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-   -   Oil burning (http://www.toyota-supra.info/forums/mkiii-supra/9664-oil-burning.html)

furia 09-12-2007 08:11 AM

Oil burning
 
My supra smells like burnt oil. Now there is no black smoke coming out of the back. Also I must mention that the head was recently done. I would do a compression test but I cant get my tester untill the weekend(fuck borrowing stuff) and the burnt oil smell is going to give me sleepless nights untill then.
What I find wierd is that whener I top up the oil A LOT of black smoke(oil) comes out of my tailpipe. After a few mins it goes away. I notice there is a hose comming from right underneath the oil fill hole. Is that where the PCV valve should be? I wonder if oil is just thrown out in that hose. What is that hose anyways?

Also worth mentioning is that I use the Castrol syntetic 10w40 with 3 quarters of a bottle Lucas syntetic aditive. My oil pressure at highway speed is at 4.

redmaro 09-12-2007 08:16 AM

Black smoke isnt oil.

furia 09-12-2007 08:19 AM

Whops yes thats gas leaking, none of that. I mean to say dark-bluish deff the oil kind.

mrnickleye 09-12-2007 02:21 PM

4psi is low at hwy speed, but normal at idle.

blue (ish) smoke is oil.

the hose is there to link (air vapor wise) the block to the top end. leave it alone.

the pcv system has no valve. the 2 hoses come off the valve covers and "Y" into the throttlebody. see the FAQs section for proceedures to clean that out so it works right.

http://www.toyota-supra.info/forums/...ead.php?t=7930

furia 09-12-2007 03:58 PM

Quote:

Originally Posted by mrnickleye
4psi is low at hwy speed, but normal at idle.

blue (ish) smoke is oil.

the hose is there to link (air vapor wise) the block to the top end. leave it alone.

the pcv system has no valve. the 2 hoses come off the valve covers and "Y" into the throttlebody. see the FAQs section for proceedures to clean that out so it works right.

http://www.toyota-supra.info/forums/...ead.php?t=7930

Oil pressure is 4 kg/cm^2 which translates to 57 PSI.
So I guess I will just have to wait to do my compression test and see where I am going from there.

mrnickleye 09-13-2007 03:57 AM

A compression test may be pretty good, and you could still have some bad oil rings on a piston or 2. That can let it smoke, and still run good, until a spark plug fouls. Pull all the plugs and check them for oil contamination.

furia 09-13-2007 04:03 AM

In the end I think it is actually a leaking injector that produces the smell. I bought a new compression tester and everything came out within specs. One plug looks washed by gas and I can actually hear one injector leaking. My fuel pump does not stop running so I am positive now that one injector is leaking. I supose a leaking injector would create a wierd smell.

mrnickleye 09-13-2007 02:04 PM

Yes it will (smell). And....after you repair it (very soon), better change the motor oil, as it will be full of fuel.

At the shop, we like to use new injector when the customer isn't a tight wad, because rebuilts can have problems, now or sooner than a new one.

furia 09-13-2007 08:36 PM

I just got a complete(6) set of brand new injectors off ebay.
http://cgi.ebay.ca/ws/eBayISAPI.dll?...0%3D%26fvi%3D1

Is that a decent brand?

mrnickleye 09-15-2007 04:36 AM

Quote:

Originally Posted by furia
I just got a complete(6) set of brand new injectors off ebay.
http://cgi.ebay.ca/ws/eBayISAPI.dll?...0%3D%26fvi%3D1

Is that a decent brand?

Haven't heard of that brand. probably China. Let us know how the work out. They might work fine.

At my shop, we only use new, because remans fail to much.


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