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Post by brynbetts on Feb 9, 2014 15:06:28 GMT -6
I used my car starter earlier this week as I was leaving school and noticed the exhaust coming from the car was blue, but only lasted for about 5 seconds at the most. I know that blue exhaust means its burning oil, but I haven't noticed it since then or up to that point. The car didnt run any different. Not too sure what to make of the situation, so any advice is welcomed.
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Post by renaldo0613 on Feb 9, 2014 22:38:49 GMT -6
You need to do a couple WOT to clearthe carbon build up. I used to WOT mines atleast once a week.
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scottydl
Super Moderator 
There's nothin' like an American V-8...
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Post by scottydl on Feb 10, 2014 7:15:13 GMT -6
If you still have around 84k miles on your car as listed in your sig, I wouldn't think that you would have leaking o-rings yet which would normally cause the constant blue smoke oil burning that you mentioned.
Try some good hard WOT's as mentioned, and maybe a Seafoam treatment through the intake to burn out additional buildup. The brake booster vacuum line is often a good place to suck up the Seafoam fluid into the intake, let it sit in there for awhile with the engine off, start up and clouds of white puffy smoke will billow out the exhaust as dissolved buildup is burned out. Youtube had lots of Seafoam videos.
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tigger
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Post by tigger on Feb 10, 2014 18:05:53 GMT -6
The 4.0 does seem to benefit from a good romp every so often, not sure if that applies to the 3.5 though. Shouldn't hurt anything and at least it would be fun!
Blue smoke ONLY at start-up is a pretty good indication of worn/old valve seals. You could try a high mileage oil to try to recondition them, may help.
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Post by renaldo0613 on Feb 10, 2014 18:07:46 GMT -6
WOT is recommended via owners manual.
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Post by Ryan E. on Apr 9, 2019 17:49:17 GMT -6
Hey everyone, I have a question:
I've noticed over the past few years that whenever I push my 2001 Aurora V6 a little harder than I normally do (past 3,500 RPM, intentional or unintentional) it seems to increase the chance of it smoking upon startup the next day or even a few hours of letting it sit with the engine still a little warm. For the most part I drive my car like a grandma, and in day-to-day driving (all city, unfortunately) I don't exceed 2,300 RPM, and by doing this I normally do not see any physical smoke from burning oil, nor do I smell any smoke at all upon starting it the next morning or within the same day. Today as I was passing someone, I got it up to around 4,000 RPM and when I started it a few hours later to go somewhere else a big puff of blue-white, wispy smoke came out from the exhaust, which went away within 20 seconds or so. When I got home, I checked under the hood with the engine still running and I opened the oil cap and put my hand over the opening and I didn't feel much blowby (with no physical puffing of smoke coming out at all), so I'm assuming my piston rings are still pretty good. It seems to me that as long as I don't exceed 3,500 RPM, or push it hard, I don't have this issue and I don't see any physical sign/smell of oil burning from the exhaust, but past 3K it appears that a lot of oil is getting into the combustion chamber somehow.
What exactly could be the issue? Could it be sticking oil control rings or semi-worn out valve stem seals? Is it better that I continue to avoid harder acceleration and, in a way, keep driving it like a "grandma"? I know a lot of people on this forum say that you need to push these engines hard often to get rid of "build-up" or whatever but I'm afraid that by doing that I'm making the occasional problem worse and wearing out any seals faster. I already leak enough oil as it is...
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Post by phewop118 on Apr 9, 2019 18:25:21 GMT -6
My 2 cents: my experience with 6 cars with Northstars or Northstar derivatives over the years is that these engines need to be pushed at least semi regularly, as long as you out have sufficient oil in the crankcase and it's fully warmed up. My oldest LX5 has over 200k miles - it burns very little oil (1 qt every 4-5k miles). I make a point to floor it at least once per day, running it close to redline (now that could be a problem if your transmission is on the edge too). Definitely clears out any carbon buildup and keeps them running strong.
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tigger
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Post by tigger on Apr 9, 2019 22:52:50 GMT -6
I make a point to floor it at least once per day, running it close to redline... Preach! 10+ year believer here,lol! |
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RCA1186
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Rob
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Post by RCA1186 on Apr 10, 2019 8:05:53 GMT -6
I came to say the same, I regularly push my car, at least once a day. This is even recommended to rotate the valves and prevent buildup of carbon on the older Chrysler 3.5s.
There is a lot of belief out there that some of the bad rep the Northstars get is from all the old ladies driving like...well...old ladies in their Cadillacs haha
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arthurpendragon
Aurora Watcher
The closer you get, to the Meaning; The sooner you know, that you're DREAMING.. (Black Sabbath)
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Post by arthurpendragon on Apr 27, 2019 10:03:45 GMT -6
I came to say the same, I regularly push my car, at least once a day. This is even recommended to rotate the valves and prevent buildup of carbon on the older Chrysler 3.5s. There is a lot of belief out there that some of the bad rep the Northstars get is from all the old ladies driving like...well...old ladies in their Cadillacs haha Take a motor from and Indy 500 car. Drive it like an old lady. What do you get? Black Flag! |
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