another smoking issue - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Cedarcbr · 05-26-2009, 07:53 PM

k guys so i recently freshened up my SR. did a new oil pump, timing set, hg, intake and exhaust gaskets, water pump, t-stat, clutch.
ive searched and havent found what im looking for.
anyways so my problem is everything was fine running good afteri repositioned my cams. but now after about 250 miles my car started smoking and smelling burnt, its bluish smoke with a oil and something else smell.
it only smokes when im decelerating in a gear. like going down hill in any gear and then i give it a little gas it will smoke only for 2 or 3 seconds. it boosts, pulls, sounds, runs wonderful.
im pretty sure it is a bad valve seal but i wanted some input b4 i go and tear into the head.
thanks in advance guys

PinkPanther · 05-26-2009, 07:59 PM

Sounds like bad valve seals or guides. generally they pull oil under vacuum; such as idle or decel. could also be turbo seals but it would smoke constantly at idle.

05-26-2009, 07:53 PM	#1
Cedarcbr Leaky Injector Join Date: Sep 2007 Location: Cedar City Ut. Age: 34 Posts: 80 Trader Rating: (0) Feedback Score: 0 reviews	another smoking issue k guys so i recently freshened up my SR. did a new oil pump, timing set, hg, intake and exhaust gaskets, water pump, t-stat, clutch. ive searched and havent found what im looking for. anyways so my problem is everything was fine running good afteri repositioned my cams. but now after about 250 miles my car started smoking and smelling burnt, its bluish smoke with a oil and something else smell. it only smokes when im decelerating in a gear. like going down hill in any gear and then i give it a little gas it will smoke only for 2 or 3 seconds. it boosts, pulls, sounds, runs wonderful. im pretty sure it is a bad valve seal but i wanted some input b4 i go and tear into the head. thanks in advance guys

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05-26-2009, 07:59 PM	#2
PinkPanther Zilvia Junkie Join Date: Oct 2004 Location: Johnston City, IL Age: 35 Posts: 372 Trader Rating: (3) Feedback Score: 3 reviews	Sounds like bad valve seals or guides. generally they pull oil under vacuum; such as idle or decel. could also be turbo seals but it would smoke constantly at idle.