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

Go Back   Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum > General > Tech Talk > Engine Tech

Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series.

Thread Tools Display Modes
Old 08-03-2008, 09:09 PM   #1
Join Date: Aug 2008
Location: canada
Age: 33
Posts: 3
Trader Rating: (0)
mt055 is an unknown quantity at this point
Feedback Score: 0 reviews
240 runs rich at idle

alright, so i've been trying to solve this problem for weeks. when i start my car the afr is reading in the 11s. once i start driving it my car will bounce around go from rich spikes to leak spikes, and under boost it will lean out bad. so safe to say i dont drive until this problem is solved. my setup is relatively stock at the moment, just the blacktop sr20det. i've tried swapping in some 550cc injectors, z32 maf and a tuned ecu. and the exact same problem occurs, except that under boost it will be very rich, around 10.6. i've now put the stock setup back in to solve the problem first. i've replaced the following parts
fuel pump
fuel filter
knock sensor
temp sending unit
vacuum lines
i've tried swapping ecus too, same problem. my o rings are brand new so its not a leaky injector...and my afr gauge isn't wrong, i can smell the gas and see the black unburnt fuel come out of my tailpipe. i'm open to any ideas/suggestions, help please! oh and i've checked my codes on my ecu, it threw a 34 knock sensor, that was replaced and no its a 55, so no problems there.
mt055 is offline   Reply With Quote
Sponsored Links
Old 08-04-2008, 07:57 PM   #2
Zilvia Member
Join Date: Jul 2008
Location: fox lake
Age: 35
Posts: 192
Trader Rating: (0)
drftthatshit is on a distinguished road
Feedback Score: 0 reviews
what about your fuel pressure regulator hmmmmmmm?
drftthatshit is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -6. The time now is 02:13 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, vBulletin Solutions Inc.
Copyright ? 1998 - 2022, Zilvia.net