blue smoke when i shift,, read please****

[deetz]

aight i know its usually the pcv valves bad when it does this so today i replaced it with a new one, still does it! do you think my valve cover baffle things are clogged? because when i stuck the new pcv valve in then took it back out it had crud on the end, is there a way to clean those baffles? or do i need a different valve cover

 

[robs90tsi]

It means that youre burning oil, blue is oil, white is antifreeze, and black is fuel, you could have something like a blown turbo seal or something to that effect, have you ever done a compression test? How many miles (hard or easy) do you have on your current motor?? Oh, and "crud" under your valve cover isnt desirable, pull that thing and clean the bad stuff outta there and put it back on (with a new gasket of course), also try using a can of seafoam.

 

[Talesin]

Are you venting, or recirculating your BOV? If you're venting... well, there's your most likely culprit. You'll run stupid-rich between shifts.

 

[deetz]

Are you venting, or recirculating your BOV? If you're venting... well, there's your most likely culprit. You'll run stupid-rich between shifts.

im running a hks ssqv bov, with a almost brand new t-25 turbo, the comression was good about 3 weeks ago and i havent been runnin high boost, something like 10-14, and it only happens when i let off to shift, it doesnt smoke during throttle, nor at idle or deaccellerating, if im slowing down in gear and i hit the gas a bit itl puff a bit, its really not a huge cloud real light, if any of that helps, oh and im running a safc and i just got it widebanned about a week ago, so i know im not running rich

 

[robs90tsi]

im running a hks ssqv bov, with a almost brand new t-25 turbo, the comression was good about 3 weeks ago and i havent been runnin high boost, something like 10-14, and it only happens when i let off to shift, it doesnt smoke during throttle, nor at idle or deaccellerating, if im slowing down in gear and i hit the gas a bit itl puff a bit, its really not a huge cloud real light, if any of that helps, oh and im running a safc and i just got it widebanned about a week ago, so i know im not running rich

You should recirculate that BOV, our cars will not run properly with a vented BOV unless you have a MAS behind it, such as a GM MAS with MAFT. But Ive never heard of a vented BOV causing you to burn oil before, fuel is black smoke, not blue..........

 

[Talesin]

There is a recirculation kit available for the HKS SSQV. If you're venting, recirculate it.

And please read the Newbie FAQ.


(Robs, sometimes blackish smoke can look blue as it diffuses... had a similar problem when I had a severe boost leak. :b Thought I'd killed my turbo spool, turned out that two of the TB bolts came loose. I'm thinking it's the recirc as it only happens on a shift. A dead spool would happen all the time, but especially under boost; a HG would just do it all the time period. Haven't had a PCV go bad yet, so I can't say on that one... but if he's venting, that's an obvious run-rich that's known to cause puffs of smoke. Sadly, a number of 'performance' shops still insist that it makes no difference if 2Gs vent or not, when it's just less of a pronounced problem.)

 

[deetz]

There is a recirculation kit available for the HKS SSQV. If you're venting, recirculate it.

And please read the Newbie FAQ.


(Robs, sometimes blackish smoke can look blue as it diffuses... had a similar problem when I had a severe boost leak. :b Thought I'd killed my turbo spool, turned out that two of the TB bolts came loose. I'm thinking it's the recirc as it only happens on a shift. A dead spool would happen all the time, but especially under boost; a HG would just do it all the time period. Haven't had a PCV go bad yet, so I can't say on that one... but if he's venting, that's an obvious run-rich that's known to cause puffs of smoke. Sadly, a number of 'performance' shops still insist that it makes no difference if 2Gs vent or not, when it's just less of a pronounced problem.)

ive been told by many pro shops around here the super sequential doesnt need to be recirc'd.

 

[jking29]

As long as you are running the stock mas it DOES need to be recirculated. If you vent to the atmosphere with a stock mas, the ecu has no way of knowing as it is only reading airflow at the mas. When you vent, the airflow increases as it essentailly becomes a hole in your uicp, then the ecu reads higher airflow and increases fuel to compensate which makes your engine go pig rich.

 

[deetz]

As long as you are running the stock mas it DOES need to be recirculated. If you vent to the atmosphere with a stock mas, the ecu has no way of knowing as it is only reading airflow at the mas. When you vent, the airflow increases as it essentailly becomes a hole in your uicp, then the ecu reads higher airflow and increases fuel to compensate which makes your engine go pig rich.

well last saturday i widebanned and it was around 10.5 to 11. and i was also told the safc would correct that? so i am doin this all wrong then?

 

[jking29]

When you were did the wideband, you were doing it at WOT. The BOV opens when you BACK OFF the pedal and I'm guessing that you are probably going to about 9:1 when it opens. The afc will do nothing to compensate for this.

 

[deetz]

When you were did the wideband, you were doing it at WOT. The BOV opens when you BACK OFF the pedal and I'm guessing that you are probably going to about 9:1 when it opens. The afc will do nothing to compensate for this.

aight i JUST ordered a recirc kit, and having it overnited well monday'd here, hopefully thatle help me out a bit, i still think sumthings clogged, im gonna run seafoam through my intake and see if theres any excess crud in it

 

[deetz]

aight i JUST ordered a recirc kit, and having it overnited well monday'd here, hopefully thatle help me out a bit, i still think sumthings clogged, im gonna run seafoam through my intake and see if theres any excess crud in it

well i seafoamed, it, changed the valve cover, changed plugs, changed the pcv vlave, and now it barely puffs a bit, is there any way i can just bypass that vaccum line that runs from the pcv to the intake?

 

[deetz]

well i seafoamed, it, changed the valve cover, changed plugs, changed the pcv vlave, and now it barely puffs a bit, is there any way i can just bypass that vaccum line that runs from the pcv to the intake?

ok since noone wanted to answer my question i went ahead and plugged the intake tube that runs to the pcv valve and im now venting both tubes comming off my manifold to the atmosphere, and gues what guys,,, IT STILL PUFFS BLUE SMOKE BETWEEN SHIFTS! what else could this be?? turbo?? i hope nuthin internal is bad, the car runs too damn strong for it to be a bad ring or sumthing, it hasnt lost any power

 

[supravw]

Say bye bye to your T-2slow. Your turbo is on its way out. My 14b did the same thing, no loss in power or boost. But the turbo was screwed. Motor blew before the turbo was totally shot tho.

 

[deetz]

Say bye bye to your T-2slow. Your turbo is on its way out. My 14b did the same thing, no loss in power or boost. But the turbo was screwed. Motor blew before the turbo was totally shot tho.

i was 90% sure that was what it was, ive pushed that poor lil turbo to its limits many times, but the funny thing is it doesnt have shaft play, would a blown turbo have shaft play ?

 

[supravw]

i was 90% sure that was what it was, ive pushed that poor lil turbo to its limits many times, but the funny thing is it doesnt have shaft play, would a blown turbo have shaft play ?

Mine only had minimal shaft play. It doesn't nessicarily have to have a lot of shaft play to be blown. Hey, gives you an excuse to upgrade! haha

 

[IslanderTsi]

I would guess your rings are on there way out if you think your tubo is good. it should be if its brand new right. Unless it was installed improperly