94siludeturbo

I am running a H23A1 with a turbonetics T3/T4 turbo. Well the problem is when i get on it and boost it up its fine. But when i let off the gas i get a decent amount of smoke. Its like a blueish white smoke but when i get back on the gas it seems do to aways. could it be my pvc valve needing feeding oil into the intake manifold? would an oil catch can solve this problem? Or if its anything else what could it be.

TypeSLO

i'm trying to make sense of what you just blurped out.... how long have you been boosting? how do you have your pcv hooked up? how many miles on the turbo? compression test? you sure it only smokes when you let off the throttle?

94siludeturbo

ive been boosting for about 2 years. the pcv vavle is hook up from the valve cover straight back to the intake manifold. And i believe there is about 6 to 8K on the turbo. still need to do a compression check. but yeah it only seems to smoke when i get off the gas. when i have the wide open throttle nothing seems to be coming out but right after i close it up from full throttle it just starts to smoke for about 10 seconds or so then its gone until i open the throttle, then let it off

hotimportcrx

Bad Valve Seals - Blue smoke under Deceleration (when you let off the gas)...most likely the valve seals ...if the piston rings were bad it would always smoke...do a compression test first and post the numbers...If you dont have a compression tester they sell one at walmart for 20$.....VERY GOOD BUY

TypeSLO

if it is the valve seals, you don't have to pull the motor out. it can actually be done with the head still bolted to the block. need valve spring compressor, string, patience.

94siludeturbo

yeah i have everything for a compression check and a leak down check i will post the numbers as soon as i get them on and a side note i change the pistons and rings last winter when i fried them..put stock pistons and rings back in did not have the funds to get low compression pistons