sr20 lean idle and rich at boost - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

titopr06 · 01-15-2011, 08:47 AM

having a problem with my sr
after one good rip with the sr on the highway this started happening
my aem wideband is reading really lean at idle fromt 16 up to 18
and now when crusing it reads around 13 and when hitting boost it will read all the way to 10

before this happend idle was 14.7
and when at 10 pounds of boost it would read around 12

you guys have any ideas what could be causing this?

sometimes the car will turn off when i come to a complete stop which also started to happen when the air fuel ratios changed.

thanks for any input

R33E8 · 01-15-2011, 09:14 AM

Sounds like a boost leak.. try checking out your intake piping clamps and hoses..

SstennizZ · 08-22-2012, 11:52 PM

Whooo dusty old post.. But really need to know, did you find anything?
I have the exact same symptoms and did a check for boostleaks (at 0,7 bar on the system), but with no result..
Only leak I did find was on the intake side (between maf and turbo), but closing that only seemed to have made it worse..

titopr06 · 08-23-2012, 04:37 AM

^ it was actually a bad injector plug that was causing this problem for me.
make sure that they are all making good contact with the injectors.

01-15-2011, 08:47 AM	#1
titopr06 Zilvia FREAK! Join Date: May 2008 Location: puerto rico Posts: 1,061 Trader Rating: (48) Feedback Score: 48 reviews	sr20 lean idle and rich at boost having a problem with my sr after one good rip with the sr on the highway this started happening my aem wideband is reading really lean at idle fromt 16 up to 18 and now when crusing it reads around 13 and when hitting boost it will read all the way to 10 before this happend idle was 14.7 and when at 10 pounds of boost it would read around 12 you guys have any ideas what could be causing this? sometimes the car will turn off when i come to a complete stop which also started to happen when the air fuel ratios changed. thanks for any input __________________ http://titopr240.wordpress.com/

08-23-2012, 04:37 AM	#4
titopr06 Zilvia FREAK! Join Date: May 2008 Location: puerto rico Posts: 1,061 Trader Rating: (48) Feedback Score: 48 reviews	^ it was actually a bad injector plug that was causing this problem for me. make sure that they are all making good contact with the injectors. __________________ http://titopr240.wordpress.com/

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01-15-2011, 09:14 AM	#2
R33E8 Zilvia Addict Join Date: Jul 2006 Location: NJ Age: 23 Posts: 707 Trader Rating: (12) Feedback Score: 12 reviews	Sounds like a boost leak.. try checking out your intake piping clamps and hoses..

08-22-2012, 11:52 PM	#3
SstennizZ Join Date: Aug 2012 Location: The Netherlands Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	Whooo dusty old post.. But really need to know, did you find anything? I have the exact same symptoms and did a check for boostleaks (at 0,7 bar on the system), but with no result.. Only leak I did find was on the intake side (between maf and turbo), but closing that only seemed to have made it worse..