Sr20det problem help - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

1nasty240sx · 05-19-2013, 02:34 PM

So my sr20det has white smoke coming out the exhaust when I drive it, but not at idle.
I did a compression test
cylinder 1 and 2 150psi
cylinder 3 and 4 140psi
the car runs strong with no hiccups
I did find oil on cylinder 4 spark plug no oil on the electrode side but the side that is in the engine.
There is no oil in my coolant
Anybody else have this happen to them with there sr20det?

steve shadows · 05-23-2013, 11:27 AM

Is it white bluish smoke? or White steamy smoke?

If it's bluish it could be your turbo oil seals. If it's white steamy smoke it's coolant getting into the combustion chamber typically. This will only show up in a radiator pressure test but more likely a better test is an actual leak down.

Hope this helps.

Mikester · 05-23-2013, 01:19 PM

Could be blow by... but it seems your compression numbers are okay.

Check the rubber gaskets around your spark plug wells; and ensure your valve cover is torqued at the correct value and peoper order per the FSM- this could be the culprit.

Also verify your PCV valve is functioning properly. It should rattle freely when you shake it. If it doesn't, you can immerse it in gasoline for 15-20min, then repeat until it rattles freely when shaken.

05-19-2013, 02:34 PM	#1
1nasty240sx Leaky Injector Join Date: Dec 2012 Location: South Central Pennsylvania Age: 32 Posts: 70 Trader Rating: (1) Feedback Score: 1 reviews	Sr20det problem help So my sr20det has white smoke coming out the exhaust when I drive it, but not at idle. I did a compression test cylinder 1 and 2 150psi cylinder 3 and 4 140psi the car runs strong with no hiccups I did find oil on cylinder 4 spark plug no oil on the electrode side but the side that is in the engine. There is no oil in my coolant Anybody else have this happen to them with there sr20det?

05-23-2013, 11:27 AM	#2
steve shadows Post Whore! Join Date: Aug 2003 Location: LA and OC Posts: 8,202 Trader Rating: (5) Feedback Score: 5 reviews	Is it white bluish smoke? or White steamy smoke? If it's bluish it could be your turbo oil seals. If it's white steamy smoke it's coolant getting into the combustion chamber typically. This will only show up in a radiator pressure test but more likely a better test is an actual leak down. Hope this helps. __________________ Like Me on FaceBook !

05-23-2013, 01:19 PM	#3
Mikester Nissanaholic! Join Date: Jun 2007 Location: Kathleen, GA Age: 52 Posts: 1,956 Trader Rating: (0) Feedback Score: 0 reviews	Could be blow by... but it seems your compression numbers are okay. Check the rubber gaskets around your spark plug wells; and ensure your valve cover is torqued at the correct value and peoper order per the FSM- this could be the culprit. Also verify your PCV valve is functioning properly. It should rattle freely when you shake it. If it doesn't, you can immerse it in gasoline for 15-20min, then repeat until it rattles freely when shaken. __________________