Car smoking really bad fresh turbo
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From: San Diego CA
Car smoking really bad fresh turbo
I did not know where else to post this thought it would be best to try here. Im having a real problem with my TII powered first gen smoking really bad at idle and im suspecting the turbo. It will make clouds of smoke that will cover the street in 30sec. If beat on the car for a few mins the smoke will go away but comes back after a few mins at idle. At first I thought it might be the oil control rings because it is a Jspec motor and has been sitting for a long time. But it does not smoke on start up and while crusing around. When I first ran it with the stock turbo it smoked so I sent it out and had it rebuilt with a 60-1 compessor upgrade put it back on still smokes. I dont know what else to do I thought it could be the oil return line getting backed up. Does anyone have any ideas? Im trying to get this thing ready to drive to 7 stock. Here is a pic of how my oil return line is run.
From what I understand the oil return line is gravity feed, if thats the case then your oil may be getting backed up in the turbo and blowing passed the seals. If theres a way to do it make the oil return line so it does not dip down below the fitting on the block. Hope that helps.
Banned. I got OWNED!!!
Joined: Aug 2002
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From: chatsworth,Ca.
its definatly your return line , , i would suggest using a 90 degree fitting out of the turbo, that way it has more angle in that direction and it can get more angle going down as well... look at a factory drain, 90 degree out the bottom of the turbo, another 90 into the front cover... also , what kind of oil seal did they put in the turbo?
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From: San Diego CA
Ive fixed the problem. I did not have a PCV setup just vented it out the top of the oil neck. Put one in and the problem is gone now. I still think my oil return is a problem though. My oil return line is a -8 90deg fiting coming out of the turbo then to -8 line and wraps around and goes into the front cover in the stock 86-88 location. Im not sure if -8 is big enough its not as big as stock but the smoking is gone now. When I can I think I will install -10 line to the front cover and get it out at a smother angle.
680rwhp12a
The guy who did my turbo said it had a carbon seal in it and he changed it to somthing else. I think he said it was a stock garret dynamic seal that he changed it to not sure though.
Thanks for the input guys.
680rwhp12a
The guy who did my turbo said it had a carbon seal in it and he changed it to somthing else. I think he said it was a stock garret dynamic seal that he changed it to not sure though.
Thanks for the input guys.
Originally posted by RX-7-8593
Ive fixed the problem. I did not have a PCV setup just vented it out the top of the oil neck. Put one in and the problem is gone now.
Ive fixed the problem. I did not have a PCV setup just vented it out the top of the oil neck. Put one in and the problem is gone now.
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From: Canberra - Aus
An oil catch can, perhaps.
Maybe someone can explain how this would cause a problem. All it is, is hot oil fumes coming out so you don't get a pressure biuld up inside the engine... Right?
Mine still vents into the intake (the stock method I believe) which is very bad because it coats the inside of your intake pipes with an oil film and will reduce the effectiveness of you intercooler.
Am I on the right track here? Does this rant make any sense?
Maybe someone can explain how this would cause a problem. All it is, is hot oil fumes coming out so you don't get a pressure biuld up inside the engine... Right?
Mine still vents into the intake (the stock method I believe) which is very bad because it coats the inside of your intake pipes with an oil film and will reduce the effectiveness of you intercooler.
Am I on the right track here? Does this rant make any sense?
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From: San Diego CA
1FastT2
Ive seen the pics under the hood of your car (very nice) and the way you have your oil neck vented was exactly like mine just vented to open air. What I did to fix the problem does not look all that pretty but it will work for now and I will tidy it up a bit later. What I did is use the two lower vacume lines on the upper intake manifold (the ones on that face the altanator) . The two lines are teed together into one large hose that goes to a check valve (to keep boost from blowing back into the oil pan) after the check valve its hooked to the top of the oil filler neck. Once I did this all of the smoking went away there is no smoke at all. If I pinch off the line while the engine is running it will start smoking in about 30sec. I talked to the guy who did my turbo about this and he said its important too have that hooked up. With out it the oil backs up in the return line because of pressure in the pan. This forces oil past the seals and into the exhaust (and somtimes the compressor side) it also cause oil to coak on the seals when the engine is shut off.
S2-13bt
Ive tried the oil catch can and it does nothing but get the oil that would slosh or blow out of the pan and up into the filler neck. The point of my PCV valve was to suck the pressure out of the pan thats forcing pressure on the oil return line. Because this is setup after the TB (just like the stock one) there is little or no oil to get into anything except maby the upper intake manifold. After an hour of running I checked the lines and there was no oil in them.
Ive seen the pics under the hood of your car (very nice) and the way you have your oil neck vented was exactly like mine just vented to open air. What I did to fix the problem does not look all that pretty but it will work for now and I will tidy it up a bit later. What I did is use the two lower vacume lines on the upper intake manifold (the ones on that face the altanator) . The two lines are teed together into one large hose that goes to a check valve (to keep boost from blowing back into the oil pan) after the check valve its hooked to the top of the oil filler neck. Once I did this all of the smoking went away there is no smoke at all. If I pinch off the line while the engine is running it will start smoking in about 30sec. I talked to the guy who did my turbo about this and he said its important too have that hooked up. With out it the oil backs up in the return line because of pressure in the pan. This forces oil past the seals and into the exhaust (and somtimes the compressor side) it also cause oil to coak on the seals when the engine is shut off.
