Car smokes ALOT

[sam_bo3]

I got a my car running put about 1500 miles on it and changed the oil. I used Mobile 1 10w30 and now get passed by a cloud of smoke everytime I stop. I also have an exhaust leak on the underside of the manifold to the block but I don think that has anything to do with the smoke but thought that I mention it. Is the synthetic oil to slippery to use on the turbo or should I try going with 40 weight? The pipe to the intercool is coated on the inside with oil. The turbo is a freshly rebuilt stock sr.

[r34 gtr]

Dude, I would be worried about that turbo, there shouldnt be oil in there like that. Do you know for sure the turbo was rebuilt or did someone just tell you that when they sold it to you? How long ago was it rebuilt?

Second, you need to give us a little more info. How many miles on the engine? Is it smoking all the time or just when you come to a stop? Does it smoke more on acceleration?

[sam_bo3]

I just got the car running. I think the sticker on the engine said it was around 50K. I finally got it lined out enough to drive after 2 years on and off. The stock turbo was bad so I got one from the forums here. If it wasn't rebuilt it had one heck of clean up on it. The play in it felt fine. Just enough to feel ovement up and down and none side to side. I have put around 1500 miles on it in the last 2 months of daily driving. Not driving it hard. I hit 89 once (when passing downhill). I was going to get the regulator and pump but I need a more reliable car than this right now. It runs fine other than the smoke.

As far and when it smokes. I have a down pipe for the exhaust. it exits under the floorboard of my car. I don't really see much smoke when I am driving as my driver's side mirror is broke. It wasn't smoking at idle but any kind of thottle input produces a significant amount. Tonight when I pulled in to the drive way it appeared to be smoking more than usual. I have 30 mile one way commute to work of high. 4 stops total.

On a side note it was acting like a had a vacuum leak. It wouldn't idle and would randomly miss at high way speeds and under heavy load. It would also act up a bit when spooling the turbo boost between -10 and 0. Then I changed the oil and the checked the air filter. I must have adjusted the leak because the car ran great afterwards. The next day I notice the smell of burnt oil and figured it to be the little bit of oil that dripped on the manifold. A day or 2 after than I caught a red light and a small cloud left the front end of my car. I checked it out when I got home and found it was coming from the manifold and the intercooler pipe was wet.

Sorry if I went a little over board with detail. I have had 4 1/2 hours sleep in 2 days.

[r34 gtr]

No man, the detail is great!

What kind of oil was in there before? have you always run Mobil One? If this was your first change to synthetic oil you might want to switch back to some dino oil and see how it does. Might you have overfilled it a bit? I know when I put too much oil in my car is smokes until it has burnt off all the excess. I dont want to say its your turbo seeing as it just started doing it after an oil change, and not after a good thrashing or something. Regardless oil is getting past some seals and burning up when you step on the gas...

I love the open downpipe haha. Isnt it a bit loud driving 30 minutes each way to work?

What kind of vacuum are you pulling at idle?

[Masterdebater]

im sorry, i didnt notice if u said what color the smoke is..if its smoking bad when u come to a stop and off acceleration then point ur finger at the turbo. mine got smoke in the cabin when i had oil leaking from the oil return onto the exhaust housing.whit/bluish smoke is oil so check eerything, changing to synthetic, being thin oil, could have found an oil leak better than previous oil.

[r34 gtr]

Good call, and if the smoke is very white it could be either coolant (if its sweet smelling, but i doubt thats the case), or valve guides. I dont think it sounds that serious though, and since you mentioned oil I kind of assumed it was blue smoke.

[sam_bo3]

Thanks for the replies! The smoke is definitely oil very white and smells like a bad oil change.

I was using mobile dino oil. I wasn't sure how much to put in it. I worked at a dealership and stole a 94 240sx and an 88 pulsar shop manual before I left. The ca in the pulsar called for 4 qts so that is what I put in. The stick WAS showing less then 1/4 in above the lead tip on the stick so maybe a little too much.

Know that I watch am watching it it smokes mostly on positive pressure (that is when I smell it in the car) and see the bug killer on decel even at 35-40 coasting down hill in 4th.My gas milage has drop as well from 26 to around 20. It idles around 20 and hits 30 in decel. Off subject but when timing my car to get it down to 12 TDC (don't flame me I can't remeber if the proper label is BTDC or not.it is correct on my car)on the crank pully I am fully over on the cam sensor. I was just curious if that is normal I doubt that it is.

[sam_bo3]

I have low standards as far as exhaust goes. I grew up in a small town pop. 150. My friend got caught cutting doughnut in the highway 3 miles out of town. His exhaust was driveline sections cut to 24 in. so they looked like glass pacts on his 85 chevy. My other car is a 73 malibu this 12 in glass pacts dualed to exit inforn of the rear tires. my ears ring if I drive for more than 2 hours. The 240 is the quietest car I have.

[Masterdebater]

i would try and switch back to dino oil just so u can pinpoint if ur ca just isnt liking the feel of synthetic... also try a compression test to get a look how things are doing internally. but from the info given, i would say its the turbo. if it wasnt rebuilt nicely then the new thin, synthetic oil could be creeping between seals. im just spit balling what i would do in the situation just so u have ideas to go off so i hope it helps a little at least . sry for the bad grammar too, my keyboard sticks haha

[r34 gtr]

That sounds like a good plan to me. It could well be oil sneaking past the turbo seals. Try some Castrol GTX 10w40 or similar and see if it helps.

Timing should be 15 degrees BTDC, and you shouldnt be all the way over on the CAS. It is probably in your interest to see if the timing belt isnt one tooth over on one of the timing gears. I know thats how it usually happens to me. Try this stuff and see if it doesnt help. If not I would suggest having the turbo checked out by someone who knows about them.

[Masterdebater]

yea that is odd about the timing... mine has been doing something similar to me but that because i have a few leaks here and there im sure. im in the midst of taking the timing cover off to check the belt too tho before any damage is done if it is the belt. so checking the belt might also be a good idea on ur part too lol.