Some on decel - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

lv240s14 · 04-04-2008, 04:20 AM

so basically its a new motor broke it in with 500 miles nice driving then slowing started giving more and more power. now i am get alot of smoke on decel... like alot, oil presure is fine no loss of power just smokes a shitload after i boost and let off...... the turbo was rebuilt awhile ago. i think thats it but i'm not sure. do motor's ever smoke on decel because of other reason's.....

*fliprayzin240sx* · 04-04-2008, 10:13 AM

Could be a bad seal on the turbo. Does it do it too on idle once the engine gets hot?

Sileighty_85 · 04-04-2008, 11:54 AM

^^Agree, who rebuilt the turbo?

lv240s14 · 04-04-2008, 04:55 PM

limit engineering which is recommended by garrett's website...

Sileighty_85 · 04-04-2008, 05:00 PM

Did you replace the Valve Guide Seals?

lv240s14 · 04-04-2008, 05:03 PM

yes the head was rebuilt

lv240s14 · 04-04-2008, 05:04 PM

can someone change the thread topic to " smoke on decel. turbo?"

*GSXRJJordan* · 04-04-2008, 05:38 PM

I could be smoking all the time, but since when you're accelerating there's more exhaust to mix with the smoke, you don't see it.

If it's not the turbo seals (which is most likely), it could be a bad PCV valve/no catch can.

lv240s14 · 04-04-2008, 05:48 PM

no its not smoking all the time. it just smokes on decel and a shitload.

*fliprayzin240sx* · 04-04-2008, 05:55 PM

Color smoke? Black, blue-ish, white?

lv240s14 · 04-04-2008, 06:37 PM

its white i am pretty sure its the coolant seal on the turbo...

*GSXRJJordan* · 04-04-2008, 08:24 PM

Easy way to test that ~ if you have SS lines, route the water feed to the water return, and put two M14x1.50 bolts into the turbo's water line ports. The turbos are oil-lubricated anyway, won't hurt just for a test.

04-04-2008, 04:20 AM	#1
lv240s14 Zilvia Member Join Date: Jan 2005 Location: Las vegas Age: 25 Posts: 279 Trader Rating: (0)	Smoke on decel!!!!!!! turbo?? so basically its a new motor broke it in with 500 miles nice driving then slowing started giving more and more power. now i am get alot of smoke on decel... like alot, oil presure is fine no loss of power just smokes a shitload after i boost and let off...... the turbo was rebuilt awhile ago. i think thats it but i'm not sure. do motor's ever smoke on decel because of other reason's.....

04-04-2008, 10:13 AM	#2
fliprayzin240sx SLINKY + ESCULATOR = Fun Times Join Date: Aug 2002 Location: Ass Crack of Japan Posts: 8,414 Trader Rating: (5) Rides Gallery: fliprayzin240sx	Could be a bad seal on the turbo. Does it do it too on idle once the engine gets hot? __________________

04-04-2008, 11:54 AM	#3
Sileighty_85 Nissanaholic! Join Date: Dec 2006 Location: Wishing Back in Okinawa -_- Posts: 2,324 Trader Rating: (0)	^^Agree, who rebuilt the turbo? __________________ 後輪駆動車１番 1991 Built SR GT2871R -363whp 1998 S14 W/RB25- Rebuild in Progress

04-04-2008, 05:00 PM	#5
Sileighty_85 Nissanaholic! Join Date: Dec 2006 Location: Wishing Back in Okinawa -_- Posts: 2,324 Trader Rating: (0)	Did you replace the Valve Guide Seals? __________________ 後輪駆動車１番 1991 Built SR GT2871R -363whp 1998 S14 W/RB25- Rebuild in Progress

04-04-2008, 05:38 PM	#8
GSXRJJordan [JEFE S14] Join Date: May 2006 Location: << 626 >> Posts: 7,177 Trader Rating: (14) Rides Gallery: GSXRJJordan	I could be smoking all the time, but since when you're accelerating there's more exhaust to mix with the smoke, you don't see it. If it's not the turbo seals (which is most likely), it could be a bad PCV valve/no catch can. __________________ TEAM SUSPECT is alive. www.JordanInnovations.com*

04-04-2008, 04:55 PM	#4
lv240s14 Zilvia Member Join Date: Jan 2005 Location: Las vegas Age: 25 Posts: 279 Trader Rating: (0)	limit engineering which is recommended by garrett's website...

04-04-2008, 05:03 PM	#6
lv240s14 Zilvia Member Join Date: Jan 2005 Location: Las vegas Age: 25 Posts: 279 Trader Rating: (0)	yes the head was rebuilt

04-04-2008, 05:04 PM	#7
lv240s14 Zilvia Member Join Date: Jan 2005 Location: Las vegas Age: 25 Posts: 279 Trader Rating: (0)	can someone change the thread topic to " smoke on decel. turbo?"

04-04-2008, 05:48 PM	#9
lv240s14 Zilvia Member Join Date: Jan 2005 Location: Las vegas Age: 25 Posts: 279 Trader Rating: (0)	no its not smoking all the time. it just smokes on decel and a shitload.

04-04-2008, 05:55 PM	#10
fliprayzin240sx SLINKY + ESCULATOR = Fun Times Join Date: Aug 2002 Location: Ass Crack of Japan Posts: 8,414 Trader Rating: (5) Rides Gallery: fliprayzin240sx	Color smoke? Black, blue-ish, white? __________________

04-04-2008, 06:37 PM	#11
lv240s14 Zilvia Member Join Date: Jan 2005 Location: Las vegas Age: 25 Posts: 279 Trader Rating: (0)	its white i am pretty sure its the coolant seal on the turbo...

04-04-2008, 08:24 PM	#12
GSXRJJordan [JEFE S14] Join Date: May 2006 Location: << 626 >> Posts: 7,177 Trader Rating: (14) Rides Gallery: GSXRJJordan	Easy way to test that ~ if you have SS lines, route the water feed to the water return, and put two M14x1.50 bolts into the turbo's water line ports. The turbos are oil-lubricated anyway, won't hurt just for a test. __________________ TEAM SUSPECT is alive. www.JordanInnovations.com*

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