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Post by Paulus17 on May 10, 2019 14:15:20 GMT
 So Mrs P went to work Tuesday morning in the Rav and I noticed some Grey/Blue smoke come out the exhaust, bad news, it hadn't been started for a while and was expecting the battery to be flat but no it was fine, good news :TU: So since then she's been going in the Yaris again, so I started the Rav up today and again Grey/Blue smoke came out the exhaust and a strong smell of petrol :yes: Now looking on line it seems oil could be getting past the seals which harden, must be Navy seals  and that you can put a treatment in that softens the seals again makes the oil thicker, and stops the oil leak and Blue /Grey smoke??? So could this be happening because I have changed the oil and the MAF sensor. The oil did seem more thick as I mentioned when I did the oil change so perhaps the treatment was already in the engine when we bought it, do these treatments work if not is the engine on it's way out???
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Post by unclebob on May 10, 2019 14:46:00 GMT
No oil additives fix blue oil smoke for long , can be used as a quick fix to sell a car ....if it smokes at idle and pull away is going to be valve stem seals (head off job), now if you are a lucky boy changing the PCV might fix the problem....see here  Have know different grades of oil to cause a problem but don’t remember if its the grade or brand that could fix the problem......try PCV valve first 👍🏻 |
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Post by Paulus17 on May 10, 2019 15:01:21 GMT
Thanks Bob but how do I go about checking it?
Just had a quick look on line and there should be some suction while the engines running on tik over??
Do I have to undo the nut you are pointing at, does it need cleaning or replacing?
Only noticed the smoke when the Ravs been sat for a while and is only there on it's first start up after that it seems ok.
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Post by unclebob on May 10, 2019 15:13:31 GMT
The PCV you’re not checking just replacing, just unscrew it and replace it not worth cleaning, years ago they were plastic and got replaced on every major service.
Take it for a drive and get it nice and hot and return home and let it idle on the drive, give it and occasional rev up and check for blue smoke , the PCV is just the cheapest option before oil changes then possible cylinder head off.
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Post by unclebob on May 10, 2019 15:15:24 GMT
Just a thought...take it the oil level is not well over the top limit ??
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Post by Paulus17 on May 10, 2019 15:19:22 GMT
The PCV you’re not checking just replacing, just unscrew it and replace it not worth cleaning, years ago they were plastic and got replaced on every major service. Take it for a drive and get it nice and hot and return home and let it idle on the drive, give it and occasional rev up and check for blue smoke , the PCV is just the cheapest option before oil changes then possible cylinder head off. OK cheers Bob, just sent Kingo a mail on a price for one if they're still available, if not where could I get one from? Engine level is still spot on the dot when I changed the oil :TU: |
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Post by Paulus17 on May 10, 2019 15:54:14 GMT
OK so I got a price from Kingo, cheers John :TU: but will wait till Mrs P gets home and see what she reckons as I think she is fed up of the Rav anyway so doubt she will want the head coming off though mine might be |
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Post by Paulus17 on May 10, 2019 17:02:51 GMT
Will it be ok to drive still?
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Post by charliefarlie on May 10, 2019 17:14:29 GMT
How long did the smoke last  If only for a short while the engine could be burning oilnthag has seeped past the valve stem seal while it’s been stood for a while. The treatments to stop oil burning don’t last long at all. It will be fine to drive so long as it’s not smoking really badly or overheating. Take the oil filler cap off the top of the engine and see if it’s passing smoke out of it..... |
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Post by firemac on May 10, 2019 17:25:25 GMT
This might be a silly question, Paul, but are you sure it was blue smoke? Is it puffing the smoke all the time? If it only occurs when you first start up in the morning, are you sure it's not steam, which is grey but can look bluish in the right light? That is quite normal and should disappear fairly rapidly as the exhaust warms up.