S2-13bt
Ive tried the oil catch can and it does nothing but get the oil that would slosh or blow out of the pan and up into the filler neck. The point of my PCV valve was to suck the pressure out of the pan thats forcing pressure on the oil return line. Because this is setup after the TB (just like the stock one) there is little or no oil to get into anything except maby the upper intake manifold. After an hour of running I checked the lines and there was no oil in them.
Originally posted by RX-7-8593
1FastT2
Ive seen the pics under the hood of your car (very nice) and the way you have your oil neck vented was exactly like mine just vented to open air. What I did to fix the problem does not look all that pretty but it will work for now and I will tidy it up a bit later. What I did is use the two lower vacume lines on the upper intake manifold (the ones on that face the altanator) . The two lines are teed together into one large hose that goes to a check valve (to keep boost from blowing back into the oil pan) after the check valve its hooked to the top of the oil filler neck. Once I did this all of the smoking went away there is no smoke at all. If I pinch off the line while the engine is running it will start smoking in about 30sec. I talked to the guy who did my turbo about this and he said its important too have that hooked up. With out it the oil backs up in the return line because of pressure in the pan. This forces oil past the seals and into the exhaust (and somtimes the compressor side) it also cause oil to coak on the seals when the engine is shut off.
1FastT2
Ive seen the pics under the hood of your car (very nice) and the way you have your oil neck vented was exactly like mine just vented to open air. What I did to fix the problem does not look all that pretty but it will work for now and I will tidy it up a bit later. What I did is use the two lower vacume lines on the upper intake manifold (the ones on that face the altanator) . The two lines are teed together into one large hose that goes to a check valve (to keep boost from blowing back into the oil pan) after the check valve its hooked to the top of the oil filler neck. Once I did this all of the smoking went away there is no smoke at all. If I pinch off the line while the engine is running it will start smoking in about 30sec. I talked to the guy who did my turbo about this and he said its important too have that hooked up. With out it the oil backs up in the return line because of pressure in the pan. This forces oil past the seals and into the exhaust (and somtimes the compressor side) it also cause oil to coak on the seals when the engine is shut off.
Joined: Oct 2001
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From: Fort Branch, Indiana
Originally posted by RX-7-8593
1FastT2
Ive seen the pics under the hood of your car (very nice) and the way you have your oil neck vented was exactly like mine just vented to open air. What I did to fix the problem does not look all that pretty but it will work for now and I will tidy it up a bit later. What I did is use the two lower vacume lines on the upper intake manifold (the ones on that face the altanator) . The two lines are teed together into one large hose that goes to a check valve (to keep boost from blowing back into the oil pan) after the check valve its hooked to the top of the oil filler neck. Once I did this all of the smoking went away there is no smoke at all. If I pinch off the line while the engine is running it will start smoking in about 30sec. I talked to the guy who did my turbo about this and he said its important too have that hooked up. With out it the oil backs up in the return line because of pressure in the pan. This forces oil past the seals and into the exhaust (and somtimes the compressor side) it also cause oil to coak on the seals when the engine is shut off.
S2-13bt
Ive tried the oil catch can and it does nothing but get the oil that would slosh or blow out of the pan and up into the filler neck. The point of my PCV valve was to suck the pressure out of the pan thats forcing pressure on the oil return line. Because this is setup after the TB (just like the stock one) there is little or no oil to get into anything except maby the upper intake manifold. After an hour of running I checked the lines and there was no oil in them.
1FastT2
Ive seen the pics under the hood of your car (very nice) and the way you have your oil neck vented was exactly like mine just vented to open air. What I did to fix the problem does not look all that pretty but it will work for now and I will tidy it up a bit later. What I did is use the two lower vacume lines on the upper intake manifold (the ones on that face the altanator) . The two lines are teed together into one large hose that goes to a check valve (to keep boost from blowing back into the oil pan) after the check valve its hooked to the top of the oil filler neck. Once I did this all of the smoking went away there is no smoke at all. If I pinch off the line while the engine is running it will start smoking in about 30sec. I talked to the guy who did my turbo about this and he said its important too have that hooked up. With out it the oil backs up in the return line because of pressure in the pan. This forces oil past the seals and into the exhaust (and somtimes the compressor side) it also cause oil to coak on the seals when the engine is shut off.
S2-13bt
Ive tried the oil catch can and it does nothing but get the oil that would slosh or blow out of the pan and up into the filler neck. The point of my PCV valve was to suck the pressure out of the pan thats forcing pressure on the oil return line. Because this is setup after the TB (just like the stock one) there is little or no oil to get into anything except maby the upper intake manifold. After an hour of running I checked the lines and there was no oil in them.
MIKE
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