RUNAMUCK Posted February 19, 2010 Share Posted February 19, 2010 My rb20e powered shitfiro is a uses a bit more gas than it should, and I see the back of it is getting that dirty look like it's running a bit rich. The motor runs mint with no problems, and uses no oil at all. So how can I make it run a whisker leaner? With fool proof old cars, I could just put some smaller jets in it. But the fucker doesn't have a carb. EFI is a mystery to me. What can I do? Quote Link to comment Share on other sites More sharing options...
Unclejake Posted February 19, 2010 Share Posted February 19, 2010 A good airfilter and clean the throttle body Quote Link to comment Share on other sites More sharing options...
Burntrubber Posted February 19, 2010 Share Posted February 19, 2010 ^^what he said but with cleaning the injectors aswell they might be sticky. Quote Link to comment Share on other sites More sharing options...
plasticdash Posted February 19, 2010 Share Posted February 19, 2010 Also check your O2 sensor, is its stuffed your closed loop will be rich. Quote Link to comment Share on other sites More sharing options...
barf Posted March 1, 2010 Share Posted March 1, 2010 AFM sensor has major control of ECU's output so clean / check it too ? Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted March 2, 2010 Author Share Posted March 2, 2010 Also check your O2 sensor, is its stuffed your closed loop will be rich. Thats a possinblitiy. but the Commodore rb20e's didn't even use an O2 sensor.AFM sensor has major control of ECU's output so clean / check it too ? Yeah once I recover from my hellish weekend, I'm gonna have a crack at cleaning everything. Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted March 2, 2010 Share Posted March 2, 2010 If it has an AFM is it the type with a flap? Probably not being a nissan, but in a toyota you can split the cover off and move the little toothed wheel a notch to richen/lean out mixture. Quote Link to comment Share on other sites More sharing options...
SloNLo Posted March 2, 2010 Share Posted March 2, 2010 how much lean do you need? Quote Link to comment Share on other sites More sharing options...
FLAWLES Posted March 2, 2010 Share Posted March 2, 2010 ^^what he said but with cleaning the injectors aswell they might be sticky. ultrasonicly cleaning injectors for the win man, $15 to 20 an injector, it really helps Quote Link to comment Share on other sites More sharing options...
Requiemk Posted March 2, 2010 Share Posted March 2, 2010 check your timing clean afm filament with some form of brake clean reset ecu plug gap/new plugs Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted March 2, 2010 Author Share Posted March 2, 2010 ultrasonicly cleaning injectors for the win man, $15 to 20 an injector, it really helps Thats gonna cost half what I paid for the engine! I did score a cheap set of new spark plugs for a GC on this forum. Just need to get my A into G and fit them. Resetting the computer is a primo idea too. Quote Link to comment Share on other sites More sharing options...
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