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Post by philip42h on May 10, 2019 18:12:24 GMT
 So Mrs P went to work Tuesday morning in the Rav and I noticed some Grey/Blue smoke come out the exhaust, bad news, it hadn't been started for a while and was expecting the battery to be flat but no it was fine, good news  So since then she's been going in the Yaris again, so I started the Rav up today and again Grey/Blue smoke came out the exhaust and a strong smell of petrol  Now looking on line it seems oil could be getting past the seals which harden, must be Navy seals  and that you can put a treatment in that softens the seals again makes the oil thicker, and stops the oil leak and Blue /Grey smoke??? So could this be happening because I have changed the oil and the MAF sensor. The oil did seem more thick as I mentioned when I did the oil change so perhaps the treatment was already in the engine when we bought it, do these treatments work if not is the engine on it's way out??? I'm not a mechanic, don't know what I'm talking about, but merely highlight a couple of items from the evidence given for possible consideration by those who are and do ...  Could the mixture simply be too rich on start-up? |
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Post by charliefarlie on May 10, 2019 18:16:10 GMT
So Mrs P went to work Tuesday morning in the Rav and I noticed some Grey/Blue smoke come out the exhaust, bad news, it hadn't been started for a while and was expecting the battery to be flat but no it was fine, good news So since then she's been going in the Yaris again, so I started the Rav up today and again Grey/Blue smoke came out the exhaust and a strong smell of petrol Now looking on line it seems oil could be getting past the seals which harden, must be Navy seals and that you can put a treatment in that softens the seals again makes the oil thicker, and stops the oil leak and Blue /Grey smoke??? So could this be happening because I have changed the oil and the MAF sensor. The oil did seem more thick as I mentioned when I did the oil change so perhaps the treatment was already in the engine when we bought it, do these treatments work if not is the engine on it's way out??? I'm not a mechanic, don't know what I'm talking about, but merely highlight a couple of items from the evidence given for possible consideration by those who are and do ... Could the mixture simply be too rich on start-up? Mixture is controlled by the ECU......Don’t think it can be altered by the user. |
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Post by firemac on May 10, 2019 18:19:28 GMT
So Mrs P went to work Tuesday morning in the Rav and I noticed some Grey/Blue smoke come out the exhaust, bad news, it hadn't been started for a while and was expecting the battery to be flat but no it was fine, good news So since then she's been going in the Yaris again, so I started the Rav up today and again Grey/Blue smoke came out the exhaust and a strong smell of petrol Now looking on line it seems oil could be getting past the seals which harden, must be Navy seals and that you can put a treatment in that softens the seals again makes the oil thicker, and stops the oil leak and Blue /Grey smoke??? So could this be happening because I have changed the oil and the MAF sensor. The oil did seem more thick as I mentioned when I did the oil change so perhaps the treatment was already in the engine when we bought it, do these treatments work if not is the engine on it's way out??? I'm not a mechanic, don't know what I'm talking about, but merely highlight a couple of items from the evidence given for possible consideration by those who are and do ... Could the mixture simply be too rich on start-up? A rich mixture would usually produce black smoke. Blue smoke is oil, grey smoke is steam, not uncommon on a cold engine on start up. |
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Post by jasehutch on May 10, 2019 19:50:23 GMT
Paul , does the smoke smell of burning oil ?
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Post by Paulus17 on May 10, 2019 19:59:53 GMT
How long did the smoke last  If only for a short while the engine could be burning oilnthag has seeped past the valve stem seal while it’s been stood for a while. The treatments to stop oil burning don’t last long at all. It will be fine to drive so long as it’s not smoking really badly or overheating. Take the oil filler cap off the top of the engine and see if it’s passing smoke out of it..... Charlie the smoke is only there on first start up, when Mrs P drove off the other morning nothing could be seen coming out as she drove off and today I had it idling and nothing at all was coming out, just on the first start up? Ill try the filler cap tomorrow but the engine sounds fine. We were going down to Tewkesbury in it tomorrow which would have been it's longest journey for us so will it be ok do you think? |
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So Mrs P went to work Tuesday morning in the Rav and I noticed some Grey/Blue smoke come out the exhaust, bad news, it hadn't been started for a while and was expecting the battery to be flat but no it was fine, good news :TU: 
and that you can put a treatment in that softens the seals again makes the oil thicker, and stops the oil leak and Blue /Grey smoke???
If only for a short while the engine could be burning oilnthag has seeped past the valve stem seal while it’s been stood for a while. 
