smoke when slowing down

[nitrometh66]

Hi.

I have a 93 240sx with sr20det swap. I am running turbo off of a rb25det. Have greddy intercooler. Greddy profec spec 2 boost controller set a stock boost. Greddy airnx intake and apexi n1 exaust system. Recently my exaust started smoking a bluish white smoke when i start to slow down and come to a stop. Anybody have any sugestions on what it could be or where a good place to start would be?

[rogoman]

You may have a blown head gasket or a piston ring failure. Do a compression test and a leakdown test on all cylinders.

[EviL inside]

smoke on decel (high vacuum situation) is usually valve seals or turbo seals.

if there's oil in the intake, i'd say turbo seals,,if not, valve seals.

[2056515]

i would think that its burning oil and and maybe also coolant. probably blown head gasket