Oil burning

furia · 09-12-2007, 08:11 AM

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.

09-12-2007, 08:11 AM	#1
furia Stock Join Date: Aug 2007 Location: Oakville, ON Posts: 18	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. Last edited by furia; 09-12-2007 at 08:14 AM.

09-12-2007, 08:16 AM	#2
redmaro walbro fp Join Date: Mar 2006 Location: arizona Posts: 432	Black smoke isnt oil. __________________ MK3, Auto, Turbo.

09-12-2007, 02:21 PM	#4
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	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 __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08. Last edited by mrnickleye; 09-12-2007 at 03:30 PM.

09-13-2007, 03:57 AM	#6
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	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. __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08.

09-13-2007, 02:04 PM	#8
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	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. __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08.

09-12-2007, 08:19 AM	#3
furia Stock Join Date: Aug 2007 Location: Oakville, ON Posts: 18	Whops yes thats gas leaking, none of that. I mean to say dark-bluish deff the oil kind.

09-13-2007, 04:03 AM	#7
furia Stock Join Date: Aug 2007 Location: Oakville, ON Posts: 18	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.

09-13-2007, 08:36 PM	#9
furia Stock Join Date: Aug 2007 Location: Oakville, ON Posts: 18	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?

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