Blue-ish smoke from exhaust - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

gunmetalrps · 02-12-2009, 06:54 PM

i just wanted some feedback.

its a sohc KA. had a rebuilt, resurfaced head, new valve seals/guides about March 08. also new headgasket. its not blowing a lot of smoke only when im at full throttle around 5.5k-7.5k rpms. not overheating AT ALL. still pulls strong. if i drive normal theres no smoke at all. when it does smoke its kinda blue-ish. im thinking piston rings since the block is at about 190xxx. but what about 02 sensor or fuel mixture running rich. i know it cant be the valve seals or head gasket. also, it doesnt seem to be losing much oil( even though the oil pan is kinda leaking oil)

any ideas?

02-12-2009, 06:54 PM	#1
gunmetalrps Leaky Injector Join Date: Sep 2007 Location: socal Age: 38 Posts: 61 Trader Rating: (0) Feedback Score: 0 reviews	Blue-ish smoke from exhaust i just wanted some feedback. its a sohc KA. had a rebuilt, resurfaced head, new valve seals/guides about March 08. also new headgasket. its not blowing a lot of smoke only when im at full throttle around 5.5k-7.5k rpms. not overheating AT ALL. still pulls strong. if i drive normal theres no smoke at all. when it does smoke its kinda blue-ish. im thinking piston rings since the block is at about 190xxx. but what about 02 sensor or fuel mixture running rich. i know it cant be the valve seals or head gasket. also, it doesnt seem to be losing much oil( even though the oil pan is kinda leaking oil) any ideas? __________________