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Old 10-07-2013, 08:56 AM   #1
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Blue smoke

Hey guys, I have a 01 gt with 140k miles one it off-road h pipe cat back and cold air. Was driving it to work and saw some blue smoke come out the back at idle. It doesn't happen every time but it happens. I've gotten lots of opinions on what it could be some good some really bad but I'm not losing power. It only happens at idle sometimes just looking for some other opinions. thanks guys
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Old 10-07-2013, 09:09 AM   #2
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Blue smoke is oil getting into the combustion chamber which is not good. Worse case it is your rings and you need a new engine. It could also be valve stem seals or an issue with the PCV. Best way to see if your rings are good is a compression/leakdown check.

However, if you aren't losing power the FIRST thing I would do is switch to a thicker weight oil and see if that cures it. 5w-40 in the winter, 10w-40 in the summer.
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Old 10-07-2013, 10:13 AM   #3
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That's what I was told but they said they don't think it's rings because I'm not losing power. I was also told to just rebuild my heads and it would solve it.
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Old 10-07-2013, 10:59 AM   #4
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you could poor fuel into tour cylinders and if the fuel leaks threw within a couple minutes then your rings are bad
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Old 10-07-2013, 12:37 PM   #5
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you could poor fuel into tour cylinders and if the fuel leaks threw within a couple minutes then your rings are bad
Why fuel?
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Old 10-07-2013, 01:04 PM   #6
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I wouldn't use water lol
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Old 10-07-2013, 01:23 PM   #7
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Why fuel?
It wont contaminate the oil and it will evaporate if you do a compression test and a cylinder is bad you can pour a little oil in cylinder (a cap full) into it and test it again, if it stays the same then your head needs to be rebuilt and if it gets better then your rings are bad
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Old 10-07-2013, 01:26 PM   #8
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It wont contaminate the oil and it will evaporate if you do a compression test and a cylinder is bad you can pour a little oil in cylinder (a cap full) into it and test it again, if it stays the same then your head needs to be rebuilt and if it gets better then your rings are bad
Oh I did not know that. Good thing because I would have used water
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Old 10-07-2013, 01:30 PM   #9
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Oh I did not know that. Good thing because I would have used water
Please never ever EVER touch a motor. Take your car to Jiffy Lube to get your oil done before you do it.
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Old 10-07-2013, 04:23 PM   #10
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lol i hear Orange Juice works good if you don't have any extra fuel

---------- Post added at 03:23 PM ---------- Previous post was at 03:22 PM ----------

the citrus will line the cylinder and help prevent the rings from going bad
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Old 10-08-2013, 11:15 AM   #11
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Please never ever EVER touch a motor. Take your car to Jiffy Lube to get your oil done before you do it.
Hey you gotta learn somewhere!
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Old 10-08-2013, 08:48 PM   #12
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It's probably the turbo leaking oil, I told you to do a stand alone oiling system I know you wanted to keep it a secret but if you wanted to fix it tell people the truth
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Old 10-08-2013, 10:12 PM   #13
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Blue smoke is oil getting into the combustion chamber which is not good. Worse case it is your rings and you need a new engine. It could also be valve stem seals or an issue with the PCV. Best way to see if your rings are good is a compression/leakdown check. However, if you aren't losing power the FIRST thing I would do is switch to a thicker weight oil and see if that cures it. 5w-40 in the winter, 10w-40 in the summer.
Do not go to a heavier weight oil. If you could see the pin size oil return holes in the heads for the oil to go through back down to the pan you would know why. Just use the 5w20 or you will be sorry.
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Old 10-08-2013, 11:42 PM   #14
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Do not go to a heavier weight oil. If you could see the pin size oil return holes in the heads for the oil to go through back down to the pan you would know why. Just use the 5w20 or you will be sorry.
I use nothing but 5w30

My friends use 10w30 for years , no problems

I've even seen people use thicker oil and no problems
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Old 10-09-2013, 10:27 AM   #15
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My understanding is Its all about viscosity. And how long it takes oil to thin out at operating Temperature. I've also known guys who have ran a little thicker oil with no problems.
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Old 10-09-2013, 11:20 AM   #16
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Do not go to a heavier weight oil. If you could see the pin size oil return holes in the heads for the oil to go through back down to the pan you would know why. Just use the 5w20 or you will be sorry.
I've had modulars and pushrods apart before, the holes are not pin sized. You will not hurt the car running a higher weight either. Just don't beat on a cold engine like an idiot and you'll be fine.
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Old 10-09-2013, 08:36 PM   #17
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I use nothing but 5w30

My friends use 10w30 for years , no problems

I've even seen people use thicker oil and no problems
Well I have over 205,000 on my GT. It has always had 5w20. It does have the same blue smoke at idle with no cats and o/r x pipe. I have been told this is normal when the cats are removed. My brothers started doing the same thing when we did away with his cats and added o/r x pipe.
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