rebuilt or replaced, this not a quick easy fix.

5 Related Answers

Anonymous

  • 1450 Answers
  • Posted on Nov 10, 2008

SOURCE: car won't start wants to turn over but nothing.

sounds like you have a blown head gasket this would explain loss of coolant and running poorly excessive smoke.

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chayRunner

  • 9 Answers
  • Posted on Mar 29, 2009

SOURCE: oil consumption, no smoke, no leaks

Yes a crappy PVC valve can cause some of your problems but not necessarily all of them, they are cheap, I always replace it to start. The air cleaner housing being full of oil is like how the oil is being consumed. In addition to a PVC valve, there may also be a blow-by hose running into the housing. check to see what other hoses go into the housing & which ones have oil coming from them. I'm not familiar with the "Motor Honey" you mentioned but I rarely add additives to my Engine oil, especially if they are thickeners. The only stuff I recommend is a Quaker state or similar "High Mileage Oil". These semi-synthetic oils have additives to swell old rubber & cork seals in older engines and can help reduce oil consumption & leakage. Again, it may not be a total solution, but it couldn't hurt to drain out all of the existing oil & replace with a high mileage type & also change the filter at the same time. Never mix it with other oils, despite the manufacturer telling you it may be safe to do so.

Anonymous

  • 6784 Answers
  • Posted on Apr 02, 2009

SOURCE: Oil Indicator light on Volkswagen Passat 1.8L Turbo

Hi. there are many issues that can cause this type of situation. the oil pressure sending unit may be malfunctioning. there could be a faulty module or the wires and connectors could also be lose or faulty as well. you could also have a clogged oil filter but, that usually isn't the main issue here. the most common problem here would be a bad oil screen in the pan or a faulty oil pump. you will find the problem in these areas above.

Please rate and god bless:)

Anonymous

  • 232 Answers
  • Posted on Apr 09, 2009

SOURCE: water in oil

I have yet to see a cracked head on a 22R,so more than likely a blown head gasket,unless you overheated and warped the head and worst case a hole between the cylinder wall and water jacket(this is pretty rare).The only way to tell short of using some expensive tools or taking to your local shop is to pull the head and inspect the gasket for leakage wich is generally fairly obvious(separation of the gasket layers,oil and water between water and oil passages)and checking the head deck for warpage.If there is obvious leakage in the gasket you're looking at a top end gasket set if the head is slightly warped you can get away with a thick graphite head gasket,I personally use these as they are very forgiving on slightly warped and scratched head decks and inepensive also,but a severly warped head will require milling at a machine shop or replacement.

Håkan Sterner

  • 74 Answers
  • Posted on May 23, 2009

SOURCE: 1999 saab wont stay running while idling

I had a similar problem with my Saab, stalled at red lights when idling,

As suggested by Greg I suspected the IAC and was just about going to the repair shop and have the ECU codes pulled.

Anyway, I decided it could be a good idea to check the engine air filter first. It turned out to be rather dirty so I changed it, This solved the problem in my case, the car has worked perfectly ever since.

Sometimes it can be very simple!


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I bought this car a few days ago and it started smoking from under hood and smelled like hot oil, checked the oil level it is now showing low where it was full but can see no oil leaking from under

every possibility of a fire in the sump
2 possible explanations
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2-- badly worn rings allowing compression fire to bypass and ignite oil gasses
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